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Meier-Stephenson V, Drebot MA, Dimitrova K, DiQuinzio M, Fonseca K, Forrest D, Hatchette T, Morshed M, Patriquin G, Poliquin G, Saxinger L, Serhir B, Tellier R, Therrien C, Vrbova L, Wood H. Case Series of Jamestown Canyon Virus Infections with Neurologic Outcomes, Canada, 2011-2016. Emerg Infect Dis 2024; 30:874-881. [PMID: 38666581 PMCID: PMC11060468 DOI: 10.3201/eid3005.221258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024] Open
Abstract
Jamestown Canyon virus (JCV) is a mosquitoborne orthobunyavirus in the California serogroup that circulates throughout Canada and the United States. Most JCV exposures result in asymptomatic infection or a mild febrile illness, but JCV can also cause neurologic diseases, such as meningitis and encephalitis. We describe a case series of confirmed JCV-mediated neuroinvasive disease among persons from the provinces of British Columbia, Alberta, Quebec, and Nova Scotia, Canada, during 2011-2016. We highlight the case definitions, epidemiology, unique features and clinical manifestations, disease seasonality, and outcomes for those cases. Two of the patients (from Quebec and Nova Scotia) might have acquired JCV infections during travel to the northeastern region of the United States. This case series collectively demonstrates JCV's wide distribution and indicates the need for increased awareness of JCV as the underlying cause of meningitis/meningoencephalitis during mosquito season.
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Bergevin MD, Ng V, Sadeghieh T, Menzies P, Ludwig A, Mubareka S, Clow KM. A Scoping Review on the Epidemiology of Orthobunyaviruses in Canada, in the Context of Human, Wildlife, and Domestic Animal Host Species. Vector Borne Zoonotic Dis 2024; 24:249-264. [PMID: 38206763 DOI: 10.1089/vbz.2023.0109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2024] Open
Abstract
Background: Mosquito-borne orthobunyaviruses in Canada are a growing public health concern. Orthobunyaviral diseases are commonly underdiagnosed and in Canada, likely underreported as surveillance is passive. No vaccines or specific treatments exist for these disease agents. Further, climate change is facilitating habitat expansion for relevant reservoirs and vectors, and it is likely that the majority of the Canadian population is susceptible to these viruses. Methods: A scoping review was conducted to describe the current state of knowledge on orthobunyavirus epidemiology in Canada. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews guideline was used. Literature searches were conducted in six databases and in gray literature. The epidemiology of orthobunyaviruses was characterized for studies focusing on host species, including spatiotemporal patterns, risk factors, and climate change impact. Results: A total of 172 relevant studies were identified from 1734 citations from which 95 addressed host species, including humans, wildlife, and domestic animals including livestock. The orthobunyaviruses-Cache Valley virus (CVV), Jamestown Canyon virus (JCV), Snowshoe Hare virus (SHV), and La Crosse virus (LACV)-were identified, and prevalence was widespread across vertebrate species. CVV, JCV, and SHV were detected across Canada and the United States. LACV was reported only in the United States, predominantly the Mid-Atlantic and Appalachian regions. Disease varied by orthobunyavirus and was associated with age, environment, preexisting compromised immune systems, or livestock breeding schedule. Conclusion: Knowledge gaps included seroprevalence data in Canada, risk factor analyses, particularly for livestock, and disease projections in the context of climate change. Additional surveillance and mitigation strategies, especially accounting for climate change, are needed to guide future public health efforts to prevent orthobunyavirus exposure and disease.
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Affiliation(s)
- Michele D Bergevin
- Department of Population Medicine, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Victoria Ng
- Department of Population Medicine, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
- National Microbiology Laboratory Branch, Public Health Agency of Canada, Guelph, Ontario, Canada
| | - Tara Sadeghieh
- Health Promotion and Chronic Disease Prevention Branch, Public Health Agency of Canada, Ottawa, Ontario, Canada
| | - Paula Menzies
- Department of Population Medicine, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Antoinette Ludwig
- National Microbiology Laboratory Branch, Public Health Agency of Canada, St. Hyacinthe, Québec, Canada
| | - Samira Mubareka
- Sunnybrook Research Institute, Toronto, Ontario, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
| | - Katie M Clow
- Department of Population Medicine, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
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3
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Gnanaprakasam R, Wormser GP, Keller M. Background seropositivity to Jamestown Canyon virus can lead to diagnostic confusion. Diagn Microbiol Infect Dis 2024; 108:116161. [PMID: 38219377 DOI: 10.1016/j.diagmicrobio.2023.116161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/11/2023] [Accepted: 12/12/2023] [Indexed: 01/16/2024]
Abstract
Background seropositivity rates for specific antibodies to Jamestown Canyon Virus (JCV) can exceed 25 % in certain geographic areas in the United States. This can potentially lead to diagnostic confusion, as apparently illustrated by a patient from New Jersey with Powassan virus encephalitis, who also tested positive for antibodies to JCV.
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Affiliation(s)
- Rachel Gnanaprakasam
- Infectious Diseases, Westchester Medical Center, 100 Woods Road, Valhalla, New York, 10595 USA
| | - Gary P Wormser
- New York Medical College, 40 Sunshine Cottage Road, Valhalla, New York, 10595, USA
| | - Marina Keller
- Infectious Diseases, Westchester Medical Center, 100 Woods Road, Valhalla, New York, 10595 USA; New York Medical College, 40 Sunshine Cottage Road, Valhalla, New York, 10595, USA.
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4
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Shahab M, Aiman S, Alshammari A, Alasmari AF, Alharbi M, Khan A, Wei DQ, Zheng G. Immunoinformatics-based potential multi-peptide vaccine designing against Jamestown Canyon Virus (JCV) capable of eliciting cellular and humoral immune responses. Int J Biol Macromol 2023; 253:126678. [PMID: 37666399 DOI: 10.1016/j.ijbiomac.2023.126678] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/21/2023] [Accepted: 09/01/2023] [Indexed: 09/06/2023]
Abstract
Jamestown Canyon virus (JCV) is a deadly viral infection transmitted by various mosquito species. This mosquito-borne virus belongs to Bunyaviridae family, posing a high public health threat in the in tropical regions of the United States causing encephalitis in humans. Common symptoms of JCV include fever, headache, stiff neck, photophobia, nausea, vomiting, and seizures. Despite the availability of resources, there is currently no vaccine or drug available to combat JCV. The purpose of this study was to develop an epitope-based vaccine using immunoinformatics approaches. The vaccine aimed to be secure, efficient, bio-compatible, and capable of stimulating both innate and adaptive immune responses. In this study, the protein sequence of JCV was obtained from the NCBI database. Various bioinformatics methods, including toxicity evaluation, antigenicity testing, conservancy analysis, and allergenicity assessment were utilized to identify the most promising epitopes. Suitable linkers and adjuvant sequences were used in the design of vaccine construct. 50s ribosomal protein sequence was used as an adjuvant at the N-terminus of the construct. A total of 5 CTL, 5 HTL, and 5 linear B cell epitopes were selected based on non-allergenicity, immunological potential, and antigenicity scores to design a highly immunogenic multi-peptide vaccine construct. Strong interactions between the proposed vaccine and human immune receptors, i.e., TLR-2 and TLR-4, were revealed in a docking study using ClusPro software, suggesting their possible relevance in the immunological response to the vaccine. Immunological and physicochemical properties assessment ensured that the proposed vaccine demonstrated high immunogenicity, solubility and thermostability. Molecular dynamics simulations confirmed the strong binding affinities, as well as dynamic and structural stability of the proposed vaccine. Immune simulation suggest that the vaccine has the potential to effectively stimulate cellular and humoral immune responses to combat JCV infection. Experimental and clinical assays are required to validate the results of this study.
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Affiliation(s)
- Muhammad Shahab
- State key laboratories of chemical Resources Engineering Beijing University of chemical technology, Beijing 100029, China
| | - Sara Aiman
- Faculty of Environmental and Life Sciences, Beijing University of Technology, Beijing 100124, China
| | - Abdulrahman Alshammari
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Post Box 2455, Riyadh 11451, Saudi Arabia
| | - Abdullah F Alasmari
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Post Box 2455, Riyadh 11451, Saudi Arabia
| | - Metab Alharbi
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Post Box 2455, Riyadh 11451, Saudi Arabia
| | - Abbas Khan
- Deparment of Biostatistics and Bioinformatics, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, PR China; School of Medical and Life Sciences, Sunway University, Sunway City, Malaysia.
| | - Dong-Qing Wei
- Deparment of Biostatistics and Bioinformatics, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, PR China
| | - Guojun Zheng
- State key laboratories of chemical Resources Engineering Beijing University of chemical technology, Beijing 100029, China.
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5
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Ngo KA, Maffei JG, Koetzner CA, Zink SD, Payne AF, Backenson PB, White JL, Dupuis AP, Kramer LD, Ciota AT. Surveillance and Genetic Analysis of Jamestown Canyon Virus in New York State: 2001-2022. Am J Trop Med Hyg 2023; 109:1329-1332. [PMID: 37972332 DOI: 10.4269/ajtmh.23-0392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 08/03/2023] [Indexed: 11/19/2023] Open
Abstract
Jamestown Canyon virus (JCV) (Peribunyavirdae; Orthobunyavirus) is a mosquito-borne pathogen endemic to North America. The genome is composed of three segmented negative-sense RNA fragments designated as small, medium, and large. Jamestown Canyon virus is an emerging threat to public health, and infection in humans can cause severe neurological diseases, including encephalitis and meningitis. We report JCV mosquito surveillance data from 2001 to 2022 in New York state. Jamestown Canyon virus was detected in 12 mosquito species, with the greatest prevalence in Aedes canadensis and Anopheles punctipennis. Detection fluctuated annually, with the highest levels recorded in 2020. Overall, JCV infection rates were significantly greater from 2012 to 2022 compared with 2001 to 2011. Full-genome sequencing and phylogenetic analysis were also performed with representative JCV isolates collected from 2003 to 2022. These data demonstrated the circulation of numerous genetic variants, broad geographic separation, and the first identification of lineage B JCV in New York state in 2022.
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Affiliation(s)
- Kiet A Ngo
- New York State Department of Health, The Arbovirus Laboratory, Wadsworth Center, Slingerlands, New York
| | - Joseph G Maffei
- New York State Department of Health, The Arbovirus Laboratory, Wadsworth Center, Slingerlands, New York
| | - Cheri A Koetzner
- New York State Department of Health, The Arbovirus Laboratory, Wadsworth Center, Slingerlands, New York
| | - Steven D Zink
- New York State Department of Health, The Arbovirus Laboratory, Wadsworth Center, Slingerlands, New York
| | - Anne F Payne
- New York State Department of Health, The Arbovirus Laboratory, Wadsworth Center, Slingerlands, New York
| | - P Bryon Backenson
- New York State Department of Health, Bureau of Communicable Disease Control, Albany, New York
| | - Jennifer L White
- New York State Department of Health, Bureau of Communicable Disease Control, Albany, New York
| | - Alan P Dupuis
- New York State Department of Health, The Arbovirus Laboratory, Wadsworth Center, Slingerlands, New York
| | - Laura D Kramer
- New York State Department of Health, The Arbovirus Laboratory, Wadsworth Center, Slingerlands, New York
- Department of Biomedical Sciences, School of Public Health, State University of New York at Albany, Rensselaer, New York
| | - Alexander T Ciota
- New York State Department of Health, The Arbovirus Laboratory, Wadsworth Center, Slingerlands, New York
- Department of Biomedical Sciences, School of Public Health, State University of New York at Albany, Rensselaer, New York
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6
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Shepard JJ, Armstrong PM. Jamestown Canyon virus comes into view: understanding the threat from an underrecognized arbovirus. JOURNAL OF MEDICAL ENTOMOLOGY 2023; 60:1242-1251. [PMID: 37862091 DOI: 10.1093/jme/tjad069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 05/08/2023] [Accepted: 06/08/2023] [Indexed: 10/21/2023]
Abstract
This review examines the epidemiology, ecology, and evolution of Jamestown Canyon virus (JCV) and highlights new findings from the literature to better understand the virus, the vectors driving its transmission, and its emergence as an agent of arboviral disease. We also reanalyze data from the Connecticut Arbovirus Surveillance Program which represents the largest dataset on JCV infection in mosquitoes. JCV is a member of the California serogroup of the genus Orthobunyavirus, family Peribunyaviridae, and is found throughout much of temperate North America. This segmented, negative-sense RNA virus evolves predominately by genetic drift punctuated by infrequent episodes of genetic reassortment among novel strains. It frequently infects humans within affected communities and occasionally causes febrile illness and neuroinvasive disease in people. Reported human cases are relatively rare but are on the rise during the last 20 yr, particularly within the northcentral and northeastern United States. JCV appears to overwinter and reemerge each season by transovarial or vertical transmission involving univoltine Aedes (Diptera: Culicidae) species, specifically members of the Aedes communis (de Geer) and Ae. stimulans (Walker) Groups. The virus is further amplified in a mosquito-deer transmission cycle involving a diversity of mammalophilic mosquito species. Despite progress in our understanding of this virus, many aspects of the vector biology, virology, and human disease remain poorly understood. Remaining questions and future directions of research are discussed.
