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Rahim R, Hasan A, Phadungsombat J, Hasan N, Ara N, Biswas SM, Nakayama EE, Rahman M, Shioda T. Genetic Analysis of Dengue Virus in Severe and Non-Severe Cases in Dhaka, Bangladesh, in 2018-2022. Viruses 2023; 15:v15051144. [PMID: 37243230 DOI: 10.3390/v15051144] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 05/07/2023] [Accepted: 05/08/2023] [Indexed: 05/28/2023] Open
Abstract
Dengue virus (DENV) infections have unpredictable clinical outcomes, ranging from asymptomatic or minor febrile illness to severe and fatal disease. The severity of dengue infection is at least partly related to the replacement of circulating DENV serotypes and/or genotypes. To describe clinical profiles of patients and the viral sequence diversity corresponding to non-severe and severe cases, we collected patient samples from 2018 to 2022 at Evercare Hospital Dhaka, Bangladesh. Serotyping of 495 cases and sequencing of 179 cases showed that the dominant serotype of DENV shifted from DENV2 in 2017 and 2018 to DENV3 in 2019. DENV3 persisted as the only representative serotype until 2022. Co-circulation of clades B and C of the DENV2 cosmopolitan genotype in 2017 was replaced by circulation of clade C alone in 2018 with all clones disappearing thereafter. DENV3 genotype I was first detected in 2017 and was the only genotype in circulation until 2022. We observed a high incidence of severe cases in 2019 when the DENV3 genotype I became the only virus in circulation. Phylogenetic analysis revealed clusters of severe cases in several different subclades of DENV3 genotype I. Thus, these serotype and genotype changes in DENV may explain the large dengue outbreaks and increased severity of the disease in 2019.
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Affiliation(s)
- Rummana Rahim
- Evercare Hospital Dhaka (Ex Apollo Hospitals Dhaka), Plot-81, Block-E, Bashundhara R/A, Dhaka 1229, Bangladesh
| | - Abu Hasan
- Evercare Hospital Dhaka (Ex Apollo Hospitals Dhaka), Plot-81, Block-E, Bashundhara R/A, Dhaka 1229, Bangladesh
| | | | - Nazmul Hasan
- Evercare Hospital Dhaka (Ex Apollo Hospitals Dhaka), Plot-81, Block-E, Bashundhara R/A, Dhaka 1229, Bangladesh
| | - Nikhat Ara
- Evercare Hospital Dhaka (Ex Apollo Hospitals Dhaka), Plot-81, Block-E, Bashundhara R/A, Dhaka 1229, Bangladesh
| | - Suma Mita Biswas
- Evercare Hospital Dhaka (Ex Apollo Hospitals Dhaka), Plot-81, Block-E, Bashundhara R/A, Dhaka 1229, Bangladesh
| | - Emi E Nakayama
- Research Institute for Microbial Diseases, Osaka University, Suita 565-0781, Japan
| | - Mizanur Rahman
- Evercare Hospital Dhaka (Ex Apollo Hospitals Dhaka), Plot-81, Block-E, Bashundhara R/A, Dhaka 1229, Bangladesh
| | - Tatsuo Shioda
- Research Institute for Microbial Diseases, Osaka University, Suita 565-0781, Japan
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Jonduo M, Neave MJ, Javati S, Abala D, Bilo E, Kini A, Kumbu J, Laman M, Robinson LJ, Makita L, Susapu M, Pomat W, Abdad MY, Williams DT, Horwood PF. Genomic Sequencing of Dengue Virus Strains Associated with Papua New Guinean Outbreaks in 2016 Reveals Endemic Circulation of DENV-1 and DENV-2. Am J Trop Med Hyg 2022; 107:1234-1238. [PMID: 35895415 PMCID: PMC9768287 DOI: 10.4269/ajtmh.21-1292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 03/23/2022] [Indexed: 01/05/2023] Open
Abstract
Over the past decade, the Pacific region has experienced many arboviral outbreaks, including dengue, chikungunya, and Zika viruses. Papua New Guinea (PNG) has a high burden of arboviral diseases, but there is a paucity of knowledge about the epidemiology and circulation of these viruses in the country. In this study, we report investigations into suspected arboviral outbreaks of febrile disease in PNG from December 2015 to June 2017. DENV-1 and DENV-2 were the mostly commonly detected viruses, and low circulation of DENV-3 and ZIKV was also detected. DENV-4 and CHIKV were not detected during this period. Full genome sequencing of selected positive samples revealed that circulation was dominated by endemic indigenous strains belonging to DENV-1 (genotype IV) and DENV-2 (genotype C) that have been present in the country for up to a decade. A DENV-2 sublineage was also identified that has been associated with outbreaks of severe dengue in both PNG and the Solomon Islands.
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Affiliation(s)
- Marinjho Jonduo
- Papua New Guinea Institute of Medical Research, Goroka, Eastern Highlands Province, Papua New Guinea
| | - Matthew J. Neave
- CSIRO Australian Centre for Disease Preparedness, Geelong, Victoria, Australia
| | - Sarah Javati
- Papua New Guinea Institute of Medical Research, Goroka, Eastern Highlands Province, Papua New Guinea
| | - Dorothy Abala
- Central Public Health Laboratory, Port Moresby, Papua New Guinea
| | - Eric Bilo
- Central Public Health Laboratory, Port Moresby, Papua New Guinea
| | - Anthony Kini
- Central Public Health Laboratory, Port Moresby, Papua New Guinea
| | - Janlyn Kumbu
- Central Public Health Laboratory, Port Moresby, Papua New Guinea
| | - Moses Laman
- Papua New Guinea Institute of Medical Research, Madang, Madang Province, Papua New Guinea
| | - Leanne J. Robinson
- Papua New Guinea Institute of Medical Research, Madang, Madang Province, Papua New Guinea;,Burnet Institute, Melbourne, Victoria, Australia
| | - Leo Makita
- Papua New Guinea National Department of Health, Port Moresby, Papua New Guinea
| | - Melinda Susapu
- Papua New Guinea National Department of Health, Port Moresby, Papua New Guinea
| | - William Pomat
- Papua New Guinea Institute of Medical Research, Goroka, Eastern Highlands Province, Papua New Guinea
| | - Mohammad Yazid Abdad
- Papua New Guinea Institute of Medical Research, Goroka, Eastern Highlands Province, Papua New Guinea;,Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, United Kingdom;,Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Thailand;,James Cook University, College of Public Health, Medical and Veterinary Sciences, Townsville, Queensland, Australia
| | - David T. Williams
- CSIRO Australian Centre for Disease Preparedness, Geelong, Victoria, Australia;,Address correspondence to Paul F. Horwood, College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, QLD 4811, Australia. E-mail: or David T. Williams, CSIRO, Australian Centre for Disease Preparedness, Private Bag 24, Geelong, VIC 3220, Australia, E-mail:
| | - Paul F. Horwood
- Papua New Guinea Institute of Medical Research, Goroka, Eastern Highlands Province, Papua New Guinea;,James Cook University, College of Public Health, Medical and Veterinary Sciences, Townsville, Queensland, Australia,Address correspondence to Paul F. Horwood, College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, QLD 4811, Australia. E-mail: or David T. Williams, CSIRO, Australian Centre for Disease Preparedness, Private Bag 24, Geelong, VIC 3220, Australia, E-mail:
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3
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Katusele M, Lagur S, Endersby-Harshman N, Demok S, Goi J, Vincent N, Sakur M, Dau A, Kilepak L, Gideon S, Pombreaw C, Makita L, Hoffmann A, Robinson LJ, Laman M, Karl S. Insecticide resistance in malaria and arbovirus vectors in Papua New Guinea, 2017-2022. Parasit Vectors 2022; 15:426. [PMID: 36376932 PMCID: PMC9664807 DOI: 10.1186/s13071-022-05493-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 09/13/2022] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Insecticide resistance (IR) monitoring is essential for evidence-based control of mosquito-borne diseases. While widespread pyrethroid resistance in Anopheles and Aedes species has been described in many countries, data for Papua New Guinea (PNG) are limited. Available data indicate that the local Anopheles populations in PNG remain pyrethroid-susceptible, making regular IR monitoring even more important. In addition, Aedes aegypti pyrethroid resistance has been described in PNG. Here, Anopheles and Aedes IR monitoring data generated from across PNG between 2017 and 2022 are presented. METHODS Mosquito larvae were collected in larval habitat surveys and through ovitraps. Mosquitoes were reared to adults and tested using standard WHO susceptibility bioassays. DNA from a subset of Aedes mosquitoes was sequenced to analyse the voltage-sensitive sodium channel (Vssc) region for any resistance-related mutations. RESULTS Approximately 20,000 adult female mosquitoes from nine PNG provinces were tested. Anopheles punctulatus sensu lato mosquitoes were susceptible to pyrethroids but there were signs of reduced mortality in some areas. Some Anopheles populations were also resistant to DDT. Tests also showed that Aedes. aegypti in PNG are resistant to pyrethroids and DDT and that there was also likelihood of bendiocarb resistance. A range of Vssc resistance mutations were identified. Aedes albopictus were DDT resistant and were likely developing pyrethroid resistance, given a low frequency of Vssc mutations was observed. CONCLUSIONS Aedes aegypti is highly pyrethroid resistant and also shows signs of resistance against carbamates in PNG. Anopheles punctulatus s.l. and Ae. albopictus populations exhibit low levels of resistance against pyrethroids and DDT in some areas. Pyrethroid-only bed nets are currently the only programmatic vector control tool used in PNG. It is important to continue to monitor IR in PNG and develop proactive insecticide resistance management strategies in primary disease vectors to retain pyrethroid susceptibility especially in the malaria vectors for as long as possible.
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Affiliation(s)
- Michelle Katusele
- PNG Institute of Medical Research, Madang, Madang Province Papua New Guinea
| | - Solomon Lagur
- PNG Institute of Medical Research, Madang, Madang Province Papua New Guinea
| | - Nancy Endersby-Harshman
- School of BioSciences, Bio21 Institute, The University of Melbourne, Parkville, Victoria Australia
| | - Samuel Demok
- PNG Institute of Medical Research, Madang, Madang Province Papua New Guinea
| | - Joelyn Goi
- PNG Institute of Medical Research, Madang, Madang Province Papua New Guinea
| | - Naomi Vincent
- PNG Institute of Medical Research, Madang, Madang Province Papua New Guinea
- Burnet Institute of Medical Research, Melbourne, Victoria Australia
- Papua New Guinea National Department of Health, Port Moresby, National Capitol District Papua New Guinea
| | - Muker Sakur
- PNG Institute of Medical Research, Madang, Madang Province Papua New Guinea
| | - Absalom Dau
- PNG Institute of Medical Research, Madang, Madang Province Papua New Guinea
| | - Lemen Kilepak
- PNG Institute of Medical Research, Madang, Madang Province Papua New Guinea
| | - Stephen Gideon
- PNG Institute of Medical Research, Madang, Madang Province Papua New Guinea
- Papua New Guinea National Department of Health, Port Moresby, National Capitol District Papua New Guinea
| | - Christine Pombreaw
- PNG Institute of Medical Research, Madang, Madang Province Papua New Guinea
| | - Leo Makita
- Papua New Guinea National Department of Health, Port Moresby, National Capitol District Papua New Guinea
| | - Ary Hoffmann
- School of BioSciences, Bio21 Institute, The University of Melbourne, Parkville, Victoria Australia
| | - Leanne J. Robinson
- PNG Institute of Medical Research, Madang, Madang Province Papua New Guinea
- Burnet Institute of Medical Research, Melbourne, Victoria Australia
- School of Public Health and Preventive Medicine, Monash University, Melbourne, Victoria Australia
| | - Moses Laman
- PNG Institute of Medical Research, Madang, Madang Province Papua New Guinea
| | - Stephan Karl
- PNG Institute of Medical Research, Madang, Madang Province Papua New Guinea
- Australian Institute of Tropical Health and Medicine, James Cook University, Smithfield, Queensland Australia
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4
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Arguni E, Indriani C, Rahayu A, Supriyati E, Yohan B, Hayati RF, Wardana S, Tantowijoyo W, Anshari MR, Rahayu E, Ahmad RA, Utarini A, Simmons CP, Sasmono RT. Dengue virus population genetics in Yogyakarta, Indonesia prior to city-wide Wolbachia deployment. INFECTION, GENETICS AND EVOLUTION : JOURNAL OF MOLECULAR EPIDEMIOLOGY AND EVOLUTIONARY GENETICS IN INFECTIOUS DISEASES 2022; 102:105308. [PMID: 35644356 DOI: 10.1016/j.meegid.2022.105308] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 04/29/2022] [Accepted: 05/22/2022] [Indexed: 06/15/2023]
Abstract
Dengue has been endemic in Yogyakarta, Indonesia for decades. Here, we report the dengue epidemiology, entomology, and virology in Yogyakarta in 2016-2017, prior to the commencement of the Applying Wolbachia to Eliminate Dengue (AWED) randomized trial. Dengue epidemiological data were compiled and blood samples from dengue-suspected patients were tested for dengue virus (DENV). Ae. aegypti mosquito samples were caught from the field using BG-Sentinel traps and tested for the presence of DENV infection. Sequencing of the DENV E gene was used to determine the phylogeny and genotypes of circulating DENV. Within the last decade, the 2016-2017 dengue incidence was considered very high. Among the 649 plasma samples collected between March 2016-February 2017; and 36,910 mosquito samples collected between December 2016-May 2017, a total of 197 and 38 samples were DENV-positive by qRT-PCR, respectively. All four DENV serotypes were detected, with DENV-3 (n = 88; 44.67%) and DENV-1 (n = 87; 44.16%) as the predominant serotype, followed by DENV-4 (n = 12; 6.09%) and DENV-2 (n = 10; 5.08%). The Yogyakarta DENV-1 isolates were classified into Genotype I and IV, while DENV-2, DENV-3, and DENV-4 isolates were classified into the Cosmopolitan genotype, Genotype I, and Genotype II, respectively. Yogyakarta DENV isolates were closely related to Indonesian strains from neighboring Javanese cities, consistent with the endemic circulation of DENV on this highly populous island. Our study provides comprehensive baseline information on the DENV population genetic characteristics in Yogyakarta, which are useful as baseline data for the AWED trial and the future DENV surveillance in the city in the presence of a Wolbachia-infected Ae. aegypti population.