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Affiliation(s)
- John J Shepard
- Center for Vector Biology and Zoonotic Diseases, Department of Entomology, The Connecticut Agricultural Experiment Station, New Haven, CT 06511, USA
| | - Philip M Armstrong
- Center for Vector Biology and Zoonotic Diseases, Department of Entomology, The Connecticut Agricultural Experiment Station, New Haven, CT 06511, USA
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7
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Roussel L, Pham-Huy A, Yu AC, Venkateswaran S, Perez A, Bourdel G, Sun Y, Villavicencio ST, Bernier S, Li Y, Kazimerczak-Brunet M, Alattar R, Déry MA, Shapiro AJ, Penner J, Vinh DC. A Novel Homozygous Mutation Causing Complete TYK2 Deficiency, with Severe Respiratory Viral Infections, EBV-Driven Lymphoma, and Jamestown Canyon Viral Encephalitis. J Clin Immunol 2023; 43:2011-2021. [PMID: 37695435 DOI: 10.1007/s10875-023-01580-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 08/30/2023] [Indexed: 09/12/2023]
Abstract
Autosomal recessive tyrosine kinase 2 (TYK2) deficiency is characterized by susceptibility to mycobacterial and viral infections. Here, we report a 4-year-old female with severe respiratory viral infections, EBV-driven Burkitt-like lymphoma, and infection with the neurotropic Jamestown Canyon virus. A novel, homozygous c.745C > T (p.R249*) variant was found in TYK2. The deleterious effects of the TYK2 lesion were confirmed by immunoblotting; by evaluating functional responses to IFN-α/β, IL-10, and IL-23; and by assessing its scaffolding effect on the cell surface expression of cytokine receptor subunits. The effects of the mutation could not be pharmacologically circumvented in vitro, suggesting that alternative modalities, such as hematopoietic stem cell transplantation or gene therapy, may be needed. We characterize the first patient from Canada with a novel homozygous mutation in TYK2.
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Affiliation(s)
- Lucie Roussel
- Centre of Excellence for Genetic Research in Infection and Immunity, Research Institute, McGill University Health Centre, 1001 Decarie Blvd., Block E, Rm EM3-3230 (Mail Drop: EM3-3211), Montreal, QC, H4A 3J1, Canada
| | - Anne Pham-Huy
- Division of Infectious Diseases, Immunology and Allergy, Department of Pediatrics, Children's Hospital of Eastern Ontario, Ottawa, ON, Canada
| | - Andrea C Yu
- Division of Metabolics and Newborn Screening, Department of Pediatrics, Children's Hospital of Eastern Ontario, Ottawa, ON, Canada
| | - Sunita Venkateswaran
- Division of Neurology, Department of Pediatrics, Children's Hospital of Eastern Ontario, Ottawa, ON, Canada
| | - Anna Perez
- Centre of Excellence for Genetic Research in Infection and Immunity, Research Institute, McGill University Health Centre, 1001 Decarie Blvd., Block E, Rm EM3-3230 (Mail Drop: EM3-3211), Montreal, QC, H4A 3J1, Canada
| | - Guillaume Bourdel
- Centre of Excellence for Genetic Research in Infection and Immunity, Research Institute, McGill University Health Centre, 1001 Decarie Blvd., Block E, Rm EM3-3230 (Mail Drop: EM3-3211), Montreal, QC, H4A 3J1, Canada
| | - Yichun Sun
- Centre of Excellence for Genetic Research in Infection and Immunity, Research Institute, McGill University Health Centre, 1001 Decarie Blvd., Block E, Rm EM3-3230 (Mail Drop: EM3-3211), Montreal, QC, H4A 3J1, Canada
| | - Stephanya Tellez Villavicencio
- Centre of Excellence for Genetic Research in Infection and Immunity, Research Institute, McGill University Health Centre, 1001 Decarie Blvd., Block E, Rm EM3-3230 (Mail Drop: EM3-3211), Montreal, QC, H4A 3J1, Canada
| | - Stéphane Bernier
- Centre of Excellence for Genetic Research in Infection and Immunity, Research Institute, McGill University Health Centre, 1001 Decarie Blvd., Block E, Rm EM3-3230 (Mail Drop: EM3-3211), Montreal, QC, H4A 3J1, Canada
| | - Yongbiao Li
- Centre of Excellence for Genetic Research in Infection and Immunity, Research Institute, McGill University Health Centre, 1001 Decarie Blvd., Block E, Rm EM3-3230 (Mail Drop: EM3-3211), Montreal, QC, H4A 3J1, Canada
| | - Makayla Kazimerczak-Brunet
- Centre of Excellence for Genetic Research in Infection and Immunity, Research Institute, McGill University Health Centre, 1001 Decarie Blvd., Block E, Rm EM3-3230 (Mail Drop: EM3-3211), Montreal, QC, H4A 3J1, Canada
| | - Rolan Alattar
- Centre of Excellence for Genetic Research in Infection and Immunity, Research Institute, McGill University Health Centre, 1001 Decarie Blvd., Block E, Rm EM3-3230 (Mail Drop: EM3-3211), Montreal, QC, H4A 3J1, Canada
| | - Marc-André Déry
- Centre of Excellence for Genetic Research in Infection and Immunity, Research Institute, McGill University Health Centre, 1001 Decarie Blvd., Block E, Rm EM3-3230 (Mail Drop: EM3-3211), Montreal, QC, H4A 3J1, Canada
| | - Adam J Shapiro
- Division of Respirology, Department of Pediatrics, Montreal Children's Hospital, McGill University Health Centre, Montreal, QC, Canada
| | - Justin Penner
- Division of Infectious Diseases, Immunology and Allergy, Department of Pediatrics, Children's Hospital of Eastern Ontario, Ottawa, ON, Canada
- Department of Pediatrics, Qikiqtani General Hospital, Iqaluit, NT, Canada
| | - Donald C Vinh
- Centre of Excellence for Genetic Research in Infection and Immunity, Research Institute, McGill University Health Centre, 1001 Decarie Blvd., Block E, Rm EM3-3230 (Mail Drop: EM3-3211), Montreal, QC, H4A 3J1, Canada.
- Division of Infectious Diseases, Department of Medicine, McGill University Health Centre, Montreal, QC, Canada.
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Lau MJ, Dutra HLC, Jones MJ, McNulty BP, Diaz AM, Ware-Gilmore F, McGraw EA. Jamestown Canyon virus is transmissible by Aedes aegypti and is only moderately blocked by Wolbachia co-infection. PLoS Negl Trop Dis 2023; 17:e0011616. [PMID: 37669272 PMCID: PMC10503764 DOI: 10.1371/journal.pntd.0011616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 09/15/2023] [Accepted: 08/22/2023] [Indexed: 09/07/2023] Open
Abstract
Jamestown Canyon virus (JCV), a negative-sense arbovirus, is increasingly common in the upper Midwest of the USA. Transmitted by a range of mosquito genera, JCV's primary amplifying host is white-tailed deer. Aedes aegypti is responsible for transmitting various positive-sense viruses globally including dengue (DENV), Zika, chikungunya, and Yellow Fever. Ae. aegypti's distribution, once confined to the tropics, is expanding, in part due to climate change. Wolbachia, an insect endosymbiont, limits the replication of co-infecting viruses inside insects. The release and spread of the symbiont into Ae. aegypti populations have been effective in reducing transmission of DENV to humans, although the mechanism of Wolbachia-mediated viral blocking is still poorly understood. Here we explored JCV infection potential in Ae. aegypti, the nature of the vector's immune response, and interactions with Wolbachia infection. We show that Ae. aegypti is highly competent for JCV, which grows to high loads and rapidly reaches the saliva after an infectious blood meal. The mosquito immune system responds with strong induction of RNAi and JAK/STAT. Neither the direct effect of viral infection nor the energetic investment in immunity appears to affect mosquito longevity. Wolbachia infection blocked JCV only in the early stages of infection. Wolbachia-induced immunity was small compared to that of JCV, suggesting innate immune priming does not likely explain blocking. We propose two models to explain why Wolbachia's blocking of negative-sense viruses like JCV may be less than that of positive-sense viruses, relating to the slowdown of host protein synthesis and the triggering of interferon-like factors like Vago. In conclusion, we highlight the risk for increased human disease with the predicted future overlap of Ae. aegypti and JCV ranges. We suggest that with moderate Wolbachia-mediated blocking and distinct biology, negative-sense viruses represent a fruitful comparator model to other viruses for understanding blocking mechanisms in mosquitoes.
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Affiliation(s)
- Meng-Jia Lau
- Biology Department, The Pennsylvania State University, University Park, Pennsylvania, United States of America
- Center for Infectious Disease Dynamics, The Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, Pennsylvania, United States of America
| | - Heverton L. C. Dutra
- Biology Department, The Pennsylvania State University, University Park, Pennsylvania, United States of America
- Center for Infectious Disease Dynamics, The Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, Pennsylvania, United States of America
| | - Matthew J. Jones
- Biology Department, The Pennsylvania State University, University Park, Pennsylvania, United States of America
- Center for Infectious Disease Dynamics, The Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, Pennsylvania, United States of America
| | - Brianna P. McNulty
- Biology Department, The Pennsylvania State University, University Park, Pennsylvania, United States of America
- Center for Infectious Disease Dynamics, The Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, Pennsylvania, United States of America
| | - Anastacia M. Diaz
- Biology Department, The Pennsylvania State University, University Park, Pennsylvania, United States of America
- Center for Infectious Disease Dynamics, The Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, Pennsylvania, United States of America
| | - Fhallon Ware-Gilmore
- Biology Department, The Pennsylvania State University, University Park, Pennsylvania, United States of America
- Center for Infectious Disease Dynamics, The Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, Pennsylvania, United States of America
| | - Elizabeth A. McGraw
- Biology Department, The Pennsylvania State University, University Park, Pennsylvania, United States of America
- Center for Infectious Disease Dynamics, The Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, Pennsylvania, United States of America
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Poggi JD, Conery C, Mathewson A, Bolton D, Lovell R, Harrington LC, Notarangelo M. Jamestown Canyon virus (Bunyavirales: Peribunyaviridae) vector ecology in a focus of human transmission in New Hampshire, USA. JOURNAL OF MEDICAL ENTOMOLOGY 2023; 60:778-788. [PMID: 37071925 DOI: 10.1093/jme/tjad046] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 03/28/2023] [Accepted: 04/11/2023] [Indexed: 05/03/2023]
Abstract
Jamestown Canyon virus disease (JCVD) is a potentially neuroinvasive condition caused by the arbovirus Jamestown Canyon virus (JCV). Human cases of JCVD have increased in New Hampshire (NH) over the past decade, but vector surveillance is limited by funding and person power. We conducted mosquito surveillance with a focus on human JCVD cases south central NH during 2021. Routine surveillance with CDC miniature traps baited with CO2 (lights removed) was supplemented by a paired trapping design to test the collection efficiency of octenol, and New Jersey light traps. We performed virus testing, blood meal analysis, and compared morphological identification with DNA barcoding. Over 50,000 mosquitoes were collected representing 28 species. Twelve JCV-positive pools were derived from 6 species of more than 1,600 pools tested. Of those, Aedes excrucians/stimulans (MLE 4.95, Diptera: Culicidae, Walker, 1856, 1848), and Aedes sticticus (MLE 2.02, Meigen, 1838) had the highest JCV infection rates, and Aedes canadensis (MLE 0.13, Theobold, 1901) and Coquillettidia perturbans (0.10, Diptera: Culicidae, Walker, 1856) had the lowest infection rates. One hundred and fifty-one blood meals were matched to a vertebrate host. All putative vectors fed on the amplifying host of JCV, white-tailed deer (36-100% of bloodmeals). Putative vectors that fed on human hosts included Aedes excrucians (8%), Anopheles punctipennis (25%, Diptera: Culicidae, Say, 1823), and Coquillettidia perturbans (51%). CDC traps baited with CO2 were effective for collecting putative vectors. DNA barcoding enhanced morphological identifications of damaged specimens. We present the first ecological overview of JCV vectors in NH.
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Affiliation(s)
- Joseph D Poggi
- Northeast Regional Center for Excellence in Vector Borne Diseases; Cornell University, Department of Entomology, Ithaca, NY 14850, USA
| | - Colin Conery
- Northeast Regional Center for Excellence in Vector Borne Diseases; Cornell University, Department of Entomology, Ithaca, NY 14850, USA
| | - Abigail Mathewson
- New Hampshire Department of Health and Human Services, Concord, NH 03301, USA
| | - Denise Bolton
- New Hampshire Department of Health and Human Services, Concord, NH 03301, USA
| | - Rebecca Lovell
- New Hampshire Department of Health and Human Services, Concord, NH 03301, USA
| | - Laura C Harrington
- Northeast Regional Center for Excellence in Vector Borne Diseases; Cornell University, Department of Entomology, Ithaca, NY 14850, USA
| | - Marco Notarangelo
- New Hampshire Department of Health and Human Services, Concord, NH 03301, USA
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10
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Abstract
PURPOSE OF REVIEW The most common infectious etiologies of meningitis and encephalitis are viruses. In this review, we will discuss current epidemiology, prevention, diagnosis, and treatment of the most common causes of viral meningitis and encephalitis worldwide. RECENT FINDINGS Viral meningitis and encephalitis are increasingly diagnosed as molecular diagnostic techniques and serologies have become more readily available worldwide but recent progress in novel antiviral therapies remains limited. Emerging and re-emerging viruses that have caused endemic or worldwide outbreaks or epidemics are arboviruses (e.g., West Nile virus, Japanese encephalitis, Tick borne encephalitis, Dengue, Zika, Toscana), enteroviruses (e.g., Enterovirus 71, Enterovirus D68), Parechoviruses, respiratory viruses [e.g., severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), influenza, metapneumoviruses, measles, mumps], and herpes viruses [e.g., herpes simplex virus (HSV) type 1 (HSV-1), HSV-2, human herpes (HV) 6, varicella zoster virus (VZV)]. Future efforts should concentrate in increasing availability for those viruses with effective vaccination [e.g., Japanese encephalitis, Tick borne encephalitis, varicella zoster viruses, SARS-CoV-2, influenza], prompt initiation of those with encephalitis with treatable viruses (e.g., HSV-1, VZV), increasing the diagnostic yield by using novel techniques such as metagenomic sequencing and avoiding unnecessary antibiotics in those with viral meningitis or encephalitis. SUMMARY We review the current epidemiology, clinical presentation, diagnosis, and treatment of the common causative agents of viral meningitis and encephalitis worldwide.