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Affiliation(s)
- Eggi Arguni
- Department of Child Health, Faculty of Medicine, Public Health, and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia; World Mosquito Program Yogyakarta, Centre of Tropical Medicine, Faculty of Medicine, Public Health, and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Citra Indriani
- World Mosquito Program Yogyakarta, Centre of Tropical Medicine, Faculty of Medicine, Public Health, and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia; Department of Biostatistics, Epidemiology and Population Health, Faculty of Medicine, Public Health, and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Ayu Rahayu
- World Mosquito Program Yogyakarta, Centre of Tropical Medicine, Faculty of Medicine, Public Health, and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Endah Supriyati
- World Mosquito Program Yogyakarta, Centre of Tropical Medicine, Faculty of Medicine, Public Health, and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | | | - Rahma F Hayati
- Eijkman Institute for Molecular Biology, Jakarta, Indonesia
| | - Satrio Wardana
- World Mosquito Program Yogyakarta, Centre of Tropical Medicine, Faculty of Medicine, Public Health, and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Warsito Tantowijoyo
- World Mosquito Program Yogyakarta, Centre of Tropical Medicine, Faculty of Medicine, Public Health, and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Muhammad Ridwan Anshari
- World Mosquito Program Yogyakarta, Centre of Tropical Medicine, Faculty of Medicine, Public Health, and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Endang Rahayu
- Disease Control Department, Yogyakarta District Health Office, Yogyakarta, Indonesia
| | - Riris Andono Ahmad
- World Mosquito Program Yogyakarta, Centre of Tropical Medicine, Faculty of Medicine, Public Health, and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia; Department of Biostatistics, Epidemiology and Population Health, Faculty of Medicine, Public Health, and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Adi Utarini
- World Mosquito Program Yogyakarta, Centre of Tropical Medicine, Faculty of Medicine, Public Health, and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia; Department of Health Policy and Management, Faculty of Medicine, Public Health, and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Cameron P Simmons
- World Mosquito Program, Institute of Vector Borne Disease, Monash University, Clayton, Victoria 3800, Australia
| | - R Tedjo Sasmono
- Eijkman Institute for Molecular Biology, Jakarta, Indonesia.
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5
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Matthews RJ, Kaluthotage I, Russell TL, Knox TB, Horwood PF, Craig AT. Arboviral Disease Outbreaks in the Pacific Islands Countries and Areas, 2014 to 2020: A Systematic Literature and Document Review. Pathogens 2022; 11:74. [PMID: 35056022 PMCID: PMC8779081 DOI: 10.3390/pathogens11010074] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 12/19/2021] [Accepted: 12/23/2021] [Indexed: 12/10/2022] Open
Abstract
Arthropod-borne diseases pose a significant public health threat, accounting for greater than 17% of infectious disease cases and 1 million deaths annually. Across Pacific Island countries and areas (PICs), outbreaks of dengue, chikungunya, and Zika are increasing in frequency and scale. Data about arbovirus outbreaks are incomplete, with reports sporadic, delayed, and often based solely on syndromic surveillance. We undertook a systematic review of published and grey literature and contacted relevant regional authorities to collect information about arboviral activity affecting PICs between October 2014 and June 2020. Our literature search identified 1176 unique peer-reviewed articles that were reduced to 25 relevant publications when screened. Our grey literature search identified 873 sources. Collectively, these data reported 104 unique outbreaks, including 72 dengue outbreaks affecting 19 (out of 22) PICs, 14 chikungunya outbreaks affecting 11 PICs, and 18 Zika outbreaks affecting 14 PICs. Our review is the most complete account of arboviral outbreaks to affect PICs since comparable work was published in 2014. It highlights the continued elevated level of arboviral activity across the Pacific and inconsistencies in how information about outbreaks is reported and recorded. It demonstrates the importance of a One-Health approach and the role that improved communication and reporting between different governments and sectors play in understanding the emergence, circulation, and transboundary risks posed by arboviral diseases.
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Affiliation(s)
- Rosie J. Matthews
- Department of Medicine, Cairns Hospital, Cairns, QID 4870, Australia
| | - Ishani Kaluthotage
- Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, QID 4870, Australia; (I.K.); (T.L.R.)
- College of Public Health, Medical and Veterinary Sciences, James Cook University, Cairns, QID 4870, Australia
| | - Tanya L. Russell
- Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, QID 4870, Australia; (I.K.); (T.L.R.)
- College of Public Health, Medical and Veterinary Sciences, James Cook University, Cairns, QID 4870, Australia
| | - Tessa B. Knox
- Vanuatu Country Liaison Office, World Health Organization, Port Vila, Vanuatu;
| | - Paul F. Horwood
- Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, QID 4811, Australia;
- College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, QID 4811, Australia
| | - Adam T. Craig
- School of Population Health, University of New South Wales, Sydney, NSW 1466, Australia
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Poltep K, Phadungsombat J, Nakayama EE, Kosoltanapiwat N, Hanboonkunupakarn B, Wiriyarat W, Shioda T, Leaungwutiwong P. Genetic Diversity of Dengue Virus in Clinical Specimens from Bangkok, Thailand, during 2018-2020: Co-Circulation of All Four Serotypes with Multiple Genotypes and/or Clades. Trop Med Infect Dis 2021; 6:tropicalmed6030162. [PMID: 34564546 PMCID: PMC8482112 DOI: 10.3390/tropicalmed6030162] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 08/31/2021] [Accepted: 09/01/2021] [Indexed: 11/16/2022] Open
Abstract
Dengue is an arboviral disease highly endemic in Bangkok, Thailand. To characterize the current genetic diversity of dengue virus (DENV), we recruited patients with suspected DENV infection at the Hospital for Tropical Diseases, Bangkok, during 2018-2020. We determined complete nucleotide sequences of the DENV envelope region for 111 of 276 participant serum samples. All four DENV serotypes were detected, with the highest proportion being DENV-1. Although all DENV-1 sequences were genotype I, our DENV-1 sequences were divided into four distinct clades with different distributions in Asian countries. Two genotypes of DENV-2 were identified, Asian I and Cosmopolitan, which were further divided into two and three distinct clades, respectively. In DENV-3, in addition to the previously dominant genotype III, a cluster of 6 genotype I viruses only rarely reported in Thailand was also observed. All of the DENV-4 viruses belonged to genotype I, but they were separated into three distinct clades. These results indicated that all four serotypes of DENV with multiple genotypes and/or clades co-circulate in Bangkok. Continuous investigation of DENV is warranted to further determine the relationship between DENV within Thailand and neighboring countries in Southeast Asia and Asia.
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Affiliation(s)
- Kanaporn Poltep
- Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand; (K.P.); (N.K.)
- Mahidol-Osaka Center for Infectious Diseases (MOCID), Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand; (J.P.); (E.E.N.)
- The Monitoring and Surveillance Center for Zoonotic Diseases in Wildlife and Exotic Animals, Faculty of Veterinary Science, Mahidol University, Nakhon Pathom 73170, Thailand;
| | - Juthamas Phadungsombat
- Mahidol-Osaka Center for Infectious Diseases (MOCID), Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand; (J.P.); (E.E.N.)
- Department of Viral Infections, Research Institute for Microbial Diseases (RIMD), Osaka University, Osaka 565-0871, Japan
| | - Emi E. Nakayama
- Mahidol-Osaka Center for Infectious Diseases (MOCID), Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand; (J.P.); (E.E.N.)
- Department of Viral Infections, Research Institute for Microbial Diseases (RIMD), Osaka University, Osaka 565-0871, Japan
| | - Nathamon Kosoltanapiwat
- Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand; (K.P.); (N.K.)
| | - Borimas Hanboonkunupakarn
- Department of Clinical Tropical Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand;
| | - Witthawat Wiriyarat
- The Monitoring and Surveillance Center for Zoonotic Diseases in Wildlife and Exotic Animals, Faculty of Veterinary Science, Mahidol University, Nakhon Pathom 73170, Thailand;
| | - Tatsuo Shioda
- Mahidol-Osaka Center for Infectious Diseases (MOCID), Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand; (J.P.); (E.E.N.)