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Affiliation(s)
- Vaishnavi Gundamraj
- Wisconsin Institute of Medical Research, University of Wisconsin-Madison, Madison, Wisconsin
| | - Rodrigo Hasbun
- Professor of Medicine, Section of Infectious Diseases, UT Health McGovern Medical School, Houston, Texas, USA
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Snyman J, Snyman LP, Buhler KJ, Villeneuve CA, Leighton PA, Jenkins EJ, Kumar A. California Serogroup Viruses in a Changing Canadian Arctic: A Review. Viruses 2023; 15:1242. [PMID: 37376542 DOI: 10.3390/v15061242] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 04/24/2023] [Accepted: 05/18/2023] [Indexed: 06/29/2023] Open
Abstract
The Arctic is warming at four times the global rate, changing the diversity, activity and distribution of vectors and associated pathogens. While the Arctic is not often considered a hotbed of vector-borne diseases, Jamestown Canyon virus (JCV) and Snowshoe Hare virus (SSHV) are mosquito-borne zoonotic viruses of the California serogroup endemic to the Canadian North. The viruses are maintained by transovarial transmission in vectors and circulate among vertebrate hosts, both of which are not well characterized in Arctic regions. While most human infections are subclinical or mild, serious cases occur, and both JCV and SSHV have recently been identified as leading causes of arbovirus-associated neurological diseases in North America. Consequently, both viruses are currently recognised as neglected and emerging viruses of public health concern. This review aims to summarise previous findings in the region regarding the enzootic transmission cycle of both viruses. We identify key gaps and approaches needed to critically evaluate, detect, and model the effects of climate change on these uniquely northern viruses. Based on limited data, we predict that (1) these northern adapted viruses will increase their range northwards, but not lose range at their southern limits, (2) undergo more rapid amplification and amplified transmission in endemic regions for longer vector-biting seasons, (3) take advantage of northward shifts of hosts and vectors, and (4) increase bite rates following an increase in the availability of breeding sites, along with phenological synchrony between the reproduction cycle of theorized reservoirs (such as caribou calving) and mosquito emergence.
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Affiliation(s)
- Jumari Snyman
- Department of Biochemistry, Microbiology and Immunology, College of Medicine, University of Saskatchewan, Saskatoon, SK S7N 5E5, Canada
| | - Louwrens P Snyman
- Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK S7N 5B4, Canada
| | - Kayla J Buhler
- Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK S7N 5B4, Canada
| | - Carol-Anne Villeneuve
- Research Group on Epidemiology of Zoonoses and Public Health (GREZOSP), Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC J2S 2M2, Canada
| | - Patrick A Leighton
- Research Group on Epidemiology of Zoonoses and Public Health (GREZOSP), Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC J2S 2M2, Canada
| | - Emily J Jenkins
- Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK S7N 5B4, Canada
| | - Anil Kumar
- Department of Biochemistry, Microbiology and Immunology, College of Medicine, University of Saskatchewan, Saskatoon, SK S7N 5E5, Canada
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Kapadia RK, Staples JE, Gill CM, Fischer M, Khan E, Laven JJ, Panella A, Velez JO, Hughes HR, Brault A, Pastula DM, Gould CV. Severe Arboviral Neuroinvasive Disease in Patients on Rituximab Therapy: A Review. Clin Infect Dis 2023; 76:1142-1148. [PMID: 36103602 PMCID: PMC10011006 DOI: 10.1093/cid/ciac766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 09/02/2022] [Accepted: 09/09/2022] [Indexed: 11/12/2022] Open
Abstract
With increasing use of rituximab and other B-cell depleting monoclonal antibodies for multiple indications, infectious complications are being recognized. We summarize clinical findings of patients on rituximab with arboviral diseases identified through literature review or consultation with the Centers for Disease Control and Prevention. We identified 21 patients on recent rituximab therapy who were diagnosed with an arboviral disease caused by West Nile, tick-borne encephalitis, eastern equine encephalitis, Cache Valley, Jamestown Canyon, and Powassan viruses. All reported patients had neuroinvasive disease. The diagnosis of arboviral infection required molecular testing in 20 (95%) patients. Median illness duration was 36 days (range, 12 days to 1 year), and 15/19 (79%) patients died from their illness. Patients on rituximab with arboviral disease can have a severe or prolonged course with an absence of serologic response. Patients should be counseled about mosquito and tick bite prevention when receiving rituximab and other B-cell depleting therapies.
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Affiliation(s)
- Ronak K Kapadia
- Neuro-Infectious Diseases Group, Department of Neurology and Division of Infectious Diseases, University of Colorado School of Medicine, Aurora, Colorado, USA
- Division of Neurology, Department of Clinical Neurosciences, Cummings School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - J Erin Staples
- Division of Vector-Borne Diseases, Centers for Disease Control and Prevention, Fort Collins, Colorado, USA
| | - Christine M Gill
- University of Iowa, Carver College of Medicine, Department of Neurology, Iowa City, Iowa, USA
| | - Marc Fischer
- Division of Vector-Borne Diseases, Centers for Disease Control and Prevention, Fort Collins, Colorado, USA
| | - Ezza Khan
- Hunterdon Infectious Disease Specialists, Flemington, New Jersey, USA
| | - Janeen J Laven
- Division of Vector-Borne Diseases, Centers for Disease Control and Prevention, Fort Collins, Colorado, USA
| | - Amanda Panella
- Division of Vector-Borne Diseases, Centers for Disease Control and Prevention, Fort Collins, Colorado, USA
| | - Jason O Velez
- Division of Vector-Borne Diseases, Centers for Disease Control and Prevention, Fort Collins, Colorado, USA
| | - Holly R Hughes
- Division of Vector-Borne Diseases, Centers for Disease Control and Prevention, Fort Collins, Colorado, USA
| | - Aaron Brault
- Division of Vector-Borne Diseases, Centers for Disease Control and Prevention, Fort Collins, Colorado, USA
| | - Daniel M Pastula
- Neuro-Infectious Diseases Group, Department of Neurology and Division of Infectious Diseases, University of Colorado School of Medicine, Aurora, Colorado, USA
- Division of Vector-Borne Diseases, Centers for Disease Control and Prevention, Fort Collins, Colorado, USA
- Department of Epidemiology, Colorado School of Public Health, Aurora, Colorado, USA
| | - Carolyn V Gould
- Division of Vector-Borne Diseases, Centers for Disease Control and Prevention, Fort Collins, Colorado, USA
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Maichak C, Hiney K, Loss SR, Talley JL, Noden BH. Effects of woody plant encroachment by eastern redcedar on mosquito communities in Oklahoma. JOURNAL OF VECTOR ECOLOGY : JOURNAL OF THE SOCIETY FOR VECTOR ECOLOGY 2022; 47:179-187. [PMID: 36314672 DOI: 10.52707/1081-1710-47.2.179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 06/27/2022] [Indexed: 06/16/2023]
Abstract
Woody plant encroachment into grasslands is occurring worldwide, affecting ecosystems in ways that likely influence mosquito-borne disease transmission. In the U.S. Great Plains, encroachment by eastern redcedar (Juniperus virginiana) (ERC) may be expanding conducive habitat for mosquitoes and their hosts, but few studies have evaluated associations between ERC encroachment and West Nile virus (WNV). To test the hypotheses that mosquito abundance and WNV-infected mosquitoes increase with increasing ERC cover, we collected mosquitoes in 32 sites in Oklahoma reflecting various ERC encroachment stages. We found support for our first hypothesis, as mean abundance of Aedes albopictus increased significantly with ERC cover. However, Psorophora columbiae and Anopheles quadrimaculatus abundance decreased with increasing ERC. There was no significant association with ERC for other mosquito species. We could not test our second hypothesis due to low WNV prevalence, but the only detected WNV-infected pool of mosquitoes (Cx. tarsalis) was collected in ERC. Our results suggest ERC encroachment increases abundance of at least one medically important mosquito species, but further research is needed to clarify how encroachment affects ecology of the entire WNV disease system through changes to vector and host communities, vector-host interactions, and thus disease transmission and prevalence. Understanding relationships between woody plant encroachment and the nidus of infection for mosquito-borne diseases will be crucial for targeting public health efforts, including land management activities that limit and/or eradicate woody plant encroachment, particularly in areas with high levels of disease risk.
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Affiliation(s)
- Courtney Maichak
- Department of Entomology and Plant Pathology, Oklahoma State University, Noble Research Center, Stillwater, OK 74078-3033
| | - Kris Hiney
- Department of Animal & Food Sciences, Oklahoma State University, Noble Research Center, Stillwater, OK 74078-3033
| | - Scott R Loss
- Department of Natural Resource Ecology & Management, Oklahoma State University, Stillwater, OK 74078-3033
| | - Justin L Talley
- Department of Entomology and Plant Pathology, Oklahoma State University, Noble Research Center, Stillwater, OK 74078-3033
| | - Bruce H Noden
- Department of Entomology and Plant Pathology, Oklahoma State University, Noble Research Center, Stillwater, OK 74078-3033,
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14
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Schneider EF, Robich RM, Elias SP, Lubelczyk CB, Cosenza DS, Smith RP. Jamestown Canyon Virus in Collected Mosquitoes, Maine, United States, 2017–2019. Emerg Infect Dis 2022; 28:2330-2333. [PMID: 36286231 PMCID: PMC9622264 DOI: 10.3201/eid2811.212382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
Jamestown Canyon virus (JCV) is a mosquito-borne arbovirus that circulates in North America. We detected JCV in 4 pools of mosquitoes collected from midcoastal Maine, USA, during 2017–2019. Phylogenetic analysis of a JCV sequence obtained from Aedes cantator mosquitoes clustered within clade A, which also circulates in Connecticut, USA.
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15
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Peach DAH, Matthews BJ. The Invasive Mosquitoes of Canada: An Entomological, Medical, and Veterinary Review. Am J Trop Med Hyg 2022; 107:231-244. [PMID: 35895394 PMCID: PMC9393454 DOI: 10.4269/ajtmh.21-0167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 05/03/2022] [Indexed: 11/07/2022] Open
Abstract
Several invasive mosquitoes have become established in Canada, including important pathogen vectors such as Aedes albopictus, Ae. japonicus, and Culex pipiens. Some species have been present for decades, while others are recent arrivals. Several species present new health concerns and may result in autochthonous seasonal outbreaks of pathogens, particularly in southern Canada, that were previously restricted to imported cases. This review provides an overview of current knowledge of the biological, medical, and veterinary perspectives of these invasive species and highlights the need for increased monitoring efforts and information sharing.
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Affiliation(s)
- Daniel A. H. Peach
- Department of Zoology, University of British Columbia, Vancouver, BC, Canada
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16
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Clarke LL, Mead DG, Ruder MG, Howerth EW, Stallknecht D. North American Arboviruses and White-Tailed Deer ( Odocoileus virginianus): Associated Diseases and Role in Transmission. Vector Borne Zoonotic Dis 2022; 22:425-442. [PMID: 35867036 DOI: 10.1089/vbz.2022.0005] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Background: Arboviral disease is of increasing concern to human and animal health professionals as emerging and re-emerging arboviruses are more frequently recognized. Wildlife species are known to play a role in the transmission and maintenance of arboviruses and infections can result in morbidity and mortality in wildlife hosts. Materials and Methods: In this review, we detail existing evidence of white-tailed deer (Odocoileus virginianus) as an important host to a diverse collection of arboviruses and evaluate the utility of this species as a resource to better understand the epidemiology of related viral diseases. Results: Relevant veterinary and zoonotic viral pathogens endemic to North America include epizootic hemorrhagic disease virus, bluetongue virus, orthobunyaviruses, vesicular stomatitis virus, Eastern equine encephalitis virus, West Nile virus, and Powassan virus. Exotic viral pathogens that may infect white-tailed deer are also identified with an emphasis on zoonotic disease risks. The utility of this species is attributed to the high degree of contact with humans and domestic livestock and evidence of preferential feeding by various insect vectors. Conclusions: There is mounting evidence that white-tailed deer are a useful, widely available source of information regarding arboviral circulation, and that surveillance and monitoring of deer populations would be of value to the understanding of certain viral transmission dynamics, with implications for improving human and domestic animal health.
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Affiliation(s)
- Lorelei L Clarke
- Wisconsin Veterinary Diagnostic Laboratory, Madison, Wisconsin, USA
| | - Daniel G Mead
- Southeastern Cooperative Wildlife Disease Study, Department of Population Health, College of Veterinary Medicine, University of Georgia, Athens, Georgia, USA
| | - Mark G Ruder
- Southeastern Cooperative Wildlife Disease Study, Department of Population Health, College of Veterinary Medicine, University of Georgia, Athens, Georgia, USA
| | - Elizabeth W Howerth
- Department of Pathology, College of Veterinary Medicine, University of Georgia, Athens, Georgia, USA
| | - David Stallknecht
- Southeastern Cooperative Wildlife Disease Study, Department of Population Health, College of Veterinary Medicine, University of Georgia, Athens, Georgia, USA
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17
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Dieme C, Kramer LD, Ciota AT. Vector competence of Anopheles quadrimaculatus and Aedes albopictus for genetically distinct Jamestown Canyon virus strains circulating in the Northeast United States. Parasit Vectors 2022; 15:226. [PMID: 35739573 PMCID: PMC9229909 DOI: 10.1186/s13071-022-05342-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 05/20/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Jamestown Canyon virus (JCV; Peribunyaviridae, Orthobunyavirus) is a mosquito-borne pathogen belonging to the California serogroup. The virus is endemic in North America and increasingly recognized as a public health concern. In this study, we determined the vector competence of Anopheles (An.) quadrimaculatus and Aedes (Ae.) albopictus for five JCV strains belonging to the two lineages circulating in the Northeast. METHODS An. quadrimaculatus and Ae. albopictus were fed blood meals containing two lineage A strains and three lineage B strains. Vector competence of both mosquito species was evaluated at 7- and 14-days post-feeding (dpf) by testing for virus presence in bodies, legs, and saliva. RESULTS Our results demonstrated that Ae. albopictus mosquitoes are a competent vector for both lineages, with similar transmission levels for all strains tested. Variable levels of infection (46-83%) and dissemination (17-38%) were measured in An. quadrimaculatus, yet no transmission was detected for the five JCV strains evaluated. CONCLUSIONS Our results demonstrate that establishment of Ae. albopictus in the Northeast could increase the risk of JCV but suggest An. quadrimaculatus are not a competent vector for JCV.
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Affiliation(s)
- Constentin Dieme
- Institut Pasteur de Guinée, Conakry, Guinea. .,Wadsworth Center, New York State Department of Health, Slingerlands, NY, USA.
| | - Laura D Kramer
- Wadsworth Center, New York State Department of Health, Slingerlands, NY, USA.,Department of Biomedical Sciences, School of Public Health, State University of New York at Albany, Albany, NY, USA
| | - Alexander T Ciota
- Wadsworth Center, New York State Department of Health, Slingerlands, NY, USA.,Department of Biomedical Sciences, School of Public Health, State University of New York at Albany, Albany, NY, USA
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18
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Laboratory Validation of a Real-Time RT-PCR Assay for the Detection of Jamestown Canyon Virus. Pathogens 2022; 11:pathogens11050536. [PMID: 35631056 PMCID: PMC9146205 DOI: 10.3390/pathogens11050536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 04/27/2022] [Accepted: 04/28/2022] [Indexed: 11/29/2022] Open
Abstract
The neuroinvasive disease caused by Jamestown Canyon virus (JCV) infection is rare. However, increasing incidence and widespread occurrence of the infection make JCV a growing public health concern. Presently, clinical diagnosis is achieved through serological testing, and mosquito pool surveillance requires virus isolation and identification. A rapid molecular detection test, such as real-time RT-PCR, for diagnosis and surveillance of JCV has not been widely utilized. To enhance testing and surveillance, here, we describe the development and validation of a real-time RT-PCR test for the detection of JCV RNA. Three primer and probe sets were evaluated for analytical sensitivity and specificity. One probe set, JCV132FAM, was found to be the most sensitive test detecting 7.2 genomic equivalents/µL. While less sensitive, a second probe set JCV231cFAM was the most specific test with limited detection of Keystone virus at high RNA loads. Taken together, these data indicate both probe sets can be utilized for a primary sensitive screening assay and a secondary specific confirmatory assay. While both primer and probe sets detected high viral loads of Keystone virus, these assays did not detect any virus in the California encephalitis virus clade, including negative detection of the medically important La Crosse virus (LACV) and snowshoe hare virus (SSHV). The real-time RT-PCR assay described herein could be utilized in diagnosis and surveillance in regions with co-circulation of JCV and LACV or SSHV to inform public health action.
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19
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Evans AB, Winkler CW, Peterson KE. Differences in neuroinvasion and protective innate immune pathways between encephalitic California Serogroup orthobunyaviruses. PLoS Pathog 2022; 18:e1010384. [PMID: 35245345 PMCID: PMC8926202 DOI: 10.1371/journal.ppat.1010384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 03/16/2022] [Accepted: 02/18/2022] [Indexed: 11/22/2022] Open
Abstract
The California serogroup (CSG) of Orthobunyaviruses comprises several members capable of causing neuroinvasive disease in humans, including La Crosse orthobunyavirus (LACV), Jamestown Canyon orthobunyavirus (JCV), and Inkoo orthobunyavirus (INKV). Despite being genetically and serologically closely related, their disease incidences and pathogenesis in humans and mice differ. We have previously shown that following intraperitoneal inoculation of weanling mice, LACV was highly pathogenic while JCV and INKV were not. To determine why there were differences, we examined the ability of these viruses to invade the CNS and compared the host innate immune responses that regulated viral pathogenesis. We found that LACV was always neuroinvasive, which correlated with its high level of neuroinvasive disease. Interestingly, JCV was not neuroinvasive in any mice, while INKV was neuroinvasive in most mice. The type I interferon (IFN) response was critical for protecting mice from both JCV and INKV disease, although in the periphery JCV induced little IFN expression, while INKV induced high IFN expression. Despite their differing neuroinvasive abilities, JCV and INKV shared innate signaling components required for protection. The presence of either cytoplasmic Rig-I-Like Receptor signaling or endosomal Toll-Like Receptor signaling was sufficient to protect mice from JCV or INKV, however, inhibition of both pathways rendered mice highly susceptible to neurological disease. Comparison of IFN and IFN-stimulated gene (ISG) responses to INKV in the brains of resistant wild type (WT) mice and susceptible immune knockout mice showed similar IFN responses in the brain, but WT mice had higher ISG responses, suggesting induction of key ISGs in the brain is critical for protection of mice from INKV. Overall, these results show that the CSG viruses differ in neuroinvasiveness, which can be independent from their neuropathogenicity. The type I IFN response was crucial for protecting mice from CSG virus-induced neurological disease, however, the exact correlates of protection appear to vary between CSG viruses.
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Affiliation(s)
- Alyssa B. Evans
- Laboratory of Persistent Viral Diseases, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, Montana, United States of America
| | - Clayton W. Winkler
- Laboratory of Persistent Viral Diseases, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, Montana, United States of America
| | - Karin E. Peterson
- Laboratory of Persistent Viral Diseases, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, Montana, United States of America
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20
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Ciccone EJ, Markmann AJ, Srinivas ML, Levinson KJ, Miller MB, van Duin D, Gay CL. Encephalitis Caused by Jamestown Canyon Virus in a Liver Transplant Patient, North Carolina, USA, 2017. Open Forum Infect Dis 2022; 9:ofac031. [PMID: 35187195 PMCID: PMC8849263 DOI: 10.1093/ofid/ofac031] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 01/27/2022] [Indexed: 11/14/2022] Open
Abstract
Abstract
We describe the first documented case of Jamestown Canyon Virus (JCV) in North Carolina, which occurred in a liver transplant patient who presented acutely with headache, aphasia, and confusion. This is also the first report of recovery from JCV encephalitis following treatment with intravenous immune globulin.
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Affiliation(s)
- Emily J Ciccone
- Division of Infectious Diseases, University of North Carolina School of Medicine, Chapel Hill, NC, USA
| | - Alena J Markmann
- Division of Infectious Diseases, University of North Carolina School of Medicine, Chapel Hill, NC, USA
| | - Megan L Srinivas
- Broadlawns Medical Center, Des Moines, Iowa, USA and Division of Infectious Diseases, University of North Carolina School of Medicine, Chapel Hill, NC, USA
| | - Kara J Levinson
- Tennessee Department of Health, Division of Laboratory Services, Nashville, TN, USA
| | - Melissa B Miller
- Clinical Microbiology Laboratory, University of North Carolina Hospitals, Chapel Hill, North Carolina, USA and Department of Pathology and Laboratory Medicine, University of North Carolina School of Medicine, Chapel Hill, NC, USA
| | - David van Duin
- Division of Infectious Diseases, University of North Carolina School of Medicine, Chapel Hill, NC, USA
| | - Cynthia L Gay
- Division of Infectious Diseases, University of North Carolina School of Medicine, Chapel Hill, NC, USA
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21
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Ber JL, Goddard J, Outlaw D. Survey of Mississippi Mosquito Blood Meals for Vertebrate Host Identification. JOURNAL OF THE AMERICAN MOSQUITO CONTROL ASSOCIATION 2021; 37:283-285. [PMID: 34817606 DOI: 10.2987/21-7004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Exploring particular mosquito and vertebrate relationships provide insight to potential transmission of several agents of disease. In the current study, the relationship between white-tailed deer (Odocoileus virginianus) and mosquitoes was explored by identifying blood meals within mosquitoes captured throughout Mississippi between June and September of 2013 and 2017. We captured 72 bloodfed mosquitoes between 2 collection years, with a majority of specimens identified as Culex erraticus or Psorophora mathesoni. Seventy-nine percent (26/33) of blood meals in Cx. erraticus originated from the white-tailed deer. These findings implicate mosquitoes may primarily be feeding on white-tailed deer in rural areas of Mississippi.
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Mincer J, Materniak S, Dimitrova K, Wood H, Iranpour M, Dibernardo A, Loomer C, Drebot MA, Lindsay LR, Webster D. Jamestown Canyon and snowshoe hare virus seroprevalence in New Brunswick. JOURNAL OF THE ASSOCIATION OF MEDICAL MICROBIOLOGY AND INFECTIOUS DISEASE CANADA = JOURNAL OFFICIEL DE L'ASSOCIATION POUR LA MICROBIOLOGIE MEDICALE ET L'INFECTIOLOGIE CANADA 2021; 6:213-220. [PMID: 36337757 PMCID: PMC9615463 DOI: 10.3138/jammi-2021-0009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Accepted: 06/06/2021] [Indexed: 06/16/2023]
Abstract
BACKGROUND Jamestown Canyon virus (JCV) and snowshoe hare virus (SSHV) are wide-ranging mosquito-borne arboviruses in the California serogroup viruses (CSGV) that are known to circulate in New Brunswick. Despite potential for debilitating central nervous system manifestations, the prevalence of human exposure to these viruses in New Brunswick is unknown. The goal of this study was to quantify rates of human exposure in New Brunswick to these neglected arboviruses. METHODS A retrospective, anonymized provincial serosurvey was performed using a stratified random sample of residual sera submitted between May 2015 and August 2016. To determine the seroprevalence of JCV and SSHV, competitive enzyme-linked immunosorbent assay-positive samples were confirmed positive using plaque-reduction neutralization testing (PRNT). RESULTS A total of 452 serum samples were screened. The seroprevalence of antibodies against CSGV was estimated to be 31.6% (95% CI 27.4% to 36.1%) with 143 positive samples. PRNT results indicated that most single virus exposures were due to JCV (38 of 143; 26.6%) rather than SSHV (3 of 143; 2.1%). The species of CSGV, to which the remaining 102 seropositive people were exposed, could not be precisely determined. CONCLUSIONS The prevalence of human exposure to CSGV is high but comparable to rates observed in other Atlantic Canadian jurisdictions. Studies such as this provide important baseline epidemiological data regarding the risk of exposure to these neglected arboviruses. SSHV and JCV should be considered in the differential diagnosis for undiagnosed febrile and neuroinvasive illness during mosquito season, particularly when testing for common aetiologies is negative or inconclusive.
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Affiliation(s)
- Jacqueline Mincer
- Dalhousie Medicine New Brunswick, Dalhousie University, Saint John, New Brunswick, Canada
| | | | - Kristina Dimitrova
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Manitoba, Canada
| | - Heidi Wood
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Manitoba, Canada
| | - Mahmood Iranpour
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Manitoba, Canada
| | - Antonia Dibernardo
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Manitoba, Canada
| | - Courtney Loomer
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Manitoba, Canada
| | - Michael A Drebot
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Manitoba, Canada
| | - L Robbin Lindsay
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Manitoba, Canada
| | - Duncan Webster
- Dalhousie Medicine New Brunswick, Dalhousie University, Saint John, New Brunswick, Canada
- Horizon Health Network, Saint John, New Brunswick, Canada
- Division of Infectious Diseases, Saint John Regional Hospital, Saint John, New Brunswick, Canada
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23
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Evans AB, Peterson KE. Cross reactivity of neutralizing antibodies to the encephalitic California Serogroup orthobunyaviruses varies by virus and genetic relatedness. Sci Rep 2021; 11:16424. [PMID: 34385513 PMCID: PMC8361150 DOI: 10.1038/s41598-021-95757-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 07/15/2021] [Indexed: 11/29/2022] Open
Abstract
The California Serogroup (CSG) of Orthobunyaviruses comprises several viruses capable of causing neuroinvasive disease in humans, including La Crosse (LACV), Snowshoe Hare (SSHV), Tahyna (TAHV), Jamestown Canyon (JCV), and Inkoo (INKV) viruses. Diagnosis of specific CSG viruses is complicated by the high degree of antibody cross-reactivity between them, with laboratory standards requiring a fourfold higher titer of neutralizating antibody (NAb) activity to positively identify the etiologic virus. To help elucidate NAb relationships between neuroinvasive CSG viruses, we directly compared the cross-reactivity of NAb between LACV, SSHV, TAHV, JCV, and INKV. Mice were inoculated with individual viruses and the NAb activity of plasma samples was compared by plaque reduction neutralization tests against all five viruses. Overall, the results from these studies show that the CSG viruses induced high levels of NAb against the inoculum virus, and differing amounts of cross-reactive NAb against heterologous viruses. LACV, SSHV, and INKV elicited the highest amount of cross-reactive NAb. Interestingly, a fourfold difference in NAb titer between the inoculum virus and the other CSG viruses was not always observed. Thus, NAb titers, which are the gold-standard for diagnosing the etiologic agent for viral encephalitis, may not clearly differentiate between different CSG viruses.
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Affiliation(s)
- Alyssa B Evans
- Laboratory of Persistent Viral Diseases, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, 59840, USA
| | - Karin E Peterson
- Laboratory of Persistent Viral Diseases, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, 59840, USA.