- Department of Viral Infections, Research Institute for Microbial Diseases (RIMD), Osaka University, Osaka 565-0871, Japan
- Correspondence: (T.S.); (P.L.)
| | - Pornsawan Leaungwutiwong
- Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand; (K.P.); (N.K.)
- Correspondence: (T.S.); (P.L.)
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7
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Long H, Zhang C, Chen C, Tang J, Zhang B, Wang Y, Pang J, Su W, Li K, Di B, Chen YQ, Shu Y, Du X. Assessment of the global circulation and endemicity of dengue. Transbound Emerg Dis 2021; 69:2148-2155. [PMID: 34197697 DOI: 10.1111/tbed.14211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 06/27/2021] [Indexed: 11/30/2022]
Abstract
Dengue is a significant public health issue, affecting hundreds of millions of people worldwide. As it is spreading from tropical and subtropical zones, some regions previously recognised as non-endemic are at risk of becoming endemic. However, the global circulation of dengue is not fully understood and quantitative measurements of endemicity levels are lacking, posing an obstacle in the precise control of dengue spread. In this study, a sequence-based pipeline was designed based on random sampling to study the transmission of dengue. The limited intercontinental transmission was identified, while regional circulation of dengue was quantified in terms of importation, local circulation and exportation. Additionally, hypo- and hyper-endemic regions were identified using a new metric, with the former characterised by low local circulation and increased importation, whereas the latter by high local circulation and reduced importation. In this study, the global circulation pattern of dengue was examined and a sequence-based endemicity measurement was proposed, which will be helpful for future surveillance and targeted control of dengue.
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Affiliation(s)
- Haoyu Long
- School of Public Health (Shenzhen), Sun Yat-Sen University, Guangzhou, China
| | - Chi Zhang
- School of Public Health (Shenzhen), Sun Yat-Sen University, Guangzhou, China
| | - Cai Chen
- School of Public Health (Shenzhen), Sun Yat-Sen University, Guangzhou, China
| | - Jing Tang
- School of Public Health (Shenzhen), Sun Yat-Sen University, Guangzhou, China
| | - Bing Zhang
- School of Public Health (Shenzhen), Sun Yat-Sen University, Guangzhou, China
| | - Yinghan Wang
- School of Public Health (Shenzhen), Sun Yat-Sen University, Guangzhou, China
| | - Jiali Pang
- School of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Wenzhe Su
- Guangzhou Center for Disease Control and Prevention, Guangzhou, China
| | - Kuibiao Li
- Guangzhou Center for Disease Control and Prevention, Guangzhou, China
| | - Biao Di
- Guangzhou Center for Disease Control and Prevention, Guangzhou, China
| | - Yao-Qing Chen
- School of Public Health (Shenzhen), Sun Yat-Sen University, Guangzhou, China
| | - Yuelong Shu
- School of Public Health (Shenzhen), Sun Yat-Sen University, Guangzhou, China.,Key Laboratory of Tropical Disease Control, Ministry of Education, Sun Yat-Sen University, Guangzhou, China
| | - Xiangjun Du
- School of Public Health (Shenzhen), Sun Yat-Sen University, Guangzhou, China.,Key Laboratory of Tropical Disease Control, Ministry of Education, Sun Yat-Sen University, Guangzhou, China
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8
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Tissera HA, Jayamanne BDW, Raut R, Janaki SMD, Tozan Y, Samaraweera PC, Liyanage P, Ghouse A, Rodrigo C, de Silva AM, Fernando SD. Severe Dengue Epidemic, Sri Lanka, 2017. Emerg Infect Dis 2021; 26:682-691. [PMID: 32186490 PMCID: PMC7101108 DOI: 10.3201/eid2604.190435] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
In 2017, a dengue epidemic of unexpected magnitude occurred in Sri Lanka. A total of 186,101 suspected cases and 440 dengue-related deaths occurred. We conducted a comprehensive analysis of this epidemic by comparing national surveillance data for 2017 with data from the preceding 5 years. In all Sri Lanka districts, dengue incidence in 2017 increased significantly over incidence during the previous 5 years. Older schoolchildren and young adults were more clinically symptomatic than those at extremes of age. Limited virologic surveillance showed the dominant circulating variant was dengue virus type 2 cosmopolitan genotype in the most affected district. One quarter of total annual cases were reported 5 weeks after the southwest monsoon started. Changes in vector abundance were not predictive of the increased incidence. Direct government expenditures on dengue control activities in 2017 were US $12.7 million. The lessons learned from this outbreak are useful for other tropical nations facing increasing dengue incidence.
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9
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Walker J, Pyke A, Florian P, Moore F, Smoll N, Adegbija O, Khan A, Hasan R, Carroll H, Harris RR, Kandaker G. Re-emergence of dengue virus in regional Queensland: 2019 dengue virus outbreak in Rockhampton, Central Queensland, Australia. ACTA ACUST UNITED AC 2021; 45. [PMID: 34139967 DOI: 10.33321/cdi.2021.45.31] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Objective(s) To describe an autochthonous dengue virus type 2 (DENV-2) outbreak in Central Queensland from May 2019 and subsequent public health actions. Design and setting Public health outbreak investigation of locally acquired DENV-2 cases in Rockhampton, Central Queensland. This included laboratory investigations, associated mosquito vector surveillance, and control measures implemented in response to the outbreak. Results Twenty-one locally-acquired DENV-2 cases were identified during the Rockhampton outbreak (from 23 May to 7 October 2019): 13 laboratory-confirmed and eight probable cases. Clinical symptoms included lethargy (100%); fever (95%); headache (95%); and aches and pains (90%). Inspections of premises demonstrated that Aedes aegypti was present in 9.5% of those investigated which was more than half of the premises identified as containing mosquitoes. Nucleotide sequencing of a DENV-2 isolate recovered from the first confirmed case and DENV-2 RNA from an additional 5 patients indicated a single DENV-2 strain was responsible for the outbreak which was most closely related to DENV-2 strains from Southeast Asia. Conclusions The 2019 DENV-2 outbreak in Rockhampton, Central Queensland, Australia, likely resulted from the importation of a strain, most closely related to DENV-2 strains from Southeast Asia and is the first reported outbreak in the region specifically implicating DENV-2. Given the presence of Aedes aegypti in Rockhampton, appropriate medical and mosquito avoidance advice; ongoing surveillance; and deployment of mosquito control strategies for the prevention of dengue and other mosquito-borne diseases should be priorities for this region.
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Affiliation(s)
- Jacina Walker
- Central Queensland Public Health Unit, Central Queensland Hospital and Health Service, Rockhampton, Queensland, Australia.,National Centre for Epidemiology and Population Health, Research School of Population Health, Australian National University, Canberra, ACT, Australia
| | - Alyssa Pyke
- Public Health Virology Laboratory, Forensic and Scientific Services, Coopers Plains, Queensland, Australia
| | | | - Fred Moore
- Public Health Virology Laboratory, Forensic and Scientific Services, Coopers Plains, Queensland, Australia
| | - Nicolas Smoll
- Central Queensland Public Health Unit, Central Queensland Hospital and Health Service, Rockhampton, Queensland, Australia
| | - Odewumi Adegbija
- Central Queensland Public Health Unit, Central Queensland Hospital and Health Service, Rockhampton, Queensland, Australia
| | - Arifuzzaman Khan
- Central Queensland Public Health Unit, Central Queensland Hospital and Health Service, Rockhampton, Queensland, Australia
| | - Rashidul Hasan
- Central Queensland University, Rockhampton, Queensland, Australia
| | - Heidi Carroll
- Communicable Disease Branch, Queensland Health, Brisbane, Queensland, Australia
| | - Rachael Rodney Harris
- National Centre for Epidemiology and Population Health, Research School of Population Health, Australian National University, Canberra, ACT, Australia
| | - Gulam Kandaker
- Central Queensland Public Health Unit, Central Queensland Hospital and Health Service, Rockhampton, Queensland, Australia.,Central Queensland University, Rockhampton, Queensland, Australia
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10
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Hall-Mendelin S, Pyke AT, Ramirez AL, Staunton KM, Burtonclay P, McMahon J, Barcelon J, van den Hurk AF. Infection, Dissemination, and Replication of Urban and Sylvatic Strains of Dengue Virus Type 2 (Flaviviridae: Flavivirus) in Australian Aedes aegypti (Diptera: Culicidae). JOURNAL OF MEDICAL ENTOMOLOGY 2021; 58:1412-1418. [PMID: 33459781 DOI: 10.1093/jme/tjaa292] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Indexed: 06/12/2023]
Abstract
The dengue viruses (DENVs) occur throughout tropical and subtropical regions of the world where they infect 100s of millions of people annually. In Australia, the dengue receptive zone is confined to the northern state of Queensland where the principal vector Aedes aegypti (L.) is present. In the current study, two populations of Ae. aegypti from north Queensland were exposed to two urban outbreak strains and one sylvatic strain of dengue virus type 2 (DENV-2). The titer of virus required to infect 50% of mosquitoes was between 105 and 106 50% tissue culture infectious dose (TCID)50/ml and was influenced by the combination of the origin of Ae. aegypti population and virus strain. When exposed to infectious bloodmeal titers > 106 TCID50/ml, infection and dissemination rates were all > 50% and were significantly affected by the origin of the mosquito population but not by the strain of DENV-2. Replication of DENV-2 was also significantly affected by the mosquito population and the titer of the infectious bloodmeal that mosquitoes were exposed to. The results of this study are discussed in the context of DENV transmission dynamics in northern Australia and the relative fitness of the sylvatic virus strain in urban Ae. aegypti populations.
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Affiliation(s)
- Sonja Hall-Mendelin
- Public Health Virology, Forensic and Scientific Services, Department of Health, Brisbane, Queensland, Australia
| | - Alyssa T Pyke
- Public Health Virology, Forensic and Scientific Services, Department of Health, Brisbane, Queensland, Australia
| | - Ana L Ramirez
- College of Public Health, Medical and Veterinary Sciences, James Cook University, Cairns, Queensland, Australia
- Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, Queensland, Australia
- Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis, CA
| | - Kyran M Staunton
- College of Public Health, Medical and Veterinary Sciences, James Cook University, Cairns, Queensland, Australia
- Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, Queensland, Australia
| | - Peter Burtonclay
- Public Health Virology, Forensic and Scientific Services, Department of Health, Brisbane, Queensland, Australia
| | - Jamie McMahon
- Public Health Virology, Forensic and Scientific Services, Department of Health, Brisbane, Queensland, Australia
| | - Jean Barcelon
- Public Health Virology, Forensic and Scientific Services, Department of Health, Brisbane, Queensland, Australia
| | - Andrew F van den Hurk
- Public Health Virology, Forensic and Scientific Services, Department of Health, Brisbane, Queensland, Australia
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11
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Cabral AD, Oliveira LPRD, Molina JSTDO, Carmo AMDS, Suzuki RB, Oliveira CMD, Martins LPA, Prudencio CR, Eterovic A, Sperança MA. Epidemiological and genetic aspects of the largest dengue outbreak recorded in 2015 in Southeastern Brazil. Rev Inst Med Trop Sao Paulo 2021; 63:e17. [PMID: 33787737 PMCID: PMC7997670 DOI: 10.1590/s1678-9946202163017] [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: 10/07/2020] [Accepted: 01/12/2021] [Indexed: 11/22/2022] Open
Abstract
Dengue virus, the etiological agent of dengue fever (DF) occurs in four
genetically distinct serotypes (DENV1-4), being transmitted by female
Aedes mosquitoes. DF incidence is increasing in Brazil,
following vector dispersal, proliferation and DENV serotypes introduction,
co-circulation and substitution. Medium- and small-sized cities in Sao Paulo
State, such as Marilia (Midwest region), have been affected by huge epidemics.
To understand the evolution of DENV epidemics in medium-sized cities, in this
study a historical data on DENV incidence (2000-2015) in Marilia, was evaluated.
Previous studies disclosed regional and specific DF outcomes associated with
2007 outbreak in that city, when co-circulating DENV1 and DENV3 presented
different hematological profiles. In this study, characteristics of 2007 DENV
epidemics were compared to the epidemiological, hematological and demographic
outlines of the major outbreak of DENV1 in Marilia in 2015. DENV1 genetic
diversity was assessed through capsid and pre-membrane junction encoding gene
(CprM) sequencing. The results revealed circulation of DENV1 serotype from 2007
to 2015, with epidemics occurring every three-years until 2013 and then,
increasing yearly. There were significant differences in hematological profiles
of DENV1 patients between 2015 and 2007. CprM showed DENV1 genetic variability
in 2015, contrasting with the unique sequence pattern in 2007. These results
reinforce the regional and temporal characteristics of DENV epidemics that need
local public health research to improve care for people and to limit the spread
of new serotypes/genotypes to uninfected areas.
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Affiliation(s)
- Aline Diniz Cabral
- Universidade Federal do ABC, Centro de Ciências Naturais e Humanas, São Bernardo do Campo, São Paulo, Brazil.,Instituto Adolfo Lutz, Centro de Imunologia, São Paulo, São Paulo, Brazil
| | | | | | - Andreia Moreira Dos Santos Carmo
- Universidade Federal do ABC, Centro de Ciências Naturais e Humanas, São Bernardo do Campo, São Paulo, Brazil.,Instituto Adolfo Lutz; Centro de Laboratório Regional VIII, Santo André, São Paulo, Brazil
| | - Rodrigo Buzinaro Suzuki
- Universidade Federal do ABC, Centro de Ciências Naturais e Humanas, São Bernardo do Campo, São Paulo, Brazil.,Faculdade de Medicina de Marilia, Disciplina de Parasitologia, Marília, São Paulo, Brazil.,Universidade de Marilia, Faculdade de Medicina, Marília, São Paulo, Brazil
| | | | | | | | - André Eterovic
- Universidade Federal do ABC, Centro de Ciências Naturais e Humanas, Santo André, São Paulo, Brazil
| | - Márcia Aparecida Sperança
- Universidade Federal do ABC, Centro de Ciências Naturais e Humanas, São Bernardo do Campo, São Paulo, Brazil
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12
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Calvez E, Somlor S, Viengphouthong S, Balière C, Bounmany P, Keosenhom S, Caro V, Grandadam M. Rapid genotyping protocol to improve dengue virus serotype 2 survey in Lao PDR. PLoS One 2020; 15:e0237384. [PMID: 32764809 PMCID: PMC7413503 DOI: 10.1371/journal.pone.0237384] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 07/24/2020] [Indexed: 12/30/2022] Open
Abstract
Dengue fever is one of the major public health problems in Lao PDR. Over the last decade, dengue virus (DENV) epidemics were characterized by a novel predominant serotype accompanied by at least two other serotypes. Since 2008, DENV-2 circulated at a low level in Lao PDR but its epidemiologic profile changed at the end of 2018. Indeed, the number of confirmed DENV-2 cases suddenly increased in October 2018 and DENV-2 became predominant at the country level in early 2019. We developed a Genotype Screening Protocol (GSP) to determine the origin(s) of the Lao DENV-2 and study their genetic polymorphism. With a good correlation with full envelope gene sequencing data, this molecular epidemiology tool evidence the co-circulation of two highly polymorphic DENV-2 genotypes, i.e. Asian I and Cosmopolitan genotypes, over the last five years, suggesting multiple introductions of DENV-2 in the country. GSP approach provides relevant first line information that may help countries with limited laboratory resources to reinforce their capabilities to DENV-2 and to follow the epidemics progresses and assess situations at the regional level.