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Kato H, Takayama-Ito M, Satoh M, Kawahara M, Kitaura S, Yoshikawa T, Fukushi S, Nakajima N, Komeno T, Furuta Y, Saijo M. Favipiravir treatment prolongs the survival in a lethal mouse model intracerebrally inoculated with Jamestown Canyon virus. PLoS Negl Trop Dis 2021; 15:e0009553. [PMID: 34214091 PMCID: PMC8281987 DOI: 10.1371/journal.pntd.0009553] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 07/15/2021] [Accepted: 06/08/2021] [Indexed: 11/18/2022] Open
Abstract
Background Jamestown Canyon virus (JCV) is a mosquito-borne orthobunyavirus that causes acute febrile illness, meningitis, and meningoencephalitis, primarily in North American adults. Currently, there are no available vaccines or specific treatments against JCV infections. Methodology/Principal findings The antiviral efficacy of favipiravir (FPV) against JCV infection was evaluated in vitro and in vivo in comparison with that of ribavirin (RBV) and 2’-fluoro-2’-deoxycytidine (2’-FdC). The in vitro inhibitory effect of these drugs on JCV replication was evaluated in Vero and Neuro-2a (N2A) cells. The efficacy of FPV in the treatment of JCV infection in vivo was evaluated in C57BL/6J mice inoculated intracerebrally with JCV, as per the survival, viral titers in the brain, and viral RNA load in the blood. The 90% inhibitory concentrations (IC90) of FPV, RBV, and 2’-FdC were 41.0, 61.8, and 13.6 μM in Vero cells and 20.7, 25.8, and 8.8 μM in N2A cells, respectively. All mice infected with 1.0×104 TCID50 died or were sacrificed within 10 days post-infection (dpi) without treatment. However, mice treated with FPV for 5 days [initiated either 2 days prior to infection (−2 dpi–2 dpi) or on the day of infection (0 dpi–4 dpi)] survived significantly longer than control mice, administered with PBS (p = 0.025 and 0.011, respectively). Moreover, at 1 and 3 dpi, the virus titers in the brain were significantly lower in FPV-treated mice (0 dpi–4 dpi) versus PBS-treated mice (p = 0.002 for both 1 and 3 dpi). Conclusions/Significance Although the intracerebral inoculation route is thought to be a challenging way to evaluate drug efficacy, FPV inhibits the in vitro replication of JCV and prolongs the survival of mice intracerebrally inoculated with JCV. These results will enable the development of a specific antiviral treatment against JCV infections and establishment of an effective animal model. Jamestown Canyon virus (JCV) is a mosquito-borne virus (arbovirus) classified into the California serogroup. JCV is distributed widely throughout North America and is considered one of the potentially re-emerging viruses due to the recent spurt in JCV cases in the region. JCV infection often leads to an acute febrile illness, meningitis, and meningoencephalitis mainly among adults. Currently, no antiviral therapy against JCV is approved. In this study, we evaluated the antiviral efficacy of favipiravir (FPV), ribavirin (RBV), and 2’-fluoro-2’-deoxycytidine (2’-FdC) against JCV infection in cultured cells and mice. As a result, FPV, RBV, and 2’-FdC effectively inhibited JCV replication in Vero and Neuro-2a cells. Furthermore, FPV delayed the onset of neurological symptoms in mice intracerebrally inoculated with JCV. Notably, although most patients infected with JCV do not present severe disease, neuroinvasive cases are not rare and may result in residual neurological sequelae such as persisting cognitive deficits. Therefore, this study contributes to the development of a specific antiviral treatment for patients with JCV infection.
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Affiliation(s)
- Hirofumi Kato
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Mutsuyo Takayama-Ito
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
- * E-mail:
| | - Masaaki Satoh
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Madoka Kawahara
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Satoshi Kitaura
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
- Department of Internal Medicine, The University of Tokyo, Graduate School of Medicine, Tokyo, Japan
| | - Tomoki Yoshikawa
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Shuetsu Fukushi
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
| | | | | | | | - Masayuki Saijo
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
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25
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Kumar D, Hans A, Warsha F, Helmstetter N. Jamestown Canyon virus-mediated meningoencephalitis with unusual laboratory findings. BMJ Case Rep 2021; 14:14/7/e242014. [PMID: 34210700 DOI: 10.1136/bcr-2021-242014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Jamestown Canyon virus (JCV) is a mosquito-borne orthobunyavirus that causes an acute febrile illness, meningitis or meningoencephalitis. Human infections in the USA are rare. A 59-year-old man was admitted with fever, headache and hallucinations and required transfer to intensive care due to worsening agitation. Lumbar puncture was significant for neutrophilic pleocytosis, low glucose and high protein. Cerebral spinal fluid (CSF) bacterial cultures were negative, however, the CSF analysis via ELISA returned positive for JCV IgM. Plaque reduction neutralisation tests on a serum sample revealed IgM for JCV with titres of 1:160, which confirmed the diagnosis of JCV meningoencephalitis as the titres for other arboviruses were low. The patient improved significantly with supportive care. Our case highlights an atypical laboratory presentation of neutrophilic pleocytosis on CSF in a viral meningoencephalitis and draws attention to the potential cross-reactivity with other arboviruses.
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Affiliation(s)
- Dilpat Kumar
- Western Michigan University Homer Stryker MD School of Medicine, Kalamazoo, Michigan, USA
| | - Anmol Hans
- Western Michigan University Homer Stryker MD School of Medicine, Kalamazoo, Michigan, USA
| | - Fnu Warsha
- Interfaith Medical Center, Brooklyn, New York, USA
| | - Nicholas Helmstetter
- Western Michigan University Homer Stryker MD School of Medicine, Kalamazoo, Michigan, USA
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Coleman KJ, Chauhan L, Piquet AL, Tyler KL, Pastula DM. An Overview of Jamestown Canyon Virus Disease. Neurohospitalist 2021; 11:277-278. [PMID: 34163560 DOI: 10.1177/19418744211005948] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Kyle J Coleman
- Neuro-Infectious Diseases Group, Division of Infectious Diseases, Department of Neurology, University of Colorado School of Medicine, Aurora, CO, USA
| | - Lakshmi Chauhan
- Neuro-Infectious Diseases Group, Division of Infectious Diseases, Department of Neurology, University of Colorado School of Medicine, Aurora, CO, USA
| | - Amanda L Piquet
- Neuro-Infectious Diseases Group, Division of Infectious Diseases, Department of Neurology, University of Colorado School of Medicine, Aurora, CO, USA
| | - Kenneth L Tyler
- Neuro-Infectious Diseases Group, Division of Infectious Diseases, Department of Neurology, University of Colorado School of Medicine, Aurora, CO, USA.,Department of Immunology-Microbiology, University of Colorado School of Medicine, Aurora, CO, USA
| | - Daniel M Pastula
- Neuro-Infectious Diseases Group, Division of Infectious Diseases, Department of Neurology, University of Colorado School of Medicine, Aurora, CO, USA.,Department of Epidemiology, Colorado School of Public Health, Aurora, CO, USA
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27
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Solomon IH, Ganesh VS, Yu G, Deng XD, Wilson MR, Miller S, Milligan TA, Mukerji SS, Mathewson A, Linxweiler J, Morse D, Ritter JM, Staples JE, Hughes H, Gould CV, Sabeti PC, Chiu CY, Piantadosi A. Fatal Case of Chronic Jamestown Canyon Virus Encephalitis Diagnosed by Metagenomic Sequencing in Patient Receiving Rituximab. Emerg Infect Dis 2021; 27. [PMID: 33261720 PMCID: PMC7774567 DOI: 10.3201/eid2701.203448] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
A 56-year-old man receiving rituximab who had months of neurologic symptoms was found to have Jamestown Canyon virus in cerebrospinal fluid by clinical metagenomic sequencing. The patient died, and postmortem examination revealed extensive neuropathologic abnormalities. Deep sequencing enabled detailed characterization of viral genomes from the cerebrospinal fluid, cerebellum, and cerebral cortex.
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Dupuis AP, Prusinski MA, Russell A, O'Connor C, Maffei JG, Oliver J, Howard JJ, Sherwood JA, Tober K, Rochlin I, Cucura M, Backenson B, Kramer LD. Serologic Survey of Mosquito-Borne Viruses in Hunter-Harvested White-Tailed Deer ( Odocoileus virginianus), New York State. Am J Trop Med Hyg 2020; 104:593-603. [PMID: 33350367 DOI: 10.4269/ajtmh.20-1090] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 10/13/2020] [Indexed: 11/07/2022] Open
Abstract
Sera from white-tailed deer (WTD, Odocoileus virginianus) hunter-harvested throughout New York State (NYS), 2007-2015, were tested by plaque reduction neutralization for antibodies against nine mosquito-borne viruses from the families Peribunyaviridae, Flaviviridae, and Togaviridae. Overall, 76.1% (373/490) of sampled WTD were seropositive against at least one virus, and 38.8% were exposed to multiple viruses. The seropositivity rate in adult WTD (78.0%) was significantly greater (P < 0.0001) than that in fawns (47.7%). Neutralizing antibodies against California serogroup viruses were most common in WTD sampled across all regions (67.1%), followed by the Bunyamwera serogroup (BUN) (37.6%). Jamestown Canyon and Cache Valley orthobunyaviruses were responsible for most California and BUN infections, respectively. Seroprevalence rates to West Nile virus were higher in samples originating from Long Island (LI) (19.0%) than in those originating from the central (7.3%), western (5.0%), and Hudson Valley (4.4%) regions of NYS. Antibodies to Eastern equine encephalitis virus were seen primarily in WTD from central NYS (5.1%), where annual enzootic activity occurs, but low rates were documented in western NYS (1.4%) and LI (1.7%). Low rates of Potosi and LaCrosse orthobunyavirus, and Highlands J virus antibodies were detected over the course of this investigation. St. Louis encephalitis virus (or a closely related virus) antibodies were detected in samples collected from central and western NYS, suggesting local virus transmission despite a lack of evidence from routine mosquito surveillance. Serologic results demonstrate the value of WTD in NYS as an indicator of arbovirus distribution and recent transmission on a relatively fine spatial scale.
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Affiliation(s)
- Alan P Dupuis
- New York State Department of Health, The Arbovirus Laboratory, Wadsworth Center, Slingerlands, New York
| | - Melissa A Prusinski
- New York State Department of Health, Bureau of Communicable Disease Control, Albany, New York
| | - Alexis Russell
- New York State Department of Health, Bureau of Communicable Disease Control, Albany, New York
| | - Collin O'Connor
- New York State Department of Health, Bureau of Communicable Disease Control, Albany, New York
| | - Joseph G Maffei
- New York State Department of Health, The Arbovirus Laboratory, Wadsworth Center, Slingerlands, New York
| | - JoAnne Oliver
- New York State Department of Health, Central New York Regional Office, Syracuse, New York
| | - John J Howard
- New York State Department of Health, Central New York Regional Office, Syracuse, New York
| | - James A Sherwood
- New York State Department of Health, Central New York Regional Office, Syracuse, New York
| | - Keith Tober
- New York State Department of Health, Bureau of Communicable Disease Control, Albany, New York
| | - Ilia Rochlin
- Division of Vector Control, Suffolk County Department of Public Works, Yaphank, New York
| | - Moses Cucura
- Division of Vector Control, Suffolk County Department of Public Works, Yaphank, New York
| | - Bryon Backenson
- New York State Department of Health, Bureau of Communicable Disease Control, Albany, New York
| | - Laura D Kramer
- Department of Biomedical Sciences, State University of New York at Albany School of Public Health, Albany, New York.,New York State Department of Health, The Arbovirus Laboratory, Wadsworth Center, Slingerlands, New York
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Kinsella CM, Paras ML, Smole S, Mehta S, Ganesh V, Chen LH, McQuillen DP, Shah R, Chan J, Osborne M, Hennigan S, Halpern-Smith F, Brown CM, Sabeti P, Piantadosi A. Jamestown Canyon virus in Massachusetts: clinical case series and vector screening. Emerg Microbes Infect 2020; 9:903-912. [PMID: 32302268 PMCID: PMC7273174 DOI: 10.1080/22221751.2020.1756697] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Jamestown Canyon virus (JCV) is a neuroinvasive arbovirus that is found throughout North America and increasingly recognized as a public health concern. From 2004 to 2012, an average of 1.7 confirmed cases were reported annually in the United States, whereas from 2013 to 2018 this figure increased over seventeen-fold to 29.2 cases per year. The rising number of reported human infections highlights the need for better understanding of the clinical manifestations and epidemiology of JCV. Here, we describe nine patients diagnosed with neuroinvasive JCV infection in Massachusetts from 2013, the year of the first reported case in the state, to 2017. Because current diagnostic testing relies on serology, which is complicated by cross-reactivity with related orthobunyaviruses and can be negative in immunosuppressed patients, we developed and evaluated an RT-qPCR assay for detection of JCV RNA. We tested this on the available archived serum from two patients, but did not detect viral RNA. JCV is transmitted by multiple mosquito species and its primary vector in Massachusetts is unknown, so we additionally applied the RT-qPCR assay and confirmatory RNA sequencing to assess JCV prevalence in a vector candidate, Ochlerotatus canadensis. We identified JCV in 0.6% of mosquito pools, a similar prevalence to neighboring Connecticut. We assembled the first Massachusetts JCV genome directly from a mosquito sample, finding high identity to JCV isolates collected over a 60-year period. Further studies are needed to reconcile the low vector prevalence and low rate of viral evolutionary change with the increasing number of reported cases.