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Affiliation(s)
- Elodie Calvez
- Institut Pasteur du Laos, Vientiane, Lao People’s Democratic Republic
- * E-mail:
| | - Somphavanh Somlor
- Institut Pasteur du Laos, Vientiane, Lao People’s Democratic Republic
| | | | | | | | - Sitsana Keosenhom
- Institut Pasteur du Laos, Vientiane, Lao People’s Democratic Republic
| | | | - Marc Grandadam
- Institut Pasteur du Laos, Vientiane, Lao People’s Democratic Republic
- Institut de Recherche Biomédicale des Armées, Brétigny-sur-Orge, France
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13
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Pulsan F, Sobi K, Anga G, Vince J, Duke T. An outbreak of dengue fever in children in the National Capital District of Papua New Guinea in 2016. Paediatr Int Child Health 2020; 40:177-180. [PMID: 32330106 DOI: 10.1080/20469047.2020.1756106] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
BACKGROUND The first documented outbreak of dengue which included cases with haemorrhage occurred in Papua New Guinea in 2016. AIM To document the presentation and outcome of children with dengue in Port Moresby. METHODS This prospective cross-sectional descriptive study was conducted in Port Moresby General Hospital during a 6-month period from 6 January to 6 July 2016. Altogether, 165 children aged 1-14 years who met the WHO criteria for probable dengue were assessed and treated. Clinical features, presence of warning signs and signs of severe dengue, date of onset, management and outcome were recorded. Blood specimens were collected for serological testing and full blood count. RESULTS The median age was 6 years (interquartile range 3-8). Eighty-eight (53%) children had no warning signs and were managed as outpatients. Of the 165 patients, 42 (25%) had abdominal pain, 28 (17%) had bleeding and 3 (2%) had clinical evidence of fluid accumulation. The median (IQR) lowest platelet count in those tested was 34 × 109/L (22-54). Two children were transfused with packed red blood cells and one received a platelet transfusion. No child developed dengue shock and none died. Non-structural protein 1 (NS1) and dengue IgM were positive in 122/144 (85%) and 36/111 (32%) of blood samples, respectively. 150/151 blood samples tested for dengue were positive on one or more tests. CONCLUSION There is the potential for future outbreaks of increased severity in Papua New Guinea. Surveillance, mosquito reduction initiatives and health education programmes are needed to reduce the impact of future outbreaks.
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Affiliation(s)
- Francis Pulsan
- Discipline of Child Health of Clinical Sciences Division, School of Medicine and Health Sciences, University of Papua New Guinea , Port Moresby, Papua New Guinea
| | - Kone Sobi
- Department of Paediatrics, Port Moresby General Hospital , Port Moresby, Papua New Guinea
| | - Gwenda Anga
- Department of Paediatrics, Port Moresby General Hospital , Port Moresby, Papua New Guinea
| | - John Vince
- Discipline of Child Health of Clinical Sciences Division, School of Medicine and Health Sciences, University of Papua New Guinea , Port Moresby, Papua New Guinea
| | - Trevor Duke
- Discipline of Child Health of Clinical Sciences Division, School of Medicine and Health Sciences, University of Papua New Guinea , Port Moresby, Papua New Guinea.,Centre for International Child Health, University of Melbourne , Melbourne, Australia
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14
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Yu J, Li X, He X, Liu X, Zhong Z, Xie Q, Zhu L, Jia F, Mao Y, Chen Z, Wen Y, Ma D, Yu L, Zhang B, Zhao W, Xiao W. Epidemiological and Evolutionary Analysis of Dengue-1 Virus Detected in Guangdong during 2014: Recycling of Old and Formation of New Lineages. Am J Trop Med Hyg 2020; 101:870-883. [PMID: 31392945 PMCID: PMC6779206 DOI: 10.4269/ajtmh.18-0951] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
The incidence of dengue is increasing in Guangdong, China, with the largest outbreak to date in 2014. Widespread awareness of epidemiological and molecular characteristics of the dengue virus (DENV) is required. In 2014, we isolated the virus from patients and sequenced its genome. The sequences of DENV isolated from Guangdong and other countries screened since 2005 were studied to establish molecular evolutionary databases along with epidemiological data to explore its epidemiological, phylogenetic, and molecular characteristics. Causes underlying the occurrence of the dengue epidemic included importation and localization of the virus. The number of indigenous cases significantly exceeded that of imported cases. Dengue virus 1 is the most important serotype and caused the long-term epidemic locally. Based on the data available since 2005, DENV1 was divided into three genotypes (I, IV, and V). Only genotypes I and V were detected in 2014. In 2014, an epidemic involving old lineages of DENV1 genotype V occurred after 2 years of silence. The genotype was previously detected from 2009 to 2011. Genotype I, which caused recent epidemics, demonstrated a continuation of new lineages, and a predictive pattern of molecular evolution since 2005 among the four lineages was present. The DENV isolated from Guangdong was closely related to those causing large-scale epidemics in neighboring countries, suggesting the possibility of its import from these countries. The lack of sufficient epidemiological data and evidence on the local mosquito-borne DENV emphasizes the importance of studying the molecular evolutionary features and establishing a well-established phylogenetic tree for dengue prevention and control in Guangdong.
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Affiliation(s)
- Jianhai Yu
- Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
| | - Xujuan Li
- Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
| | - Xiaoen He
- Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
| | - Xuling Liu
- Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
| | - Zhicheng Zhong
- Guangdong Women and Children's Hospital, Guangzhou Medical University, Guangzhou, China
| | - Qian Xie
- Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
| | - Li Zhu
- Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
| | - Fengyun Jia
- Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
| | - Yingxue Mao
- Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
| | - Zongqiu Chen
- Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
| | - Ying Wen
- Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
| | - Danjuan Ma
- Guangdong Women and Children's Hospital, Guangzhou Medical University, Guangzhou, China
| | - Linzhong Yu
- Department of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Bao Zhang
- Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
| | - Wei Zhao
- Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmacy, Southern Medical University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
| | - Weiwei Xiao
- School of Public Health, Guangdong Medical University, Dongguan, China.,Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
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15
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Genomic epidemiological characteristics of dengue fever in Guangdong province, China from 2013 to 2017. PLoS Negl Trop Dis 2020; 14:e0008049. [PMID: 32126080 PMCID: PMC7053713 DOI: 10.1371/journal.pntd.0008049] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 01/11/2020] [Indexed: 12/02/2022] Open
Abstract
Dengue fever, a mosquito-borne viral disease in humans, has been endemic in many Southeast Asian countries. Since its first outbreak in 1978 in Foshan, Guangdong province, China, dengue has been continually epidemic in recent years in Guangdong, which raised the concern whether dengue infection is endemic in Guangdong. In this study, we performed phylogenetic, recombinant, and nucleotide variation analyses of 114 complete genome sequences of dengue virus serotypes 1–4 (DENV1-4) collected from 2013 to 2017 in 18 of 21 cities of Guangdong. Phylogenetic analyses revealed that DENV sequences did not form a single cluster, indicating that dengue fever was not endemic in Guangdong, although DENV1-4 co-circulated in Guangdong. Twenty intra-serotype recombinant isolates involving DENV1-4 were detected, but no inter-serotype recombinant events were identified in this study. Additionally, the most recombinant events were detected simultaneously in the gene NS3 of DENV1-4. Nucleotide variation analyses showed that no significant intra-serotype differences were observed, whereas more significant inter-subtype differences were discovered in non-structural genes than in structural genes. Our investigation will facilitate the understanding of the current prevalent status of dengue fever in Guangdong and contribute to designing more effective preventive and control strategies for dengue infection. In 1978, dengue fever was first reported in Guangdong province, China, and this has been continuously prevalent in Guangdong in recent years. This is responsible for the heavy burden on the control of dengue, and raises the concern about whether dengue outbreaks have become endemic in Guangdong. Previous studies based on single E gene or few full-length genome sequences were inconclusive. In this study, we sequenced 114 DENV complete genomes of DENV1-4 obtained from 2013 to 2017 in Guangdong and further analyzed the epidemiological and molecular characteristics. Phylogenetic analyses revealed that dengue fever was not endemic in Guangdong, which was indirectly supported by results of our recombination analyses. Nucleotide variation analyses indicated that purification selection shaped dengue virus population. Our investigation will facilitate the development of more effective epidemiological surveillance strategies for dengue infection.