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Affiliation(s)
- Cormac M Kinsella
- Infectious Disease and Microbiome Program, Broad Institute of MIT and Harvard, Cambridge, MA, USA.,Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA, USA
| | - Molly L Paras
- Department of Medicine, Division of Infectious Diseases, Massachusetts General Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
| | - Sandra Smole
- Bureau of Infectious Disease and Laboratory Sciences, Massachusetts Department of Public Health, Jamaica Plain, MA, USA
| | - Samar Mehta
- Infectious Disease and Microbiome Program, Broad Institute of MIT and Harvard, Cambridge, MA, USA.,Department of Medicine, Division of Infectious Diseases, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Vijay Ganesh
- Department of Neurology, Massachusetts General Hospital, Boston, MA, USA
| | - Lin H Chen
- Harvard Medical School, Boston, MA, USA.,Department of Medicine, Division of Infectious Diseases and Travel Medicine, Beth Israel Lahey Health, Mount Auburn Hospital, Cambridge, MA, USA
| | - Daniel P McQuillen
- Department of Infectious Disease, Beth Israel Lahey Health, Lahey Hospital and Medical Center, Burlington, MA, USA.,Department of Medicine, Division of Geographic Medicine and Infectious Diseases, Tufts University School of Medicine, Boston, MA, USA
| | - Ruta Shah
- Harvard Medical School, Boston, MA, USA.,Department of Medicine, Division of Infectious Diseases, North Shore Medical Center, Salem, MA, USA
| | - Justin Chan
- Department of Medicine, Division of Infectious Diseases, Massachusetts General Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
| | - Matthew Osborne
- Bureau of Infectious Disease and Laboratory Sciences, Massachusetts Department of Public Health, Jamaica Plain, MA, USA
| | - Scott Hennigan
- Bureau of Infectious Disease and Laboratory Sciences, Massachusetts Department of Public Health, Jamaica Plain, MA, USA
| | - Frederic Halpern-Smith
- Bureau of Infectious Disease and Laboratory Sciences, Massachusetts Department of Public Health, Jamaica Plain, MA, USA
| | - Catherine M Brown
- Bureau of Infectious Disease and Laboratory Sciences, Massachusetts Department of Public Health, Jamaica Plain, MA, USA
| | - Pardis Sabeti
- Infectious Disease and Microbiome Program, Broad Institute of MIT and Harvard, Cambridge, MA, USA.,Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA, USA.,Department of Immunology and Infectious Disease, Harvard T.H. Chan School of Public Health, Cambridge, MA, USA.,Howard Hughes Medical Institute, Chevy Chase, MD, USA
| | - Anne Piantadosi
- Infectious Disease and Microbiome Program, Broad Institute of MIT and Harvard, Cambridge, MA, USA.,Department of Medicine, Division of Infectious Diseases, Massachusetts General Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
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30
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Abstract
Domestic arthropod-borne viruses (arboviruses) are single-stranded RNA viruses, the most common of which include the mosquito-borne West Nile virus, St. Louis encephalitis virus, La Crosse virus, Jamestown Canyon virus, and eastern equine encephalitis virus, as well as the tick-borne Powassan virus. Previously considered rare infections, they have been detected with increasing frequency over the past 2 decades. Here, we present an overview of the domestic arboviruses listed above and describe the modalities employed to diagnose infection. Global arboviruses, including dengue virus, Zika virus, and chikungunya virus, have also been increasingly detected in the United States within the last 5 years but are not a focus of this minireview. Typical manifestations of arbovirus infection range from no symptoms, to meningitis or encephalitis, to death. Serologies are the standard means of diagnosis in the laboratory, since most viruses have a short period of replication, limiting the utility of molecular tests. The interpretation of serologies is confounded by antibody cross-reactivity with viruses belonging to the same serogroup and by long-lasting antibodies from prior infections. Next-generation assays have improved performance by increasing antigen purity, selecting optimal epitopes, and improving interpretive algorithms, but challenges remain. Due to cross-reactivity, a positive first-line serology test requires confirmation by either a plaque reduction neutralization test or detection of seroconversion or a 4-fold rise in virus-specific IgM or IgG antibody titers from acute- and convalescent-phase sera. The use of molecular diagnostics, such as reverse transcription PCR or unbiased metagenomic sequencing, is limited to the minority of patients who present with ongoing viremia or central nervous system replication. With the continued expansion of vector range, the diagnosis of domestic arboviruses will become an increasingly important task for generalists and specialists alike.
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Kato H, Satoh M, Kawahara M, Kitaura S, Yoshikawa T, Fukushi S, Dimitrova K, Wood H, Saijo M, Takayama-Ito M. Seroprevalence of Jamestown Canyon virus in the Japanese general population. BMC Infect Dis 2020; 20:790. [PMID: 33096994 PMCID: PMC7585186 DOI: 10.1186/s12879-020-05517-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 10/16/2020] [Indexed: 11/10/2022] Open
Abstract
Background Jamestown Canyon virus (JCV) is a mosquito-borne orthobunyavirus that causes acute febrile illness, meningitis, and meningoencephalitis, mainly among adults. JCV is widely distributed in North America and the number of JCV cases in the U.S. has increased in recent years. Therefore, the central nervous system disease caused by JCV can be considered a potentially re-emerging viral disease. However, the seroprevalence of JCV is unknown in Japan. The purpose of this study is to evaluate the seroprevalence of JCV in the Japanese population. Methods We used an IgG enzyme-linked immunosorbent assay (IgG-ELISA) with JCV-infected cell-lysates and/or a neutralizing (NT) antibody assay. The cut-off value of IgG-ELISA was determined using IgG-ELISA to analyze serum specimens from 37 healthy Japanese donors. IgG-ELISA was validated by assessing its sensitivity and specificity, using 38 human serum samples previously tested for the presence or absence of antibodies against JCV and snowshoe hare virus (SSHV), in an in-house NT antibody assay conducted by the Public Health Agency of Canada. The seroepidemiological study was performed using IgG-ELISA and NT antibody assay to analyze 246 human serum samples from the serum bank of the National Institute of Infectious Diseases (NIID) in Japan. Results The cut-off value of IgG-ELISA was determined at 0.20, based on the mean (− 0.075) and standard deviation (0.092) values using Japanese donors’ sera. The sensitivity and the specificity of IgG-ELISA determined using 25 JCV-positive and 4 JCV-negative serum samples were 96 and 100%, respectively. Analysis of the 246 Japanese serum samples revealed that no specimen showed a higher value than the cut-off value of IgG-ELISA, and no sample tested positive by the NT antibody assay. Conclusions Our results showed that JCV is not circulating significantly in Japan. To the best of our knowledge, this is the first report to demonstrate the seroprevalence of JCV in the general population in Japan.
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Affiliation(s)
- Hirofumi Kato
- Department of Virology 1, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan
| | - Masaaki Satoh
- Department of Virology 1, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan
| | - Madoka Kawahara
- Department of Virology 1, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan
| | - Satoshi Kitaura
- Department of Virology 1, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan
| | - Tomoki Yoshikawa
- Department of Virology 1, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan
| | - Shuetsu Fukushi
- Department of Virology 1, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan
| | - Kristina Dimitrova
- Zoonotic Diseases and Special Pathogens Division, Public Health Agency of Canada, 1015 Arlington Street Winnipeg, Winnipeg, Manitoba, R3E 3R2, Canada
| | - Heidi Wood
- Zoonotic Diseases and Special Pathogens Division, Public Health Agency of Canada, 1015 Arlington Street Winnipeg, Winnipeg, Manitoba, R3E 3R2, Canada
| | - Masayuki Saijo
- Department of Virology 1, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan
| | - Mutsuyo Takayama-Ito
- Department of Virology 1, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo, 162-8640, Japan.
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Edridge AWD, van der Hoek L. Emerging orthobunyaviruses associated with CNS disease. PLoS Negl Trop Dis 2020; 14:e0008856. [PMID: 33112863 PMCID: PMC7652332 DOI: 10.1371/journal.pntd.0008856] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 11/09/2020] [Accepted: 10/07/2020] [Indexed: 01/08/2023] Open
Abstract
The Orthobunyavirus genus comprises a wide range of arthropod-borne viruses which are prevalent worldwide and commonly associated with central nervous system (CNS) disease in humans and other vertebrates. Several orthobunyaviruses have recently emerged and increasingly more will likely do so in the future. Despite this large number, an overview of these viruses is currently lacking, making it challenging to determine importance from a One Health perspective. Causality is a key feature of determining importance, yet classical tools are unfit to evaluate the causality of orthobunyaviral CNS disease. Therefore, we aimed to provide an overview of orthobunyaviral CNS disease in vertebrates and objectify the causality strength of each virus. In total, we identified 27 orthobunyaviruses described in literature to be associated with CNS disease. Ten were associated with disease in multiple host species of which seven included humans. Seven viruses were associated with both congenital and postnatal CNS disease. CNS disease-associated orthobunyaviruses were spread across all known Orthobunyavirus serogroups by phylogenetic analyses. Taken together, these results indicate that orthobunyaviruses may have a common tendency to infect the CNS of vertebrates. Next, we developed six tailor-made causality indicators and evaluated the causality strength of each of the identified orthobunyaviruses. Nine viruses had a 'strong' causality score and were deemed causal. Eight had a 'moderate' and ten a 'weak' causality score. Notably, there was a lack of case-control studies, which was only available for one virus. We, therefore, stress the importance of proper case-control studies as a fundamental aspect of proving causality. This comprehensible overview can be used to identify orthobunyaviruses which may be considered causal, reveal research gaps for viruses with moderate to low causality scores, and provide a framework to evaluate the causality of orthobunyaviruses that may newly emerge in the future.
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Affiliation(s)
- Arthur Wouter Dante Edridge
- Laboratory of Experimental Virology, Department of Medical Microbiology and Infection Prevention, Amsterdam institute for Infection & Immunity, Amsterdam UMC, University of Amsterdam, the Netherlands
- Global Child Health Group, Emma Children’s Hospital, Amsterdam UMC, University of Amsterdam, the Netherlands
| | - Lia van der Hoek
- Laboratory of Experimental Virology, Department of Medical Microbiology and Infection Prevention, Amsterdam institute for Infection & Immunity, Amsterdam UMC, University of Amsterdam, the Netherlands
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Shete A, Yadav PD, Gokhale M, Jain R, Pardeshi P, Majumdar T, Mourya DT. Proactive preparedness for Cat Que virus: An Orthobunyavirus existing in India. Indian J Med Res 2020; 151:571-577. [PMID: 32719230 PMCID: PMC7602937 DOI: 10.4103/ijmr.ijmr_1195_18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Background & objectives: The presence of Cat Que virus (CQV) in Culex mosquitoes and pigs has been reported in China and Vietnam. Due to the spread of similar species of the Culex mosquitoes in India, there is a need to understand the replication kinetics of this virus in mosquito models. As a part of preparedness and to identify the presence of this CQV in humans and swine, this study was carried out to develop diagnostic tests. Methods: Serological and molecular diagnostic assays were developed for testing the mosquito population, human and swine serum samples. In this line, RNA-dependent RNA polymerase (L), glycoprotein (M) and nucleocapsid (S) genes-based reverse transcription-polymerase chain reaction (RT-PCR) assays were developed for CQV. Real-time RT-PCR was used for screening of retrospectively collected human serum samples (n=1020) with acute febrile illness during 2014-2017. Simultaneously, an in-house anti-CQV swine and human IgG ELISAs were also developed to detect anti-CQV IgG antibody. Human serum samples (n=883) with post-onset of disease (POD) >4 days and swine serum samples (n=459) were tested for the presence of anti-CQV IgG antibodies. CQV NIV 612,045 isolate was used for susceptibility and replication kinetics experiment using three different species of mosquitoes to understand its behaviour in Indian mosquitoes. Results: All human serum samples (n=1020) screened for the presence of CQV using real-time RT-PCR were found to be negative. Anti-CQV IgG antibody positivity was recorded in two of 883 human serum samples tested. Virus susceptibility experiments indicated that three species of mosquito, namely Aedes aegypti, Culex quinquefasciatus and Cx. tritaeniorhynchus supported multiplication of CQV by intrathoracic as well as artificial membrane/oral feeding routes. Interpretation & conclusions: Anti-CQV IgG antibody positivity in human serum samples tested and the replication capability of CQV in mosquitoes indicated a possible disease causing potential of CQV in Indian scenario. Screening of more human and swine serum samples using these assays is required as a proactive measure for understanding the prevalence of this neglected tropical virus.
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Affiliation(s)
- Anita Shete
- Maximum Containment Laboratory, Pune, Maharashtra, India
| | - Pragya D Yadav
- Maximum Containment Laboratory, Pune, Maharashtra, India
| | | | - Rajlaxmi Jain
- Maximum Containment Laboratory, Pune, Maharashtra, India
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Kading RC, Cohnstaedt LW, Fall K, Hamer GL. Emergence of Arboviruses in the United States: The Boom and Bust of Funding, Innovation, and Capacity. Trop Med Infect Dis 2020; 5:E96. [PMID: 32517268 PMCID: PMC7345222 DOI: 10.3390/tropicalmed5020096] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/01/2020] [Accepted: 06/04/2020] [Indexed: 11/16/2022] Open
Abstract
Mosquito-borne viruses will continue to emerge and generate a significant public health burden around the globe. Here, we provide a longitudinal perspective on how the emergence of mosquito-borne viruses in the Americas has triggered reactionary funding by sponsored agencies, stimulating a number of publications, innovative development of traps, and augmented capacity. We discuss the return on investment (ROI) from the oscillation in federal funding that influences demand for surveillance and control traps and leads to innovation and research productivity.
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Affiliation(s)
- Rebekah C. Kading
- Department of Microbiology, Colorado State University, Immunology and Pathology, Fort Collins, Colorado, CO 80523, USA
| | - Lee W. Cohnstaedt
- United States Department of Agriculture, Arthropod-borne Animal Diseases Research Unit, Agricultural Research Service, Manhattan, Kansas, KS 66502, USA;
| | - Ken Fall
- BioQuip Products, Rancho Dominguez, California, CA 90220, USA;
| | - Gabriel L. Hamer
- Department of Entomology, College of Agriculture and Life Sciences, Texas A&M University, College Station, Texas, TX 77843, USA;
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35
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Evans AB, Winkler CW, Peterson KE. Differences in Neuropathogenesis of Encephalitic California Serogroup Viruses. Emerg Infect Dis 2019; 25:728-738. [PMID: 30882310 PMCID: PMC6433036 DOI: 10.3201/eid2504.181016] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The California serogroup of orthobunyaviruses comprises a group of mosquitoborne viruses, including La Crosse (LACV), snowshoe hare (SSHV), Tahyna (TAHV), Jamestown Canyon (JCV), and Inkoo (INKV) viruses, that cause neurologic disease in humans of differing ages with varying incidences. To determine how the pathogenesis of these viruses differs, we compared their ability to induce disease in mice and replicate and induce cell death in vitro. In mice, LACV, TAHV, and SSHV induced neurologic disease after intraperitoneal and intranasal inoculation, and JCV induced disease only after intranasal inoculation. INKV rarely induced disease, which correlated with less viral antigen in the brain than the other viruses. In vitro, all viruses replicated to high titers; however, LACV, SSHV, and TAHV induced high cell death, whereas JCV and INKV did not. Results demonstrated that CSG viruses differ in neuropathogenesis in vitro and in vivo, which correlates with the differences in pathogenesis reported in humans.
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MESH Headings
- Age Factors
- Animals
- Cells, Cultured
- Cluster Analysis
- Disease Models, Animal
- Encephalitis Virus, California/classification
- Encephalitis Virus, California/genetics
- Encephalitis Virus, California/pathogenicity
- Encephalitis, California/diagnosis
- Encephalitis, California/epidemiology
- Encephalitis, California/virology
- Genes, Viral
- Geography, Medical
- Global Health
- Humans
- Incidence
- Mice
- Public Health Surveillance
- Sequence Analysis, DNA
- Serogroup
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36
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Matkovic E, Hoang Johnson DK, Staples JE, Mora-Pinzon MC, Elbadawi LI, Osborn RA, Warshauer DM, Wegner MV, Davis JP. Enhanced Arboviral Surveillance to Increase Detection of Jamestown Canyon Virus Infections, Wisconsin, 2011-2016. Am J Trop Med Hyg 2019; 100:445-451. [PMID: 30526745 PMCID: PMC6367605 DOI: 10.4269/ajtmh.18-0575] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Jamestown Canyon virus (JCV), a mosquito-borne Orthobunyavirus (within the California serogroup), can cause severe neuroinvasive disease. According to national data during 2000–2013, 42% of the 31 documented JCV disease cases in the United States were detected in residents from Wisconsin. The Wisconsin Division of Public Health enhanced JCV surveillance by implementing routine use of JCV-specific immunoglobulin M (IgM) antibody testing followed by confirmatory JCV-specific plaque reduction neutralization testing on all patients with suspected cases of arboviral infection who had tests positive for arboviral immunoglobin at commercial laboratories. During 2011–2016, of the 287 Wisconsin specimens tested on the Arbovirus IgM Antibody Panel, 30 JCV cases were identified (26 confirmed and four probable). Twenty-seven (90%) JCV cases were detected after 2013. Among all cases, 17 (56%) were male and the median age was 54 years (range: 10–84 years). Fifteen patients had neuroinvasive disease, including meningitis (n = 9) and meningoencephalitis (n = 6). Although historically considered rare, the relatively high rate (0.12 cases/100,000 population) of diagnosis of JCV infections among Wisconsin residents during 2013–2016 compared with that in previous years suggests occurrence is widespread throughout Wisconsin and historically may have been under-recognized. This study aims to raise awareness of JCV infection for differential diagnosis among the arboviral diseases. Improved and timely diagnosis of arboviral disease is important in that it will provide more information regarding emerging infections and promote preventive measures to avoid mosquito-borne exposure and infection among residents of and visitors to affected areas.
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Affiliation(s)
- Eduard Matkovic
- Division of Public Health, Wisconsin Department of Health Services, Madison, Wisconsin.,Department of Pathology and Laboratory Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Diep K Hoang Johnson
- Division of Public Health, Wisconsin Department of Health Services, Madison, Wisconsin
| | - J Erin Staples
- Arboviral Diseases Branch, Division of Vector-Borne Diseases, Centers for Disease Control and Prevention, Fort Collins, Colorado
| | - Maria C Mora-Pinzon
- Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin.,Division of Public Health, Wisconsin Department of Health Services, Madison, Wisconsin
| | - Lina I Elbadawi
- Career Epidemiology Field Officer, Office of Public Health Preparedness and Response, Centers for Disease Control and Prevention, Atlanta, Georgia.,Division of Public Health, Wisconsin Department of Health Services, Madison, Wisconsin
| | - Rebecca A Osborn
- Division of Public Health, Wisconsin Department of Health Services, Madison, Wisconsin
| | | | - Mark V Wegner
- Division of Public Health, Wisconsin Department of Health Services, Madison, Wisconsin
| | - Jeffrey P Davis
- Division of Public Health, Wisconsin Department of Health Services, Madison, Wisconsin
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37
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Askar W, Menaria P, Thohan V, Brummitt CF. Jamestown Canyon virus encephalitis in a heart transplant patient. Transpl Infect Dis 2019; 22:e13210. [PMID: 31713971 DOI: 10.1111/tid.13210] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 10/02/2019] [Accepted: 10/27/2019] [Indexed: 11/30/2022]
Abstract
Jamestown Canyon virus (JtCV) is an arbovirus and a member of the California serogroup. To our knowledge, all the cases of JtCV have been reported in immunocompetent patients since it was first detected in 1997. We report a case of JtCV encephalitis in a solid organ transplant patient. A 48-year-old woman from Wisconsin had multiple hospital admissions for symptoms of progressive confusion, visual hallucinations, and inability to perform self-care. Initial evaluation was significant for lymphocytes in cerebrospinal fluid (CSF), and multiple infectious and metabolic causes were excluded. Further investigation found JtCV IgM in serum, and CSF. The patient's clinical course was compatible with JtCV encephalitis, and she was treated with ribavirin in addition to reduction of her immunosuppressive medications. She showed gradual and significant improvement in her mental and functional status. JtCV can cause a variety of symptoms that range from a flu-like syndrome to encephalitis. There have been an increased number of reported cases in recent years which is attributed to increased physician awareness and the availability of laboratory testing. Optimal treatment is still not known.
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Affiliation(s)
- Wajih Askar
- Department of Internal Medicine Residency, Aurora Healthcare, Milwaukee, Wisconsin
| | - Puneet Menaria
- Department of Hospital Medicine, Aurora St. Luke's Medical Center, Aurora Healthcare, Milwaukee, Wisconsin
| | - Vinay Thohan
- Department of Advanced Heart Failure Therapies, Mission Health System, Asheville, North Carolina
| | - Charles F Brummitt
- Department of Infectious Diseases, Aurora Healthcare, Milwaukee, Wisconsin
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38
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McDonald E, Martin SW, Landry K, Gould CV, Lehman J, Fischer M, Lindsey NP. West Nile virus and other domestic nationally notifiable arboviral diseases — United States, 2018. Am J Transplant 2019. [DOI: 10.1111/ajt.15589] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Emily McDonald
- Arboviral Diseases Branch Division of Vector‐Borne Diseases National Center for Emerging and Zoonotic Infectious Diseases CDC, Atlanta, Georgia
- Epidemic Intelligence Service CDC Atlanta Georgia
| | - Stacey W. Martin
- Arboviral Diseases Branch Division of Vector‐Borne Diseases National Center for Emerging and Zoonotic Infectious Diseases CDC, Atlanta, Georgia
| | - Kimberly Landry
- Arboviral Diseases Branch Division of Vector‐Borne Diseases National Center for Emerging and Zoonotic Infectious Diseases CDC, Atlanta, Georgia
| | - Carolyn V. Gould
- Arboviral Diseases Branch Division of Vector‐Borne Diseases National Center for Emerging and Zoonotic Infectious Diseases CDC, Atlanta, Georgia
| | - Jennifer Lehman
- Arboviral Diseases Branch Division of Vector‐Borne Diseases National Center for Emerging and Zoonotic Infectious Diseases CDC, Atlanta, Georgia
| | - Marc Fischer
- Arboviral Diseases Branch Division of Vector‐Borne Diseases National Center for Emerging and Zoonotic Infectious Diseases CDC, Atlanta, Georgia
| | - Nicole P. Lindsey
- Arboviral Diseases Branch Division of Vector‐Borne Diseases National Center for Emerging and Zoonotic Infectious Diseases CDC, Atlanta, Georgia
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Throw out the Map: Neuropathogenesis of the Globally Expanding California Serogroup of Orthobunyaviruses. Viruses 2019; 11:v11090794. [PMID: 31470541 PMCID: PMC6784171 DOI: 10.3390/v11090794] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 08/23/2019] [Accepted: 08/26/2019] [Indexed: 12/19/2022] Open
Abstract
The California serogroup (CSG) comprises 18 serologically and genetically related mosquito-borne orthobunyaviruses. Of these viruses, at least seven have been shown to cause neurological disease in humans, including the leading cause of pediatric arboviral encephalitis in the USA, La Crosse virus. Despite the disease burden from these viruses, much is still unknown about the CSG viruses. This review summarizes our current knowledge of the CSG viruses, including human disease and the mechanisms of neuropathogenesis.
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40
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McDonald E, Martin SW, Landry K, Gould CV, Lehman J, Fischer M, Lindsey NP. West Nile Virus and Other Domestic Nationally Notifiable Arboviral Diseases - United States, 2018. MMWR-MORBIDITY AND MORTALITY WEEKLY REPORT 2019; 68:673-678. [PMID: 31393865 PMCID: PMC6687196 DOI: 10.15585/mmwr.mm6831a1] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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41
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Ludwig A, Zheng H, Vrbova L, Drebot MA, Iranpour M, Lindsay LR. Increased risk of endemic mosquito-borne diseases in Canada due to climate change. CANADA COMMUNICABLE DISEASE REPORT = RELEVE DES MALADIES TRANSMISSIBLES AU CANADA 2019; 45:91-97. [PMID: 31285698 PMCID: PMC6587694 DOI: 10.14745/ccdr.v45i04a03] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
There are currently over 80 species of mosquito endemic in Canada-although only a few of these carry pathogens that can cause disease in humans. West Nile virus, Eastern equine encephalitis virus and the California serogroup viruses (including the Jamestown Canyon and snowshoe hare viruses) are mosquito-borne viruses that have been found to cause human infections in North America, including in Canada. Over the last 20 years, the incidence of most of these endemic mosquito-borne diseases (MBD) has increased approximately 10% in Canada, due in large part to climate change. It is anticipated that both the mosquito lifecycle and virus transmission patterns will be affected by climate change, resulting in an increase in both the range and local abundance of several important mosquito species. Laboratory studies and mathematical modelling suggest that increased ambient temperatures, changes in precipitation and extreme weather events associated with climate change will likely continue to drive mosquito vector and MBD range expansion, increasing the duration of transmission seasons and leading to MBD-related epidemics. Furthermore, Canada's endemic MBDs have complex transmission cycles, involving multiple reservoir hosts (birds and mammals), multiple pathogens and multiple mosquito species-all of which may be sensitive to climate and other environmental changes, and making forecasting of potential emerging trends difficult. These expected climate-induced changes in mosquitoes and MBDs underline the need for continued (and expanded) surveillance and research to ensure timely and accurate evaluation of the risks to the public health of Canadians.
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Affiliation(s)
- A Ludwig
- National Microbiology Laboratory, Public Health Agency of Canada, St. Hyacinthe, QC
| | - H Zheng
- Center for Food-borne, Environmental and Zoonotic Infectious Diseases, Public Health Agency of Canada, Ottawa, ON
| | - L Vrbova
- Center for Food-borne and Environmental & Zoonotic Infectious Diseases, Public Health Agency of Canada, Toronto, ON
| | - MA Drebot
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, MN
| | - M Iranpour
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, MN
| | - LR Lindsay
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, MN
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42
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Wright WF, Pinto CN, Palisoc K, Baghli S. Viral (aseptic) meningitis: A review. J Neurol Sci 2019; 398:176-183. [PMID: 30731305 DOI: 10.1016/j.jns.2019.01.050] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 01/28/2019] [Accepted: 01/30/2019] [Indexed: 11/17/2022]
Abstract
Viral meningitis is an inflammation of the meninges associated with acute onset of meningeal symptoms and fever, pleocytosis of the cerebrospinal fluid, and no growth on routine bacterial culture. It is sometimes associated with viral encephalitis and meningoencephalitis. Viruses reach the central nervous system (CNS) hematogenously or in a retrograde manner from nerve endings. The viral etiology varies according to age and country. Molecular diagnostics technology has helped improve the rate of pathogen detection reducing unnecessary antibiotic use and length of hospitalization. Most of the viral infections detailed in this article have no specific treatment other than supportive care. Many of the viruses discussed are preventable by vaccination and proper skin protection against transmitting vectors.