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16
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Hamel R, Surasombatpattana P, Wichit S, Dauvé A, Donato C, Pompon J, Vijaykrishna D, Liegeois F, Vargas RM, Luplertlop N, Missé D. Phylogenetic analysis revealed the co-circulation of four dengue virus serotypes in Southern Thailand. PLoS One 2019; 14:e0221179. [PMID: 31415663 PMCID: PMC6695175 DOI: 10.1371/journal.pone.0221179] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 07/31/2019] [Indexed: 12/15/2022] Open
Abstract
Dengue fever is caused by dengue viruses (DENV) from the Flavivirus genus and is the most prevalent arboviral disease. DENV exists in four immunogenically distinct and genetically-related serotypes (DENV-1 to 4), each subdivided in genotypes. Despite the endemicity of all four DENV serotypes in Thailand, no prior study has characterized the circulation of DENV in the southern provinces of the country. To determine the genetic diversity of DENV circulating in Southern Thailand in 2015 and 2016, we investigated 46 viruses from 182 patients' sera confirmed positive for DENV by serological and Nested RT-PCR tests. Our dataset included 2 DENV-1, 20 DENV-2, 9 DENV-3 and 15 DENV-4. Phylogenetic analysis was performed on viral envelop sequences. This revealed that part of the identified genotypes from DENV-1 and DENV-4 had been predominant in Asia (genotype I for both serotypes), while genotype II for DENV-4 and the Cosmopolitan genotype DENV-2 were also circulating. Whereas DENV-3 genotype II had been predominantly detected in South East Asia during the previous decades, we found genotype III and genotype I in Southern Thailand. All DENV genotype identified in this study were closely related to contemporary strains circulating in Southeast Asian countries, emphasizing the regional circulation of DENV. These results provide new insights into the co-circulation of all four DENV serotypes in Southern Thailand, confirming the hyperendemicity of DENV in the region. These findings also suggest a new trend of dissemination for some DENV serotypes with a possible shift in genotype distribution; as recently observed in other Asian countries.
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Affiliation(s)
- Rodolphe Hamel
- MIVEGEC UMR 224, Université de Montpellier, IRD, CNRS, Montpellier, France.,Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | | | | | - Alexandra Dauvé
- Department of Entomology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Celeste Donato
- Department of Microbiology, Biomedicine Discovery Institute, Monash University, Clayton, Australia
| | - Julien Pompon
- MIVEGEC UMR 224, Université de Montpellier, IRD, CNRS, Montpellier, France.,Programme in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore, Singapore
| | - Dhanasekaran Vijaykrishna
- Department of Microbiology, Biomedicine Discovery Institute, Monash University, Clayton, Australia.,Programme in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore, Singapore
| | - Florian Liegeois
- MIVEGEC UMR 224, Université de Montpellier, IRD, CNRS, Montpellier, France
| | - Ronald Morales Vargas
- Department of Entomology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Natthanej Luplertlop
- Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Dorothée Missé
- MIVEGEC UMR 224, Université de Montpellier, IRD, CNRS, Montpellier, France
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17
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Suzuki K, Phadungsombat J, Nakayama EE, Saito A, Egawa A, Sato T, Rahim R, Hasan A, Lin MYC, Takasaki T, Rahman M, Shioda T. Genotype replacement of dengue virus type 3 and clade replacement of dengue virus type 2 genotype Cosmopolitan in Dhaka, Bangladesh in 2017. INFECTION GENETICS AND EVOLUTION 2019; 75:103977. [PMID: 31351235 DOI: 10.1016/j.meegid.2019.103977] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 06/24/2019] [Accepted: 07/22/2019] [Indexed: 01/18/2023]
Abstract
Dengue is a mosquito-borne disease that has spread to >100 countries and is caused by the dengue virus (DENV), which belongs to the Flavivirus genus of the family Flaviviridae. DENV comprises 4 serotypes (DENV-1 to -4), and each serotype is further divided into distinct genotypes. In India, it is reported that all 4 serotypes of DENV co-circulate. Although Bangladesh is a neighboring country of India, very few reports have published DENV sequence data for the country, especially after 2012. To understand the current distribution of DENV genotypes in Bangladesh, we determined the nucleotide sequences of envelope regions obtained from 58 DENV-positive patients diagnosed at Apollo Hospitals Dhaka during the period between September 2017 and February 2018. We found 5 DENV-1, 47 DENV-2, and 6 DENV-3 serotypes. A phylogenetic analysis of the obtained viral sequences revealed that DENV-3 genotype I was present instead of DENV-3 genotype II, which was predominant in Bangladesh between 2000 and 2009. Furthermore, we found two distinct lineages of the Cosmopolitan genotype of DENV-2, one of which was closely related to strains from Southeast Asia and has never been reported previously in Bangladesh. These results indicated that DENVs in Bangladesh have increased in genotypic diversity and suggest that the DENV genotypic shift observed in other Asian countries also might have been taking place in Bangladesh.
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Affiliation(s)
- Keita Suzuki
- Research Institute for Microbial Diseases, Osaka University, 3-1, Yamada-oka, Suita, Osaka 565-0871, Japan; TANAKA Kikinzoku Kogyo K.K., 2-73, Shinmachi, Hiratsuka, Kanagawa 254-0076, Japan
| | - Juthamas Phadungsombat
- Mahidol-Osaka Center for Infectious Diseases, Mahidol University, 420/6 Ratchawithi road, Ratchathewi, Bangkok 10400, Thailand
| | - Emi E Nakayama
- Research Institute for Microbial Diseases, Osaka University, 3-1, Yamada-oka, Suita, Osaka 565-0871, Japan.