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Affiliation(s)
- William F Wright
- Division of Infectious Diseases, Department of Medicine, University of Pittsburgh Medical Center, Pinnacle, United States.
| | - Casey N Pinto
- Division of Infectious Diseases, Department of Medicine, University of Pittsburgh Medical Center, Pinnacle, United States; Department of Public Health Sciences, The Pennsylvania State University, United States.
| | - Kathryn Palisoc
- Division of Hospital Medicine, Department of Medicine, University of Pittsburgh Medical Center, Pinnacle, United States
| | - Salim Baghli
- Division of Hospital Medicine, Department of Medicine, University of Pittsburgh Medical Center, Pinnacle, United States
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43
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Curren EJ, Lehman J, Kolsin J, Walker WL, Martin SW, Staples JE, Hills SL, Gould CV, Rabe IB, Fischer M, Lindsey NP. West Nile Virus and Other Nationally Notifiable Arboviral Diseases - United States, 2017. MMWR-MORBIDITY AND MORTALITY WEEKLY REPORT 2018; 67:1137-1142. [PMID: 30335737 PMCID: PMC6193690 DOI: 10.15585/mmwr.mm6741a1] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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44
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45
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Rocheleau JP, Michel P, Lindsay LR, Drebot M, Dibernardo A, Ogden NH, Fortin A, Arsenault J. Risk factors associated with seropositivity to California serogroup viruses in humans and pet dogs, Quebec, Canada. Epidemiol Infect 2018; 146:1167-1176. [PMID: 29716671 PMCID: PMC9134364 DOI: 10.1017/s0950268818001000] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Revised: 03/19/2018] [Accepted: 03/30/2018] [Indexed: 11/07/2022] Open
Abstract
Jamestown Canyon and snowshoe hare viruses are two emerging human pathogens associated with cases of neuroinvasive disease in North America. This study aimed to identify environmental and individual risk factors for seropositivity to these arboviruses in humans and pet dogs from Québec, Canada, 2012-2014. In humans, areas with moderate densities of white-tailed deer (Odocoileus virginianus) were associated with higher odds of seropositivity compared with areas with low densities of white-tailed deer (OR 2.50, P = 0.009) and odds of seropositivity were higher in males than in females (OR 2.03, P = 0.016). Among humans reporting more than 10 mosquito bites weekly, the odds of being seropositive were 4.44 times higher (P = 0.004) for people living in hardwood forested areas. Exposure to areas with coniferous forests was identified as the main environmental risk factor for seroconversion in dogs (OR 2.39, P = 0.04). These findings may help target further public health research, diagnostic and surveillance efforts in Canada.
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Affiliation(s)
- J. P. Rocheleau
- Groupe de recherche en épidémiologie des zoonoses et santé publique, Faculté de médecine vétérinaire, Université de Montréal, Saint-Hyacinthe, Québec, Canada
| | - P. Michel
- Groupe de recherche en épidémiologie des zoonoses et santé publique, Faculté de médecine vétérinaire, Université de Montréal, Saint-Hyacinthe, Québec, Canada
- Office of the Chief Science Officer, Public Health Agency of Canada, Ottawa, Ontario, Canada
| | - L. R. Lindsay
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Manitoba, Canada
| | - M. Drebot
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Manitoba, Canada
| | - A. Dibernardo
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Manitoba, Canada
| | - N. H. Ogden
- Groupe de recherche en épidémiologie des zoonoses et santé publique, Faculté de médecine vétérinaire, Université de Montréal, Saint-Hyacinthe, Québec, Canada
- National Microbiology Laboratory, Public Health Agency of Canada, Saint-Hyacinthe, Québec, Canada
| | - A. Fortin
- Institut national de santé publique, Québec, Québec, Canada
| | - J. Arsenault
- Groupe de recherche en épidémiologie des zoonoses et santé publique, Faculté de médecine vétérinaire, Université de Montréal, Saint-Hyacinthe, Québec, Canada
- Département de pathologie et microbiologie vétérinaire, Faculté de médecine vétérinaire, Université de Montréal, Saint-Hyacinthe, Québec, Canada
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46
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Vosoughi R, Walkty A, Drebot MA, Kadkhoda K. Jamestown Canyon virus meningoencephalitis mimicking migraine with aura in a resident of Manitoba. CMAJ 2018; 190:E262-E264. [PMID: 29507158 PMCID: PMC5837875 DOI: 10.1503/cmaj.170940] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Affiliation(s)
- Reza Vosoughi
- Department of Neurology (Vosoughi), Department of Medical Microbiology & Infectious Diseases (Walkty, Drebot, Kadkhoda) and Department of Immunology (Kadkhoda), Max Rady College of Medicine, University of Manitoba; Diagnostic Services Manitoba (Walkty); National Microbiology Laboratory (Drebot); Cadham Provincial Laboratory (Kadkhoda), Winnipeg, Man
| | - Andrew Walkty
- Department of Neurology (Vosoughi), Department of Medical Microbiology & Infectious Diseases (Walkty, Drebot, Kadkhoda) and Department of Immunology (Kadkhoda), Max Rady College of Medicine, University of Manitoba; Diagnostic Services Manitoba (Walkty); National Microbiology Laboratory (Drebot); Cadham Provincial Laboratory (Kadkhoda), Winnipeg, Man.
| | - Michael A Drebot
- Department of Neurology (Vosoughi), Department of Medical Microbiology & Infectious Diseases (Walkty, Drebot, Kadkhoda) and Department of Immunology (Kadkhoda), Max Rady College of Medicine, University of Manitoba; Diagnostic Services Manitoba (Walkty); National Microbiology Laboratory (Drebot); Cadham Provincial Laboratory (Kadkhoda), Winnipeg, Man
| | - Kamran Kadkhoda
- Department of Neurology (Vosoughi), Department of Medical Microbiology & Infectious Diseases (Walkty, Drebot, Kadkhoda) and Department of Immunology (Kadkhoda), Max Rady College of Medicine, University of Manitoba; Diagnostic Services Manitoba (Walkty); National Microbiology Laboratory (Drebot); Cadham Provincial Laboratory (Kadkhoda), Winnipeg, Man
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47
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Adams DA, Thomas KR, Jajosky RA, Foster L, Baroi G, Sharp P, Onweh DH, Schley AW, Anderson WJ. Summary of Notifiable Infectious Diseases and Conditions - United States, 2015. MMWR-MORBIDITY AND MORTALITY WEEKLY REPORT 2017; 64:1-143. [PMID: 28796757 DOI: 10.15585/mmwr.mm6453a1] [Citation(s) in RCA: 108] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The Summary of Notifiable Infectious Diseases and Conditions - United States, 2015 (hereafter referred to as the summary) contains the official statistics, in tabular and graphical form, for the reported occurrence of nationally notifiable infectious diseases and conditions in the United States for 2015. Unless otherwise noted, data are final totals for 2015 reported as of June 30, 2016. These statistics are collected and compiled from reports sent by U.S. state and territories, New York City, and District of Columbia health departments to the National Notifiable Diseases Surveillance System (NNDSS), which is operated by CDC in collaboration with the Council of State and Territorial Epidemiologists (CSTE). This summary is available at https://www.cdc.gov/MMWR/MMWR_nd/index.html. This site also includes summary publications from previous years.
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Affiliation(s)
- Deborah A Adams
- Division of Health Informatics and Surveillance, Office of Public Health Scientific Services, CDC
| | - Kimberly R Thomas
- Division of Health Informatics and Surveillance, Office of Public Health Scientific Services, CDC
| | - Ruth Ann Jajosky
- Division of Health Informatics and Surveillance, Office of Public Health Scientific Services, CDC
| | - Loretta Foster
- Division of Health Informatics and Surveillance, Office of Public Health Scientific Services, CDC
| | - Gitangali Baroi
- Division of Health Informatics and Surveillance, Office of Public Health Scientific Services, CDC
| | - Pearl Sharp
- Division of Health Informatics and Surveillance, Office of Public Health Scientific Services, CDC
| | - Diana H Onweh
- Division of Health Informatics and Surveillance, Office of Public Health Scientific Services, CDC
| | - Alan W Schley
- Division of Health Informatics and Surveillance, Office of Public Health Scientific Services, CDC
| | - Willie J Anderson
- Division of Health Informatics and Surveillance, Office of Public Health Scientific Services, CDC
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48
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Krow-Lucal E, Lindsey NP, Lehman J, Fischer M, Staples JE. West Nile Virus and Other Nationally Notifiable Arboviral Diseases - United States, 2015. MMWR-MORBIDITY AND MORTALITY WEEKLY REPORT 2017; 66:51-55. [PMID: 28103209 PMCID: PMC5657660 DOI: 10.15585/mmwr.mm6602a3] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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49
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White MK, Wollebo HS, David Beckham J, Tyler KL, Khalili K. Zika virus: An emergent neuropathological agent. Ann Neurol 2016; 80:479-89. [PMID: 27464346 PMCID: PMC5086418 DOI: 10.1002/ana.24748] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 07/25/2016] [Accepted: 07/25/2016] [Indexed: 01/07/2023]
Abstract
The emergence of Zika virus in the Americas has followed a pattern that is familiar from earlier epidemics of other viruses, where a new disease is introduced into a human population and then spreads rapidly with important public health consequences. In the case of Zika virus, an accumulating body of recent evidence implicates the virus in the etiology of serious pathologies of the human nervous system, that is, the occurrence of microcephaly in neonates and Guillain-Barré syndrome in adults. Zika virus is an arbovirus (arthropod-borne virus) and a member of the family Flaviviridae, genus Flavivirus. Zika virions are enveloped and icosahedral, and contain a nonsegmented, single-stranded, positive-sense RNA genome, which encodes 3 structural and 7 nonstructural proteins that are expressed as a single polyprotein that undergoes cleavage. Zika genomic RNA replicates in the cytoplasm of infected host cells. Zika virus was first detected in 1947 in the blood of a febrile monkey in Uganda's Zika Forest and in crushed suspensions of the Aedes mosquito, which is one of the vectors for Zika virus. The virus remained obscure, with a few human cases confined to Africa and Asia. There are two lineages of the Zika virus, African and Asian, with the Asian strain causing outbreaks in Micronesia in 2007 and French Polynesia in 2013-2014. From here, the virus spread to Brazil with the first report of autochthonous Zika transmission in the Americas in March 2015. The rapid advance of the virus in the Americas and its likely association with microcephaly and Guillain-Barré syndrome make Zika an urgent public health concern. Ann Neurol 2016;80:479-489.
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Affiliation(s)
- Martyn K White
- Department of Neuroscience, Center for Neurovirology, Comprehensive NeuroAIDS Center, Lewis Katz School of Medicine at Temple University, Philadelphia, PA
| | - Hassen S Wollebo
- Department of Neuroscience, Center for Neurovirology, Comprehensive NeuroAIDS Center, Lewis Katz School of Medicine at Temple University, Philadelphia, PA
| | - J David Beckham
- Division of Infectious Diseases, Department of Medicine, Anschutz Medical Campus, University of Colorado, Aurora, CO
- Department of Neurology, Anschutz Medical Campus, University of Colorado, Aurora, CO
| | - Kenneth L Tyler
- Division of Infectious Diseases, Department of Medicine, Anschutz Medical Campus, University of Colorado, Aurora, CO
- Department of Neurology, Anschutz Medical Campus, University of Colorado, Aurora, CO
- Department of Microbiology and Immunology, Anschutz Medical Campus, University of Colorado, Aurora, CO
| | - Kamel Khalili
- Department of Neuroscience, Center for Neurovirology, Comprehensive NeuroAIDS Center, Lewis Katz School of Medicine at Temple University, Philadelphia, PA.
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50
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Pastula DM, Smith DE, Beckham JD, Tyler KL. Four emerging arboviral diseases in North America: Jamestown Canyon, Powassan, chikungunya, and Zika virus diseases. J Neurovirol 2016; 22:257-60. [PMID: 26903031 DOI: 10.1007/s13365-016-0428-5] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Accepted: 02/09/2016] [Indexed: 12/01/2022]
Abstract
Arthropod-borne viruses, or arboviruses, are viruses that are transmitted through the bites of mosquitoes, ticks, or sandflies. There are numerous arboviruses throughout the world capable of causing human disease spanning different viral families and genera. Recently, Jamestown Canyon, Powassan, chikungunya, and Zika viruses have emerged as increasingly important arboviruses that can cause human disease in North America. Unfortunately, there are currently no proven disease-modifying therapies for these arboviral diseases, so treatment is largely supportive. Given there are also no commercially available vaccines for these four arboviral infections, prevention is the key. To prevent mosquito or tick bites that might result in one of these arboviral diseases, people should wear long-sleeved shirts and pants while outside if feasible, apply insect repellant when going outdoors, using window screens or air conditioning to keep mosquitoes outside, and perform tick checks after being in wooded or brushy outdoor areas.
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Affiliation(s)
- Daniel M Pastula
- Neuro-Infectious Diseases Group, Department of Neurology and Division of Infectious Diseases, University of Colorado Denver, 12401 East 17th Avenue, Mailstop L950, Room 486, Aurora, CO, 80045, USA.
| | - Daniel E Smith
- Neuro-Infectious Diseases Group, Department of Neurology and Division of Infectious Diseases, University of Colorado Denver, 12401 East 17th Avenue, Mailstop L950, Room 486, Aurora, CO, 80045, USA
| | - J David Beckham
- Neuro-Infectious Diseases Group, Department of Neurology and Division of Infectious Diseases, University of Colorado Denver, 12401 East 17th Avenue, Mailstop L950, Room 486, Aurora, CO, 80045, USA
| | - Kenneth L Tyler
- Neuro-Infectious Diseases Group, Department of Neurology and Division of Infectious Diseases, University of Colorado Denver, 12401 East 17th Avenue, Mailstop L950, Room 486, Aurora, CO, 80045, USA
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