| | - Akatsuki Saito
- Research Institute for Microbial Diseases, Osaka University, 3-1, Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Akio Egawa
- Research Institute for Microbial Diseases, Osaka University, 3-1, Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Tairyu Sato
- Research Institute for Microbial Diseases, Osaka University, 3-1, Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Rummana Rahim
- Apollo Hospitals Dhaka, Plot-81, Block-E, Bashundhara R/A, Dhaka 1229, Bangladesh
| | - Abu Hasan
- Apollo Hospitals Dhaka, Plot-81, Block-E, Bashundhara R/A, Dhaka 1229, Bangladesh
| | - Marco Yung-Cheng Lin
- Department of Medical Research, Mackay Memorial Hospital, No. 45, Minsheng Rd., Tamsui District, New Taipei City 25160, Taiwan
| | - Tomohiko Takasaki
- Kanagawa Prefectural Institute of Public Health, 1-3-1 Shimomachiya, Chigasaki, Kanagawa 253-0087, Japan
| | - Mizanur Rahman
- Apollo Hospitals Dhaka, Plot-81, Block-E, Bashundhara R/A, Dhaka 1229, Bangladesh
| | - Tatsuo Shioda
- Research Institute for Microbial Diseases, Osaka University, 3-1, Yamada-oka, Suita, Osaka 565-0871, Japan; Mahidol-Osaka Center for Infectious Diseases, Mahidol University, 420/6 Ratchawithi road, Ratchathewi, Bangkok 10400, Thailand
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Demok S, Endersby-Harshman N, Vinit R, Timinao L, Robinson LJ, Susapu M, Makita L, Laman M, Hoffmann A, Karl S. Insecticide resistance status of Aedes aegypti and Aedes albopictus mosquitoes in Papua New Guinea. Parasit Vectors 2019; 12:333. [PMID: 31269965 PMCID: PMC6609403 DOI: 10.1186/s13071-019-3585-6] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 06/27/2019] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Aedes aegypti and Ae. albopictus are important vectors of infectious diseases, especially those caused by arboviruses such as dengue, chikungunya and Zika. Aedes aegypti is very well adapted to urban environments, whereas Ae. albopictus inhabits more rural settings. Pyrethroid resistance is widespread in these vectors, but limited data exist from the Southwest Pacific Region, especially from Melanesia. While Aedes vector ecology is well documented in Australia, where incursion of Ae. albopictus and pyrethroid resistance have so far been prevented, almost nothing is known about Aedes populations in neighbouring Papua New Guinea (PNG). With pyrethroid resistance documented in parts of Indonesia but not in Australia, it is important to determine the distribution of susceptible and resistant Aedes populations in this region. METHODS The present study was aimed at assessing Aedes populations for insecticide resistance in Madang and Port Moresby, located on the north and south coasts of PNG, respectively. Mosquitoes were collected using ovitraps and reared in an insectary. Standard WHO bioassays using insecticide-treated filter papers were conducted on a total of 253 Ae. aegypti and 768 Ae. albopictus adult mosquitoes. Subsets of samples from both species (55 Ae. aegypti and 48 Ae. albopictus) were screened for knockdown resistance mutations in the voltage-sensitive sodium channel (Vssc) gene, the target site of pyrethroid insecticides. RESULTS High levels of resistance against pyrethroids were identified in Ae. aegypti from Madang and Port Moresby. Aedes albopictus exhibited susceptibility to pyrethroids, but moderate levels of resistance to DDT. Mutations associated with pyrethroid resistance were detected in all Ae. aegypti samples screened. Some genotypes found in the present study had been observed previously in Indonesia. No Vssc mutations associated with pyrethroid resistance were found in the Ae. albopictus samples. CONCLUSIONS To our knowledge, this is the first report of pyrethroid resistance in Ae. aegypti mosquitoes in PNG. Interestingly, usage of insecticides in PNG is low, apart from long-lasting insecticidal nets distributed for malaria control. Further investigations on how these resistant Ae. aegypti mosquito populations arose in PNG and how they are being sustained are warranted.
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Affiliation(s)
- Samuel Demok
- Vector-Borne Diseases Unit, PNG Institute of Medical Research, P.O. Box 378, Madang, 511 Madang Province Papua New Guinea
| | - Nancy Endersby-Harshman
- School of BioSciences, Bio21 Institute, The University of Melbourne, 30 Flemington Rd., Parkville, VIC 3010 Australia
| | - Rebecca Vinit
- Vector-Borne Diseases Unit, PNG Institute of Medical Research, P.O. Box 378, Madang, 511 Madang Province Papua New Guinea
| | - Lincoln Timinao
- Vector-Borne Diseases Unit, PNG Institute of Medical Research, P.O. Box 378, Madang, 511 Madang Province Papua New Guinea
- Australian Institute of Tropical Health and Medicine, James Cook University, 1/14-88 McGregor Road, Smithfield, QLD 4870 Australia
| | - Leanne J. Robinson
- Vector-Borne Diseases Unit, PNG Institute of Medical Research, P.O. Box 378, Madang, 511 Madang Province Papua New Guinea
- Burnet Institute, 85 Commercial Road, Melbourne, VIC 3004 Australia
| | - Melinda Susapu
- National Department of Health, Waigani Drive, P.O. Box 807, Port Moresby, Papua New Guinea
| | - Leo Makita
- National Department of Health, Waigani Drive, P.O. Box 807, Port Moresby, Papua New Guinea
| | - Moses Laman
- Vector-Borne Diseases Unit, PNG Institute of Medical Research, P.O. Box 378, Madang, 511 Madang Province Papua New Guinea
| | - Ary Hoffmann
- School of BioSciences, Bio21 Institute, The University of Melbourne, 30 Flemington Rd., Parkville, VIC 3010 Australia
| | - Stephan Karl
- Vector-Borne Diseases Unit, PNG Institute of Medical Research, P.O. Box 378, Madang, 511 Madang Province Papua New Guinea
- Australian Institute of Tropical Health and Medicine, James Cook University, 1/14-88 McGregor Road, Smithfield, QLD 4870 Australia
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Galarion MJ, Schwem B, Pangilinan C, Dela Tonga A, Petronio-Santos JA, Delos Reyes E, Destura R. Genotypic persistence of dengue virus in the Philippines. INFECTION GENETICS AND EVOLUTION 2019; 69:134-141. [PMID: 30682551 DOI: 10.1016/j.meegid.2019.01.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 01/14/2019] [Accepted: 01/15/2019] [Indexed: 11/16/2022]
Abstract
The Philippines is known to have one of the world's highest prevalences of dengue infection. The disease has been endemic in the country since 1956 and the severe form was first reported during an outbreak in Manila in 1954. Among all of the countries in the world, the Philippines had the highest case fatality rate from 2008 to 2012. With the increasing rate of international travel, the country is also considered one of the primary sources of imported dengue cases in non-endemic areas in Asia, Australia, and Europe. Despite this high prevalence, there is a dearth of literature describing the circulating strains in the Philippines at the genotype level. Using data from sequence databases, this study aimed to characterize all available Philippine sequences, at the molecular level. Capsid/pre-membrane (C/prM) junction gene and envelope (E) gene sequences of dengue serotypes 1, 2, 3 and 4 from 1956 to 2016 were used for phylogenetic analysis and genotypic identification. All four serotypes co-circulate in the country over the last 50 years with conspicuous genotypic characteristics. DENV-1 exhibited an apparent persistence of a single genotype since 1974. DENV-2 showed strong evidence of genotypic shift in 1999-2002 accompanied by a genotypic persistence thereafter. DENV-3 and DENV-4 displayed a temporal domination of a single genotype, with evidence of a minor co-circulating genotypic population. The persistence and pre-domination of specific DENV genotypes warrant continuous molecular surveillance for signs of genotypic shifts that can cause local outbreak events or an increased risk for severity.
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Affiliation(s)
- Ma Jowina Galarion
- National Institute of Molecular Biology and Biotechnology, National Institutes of Health, University of the Philippines Manila, Ermita, Manila, Philippines.
| | - Brian Schwem
- National Institute of Molecular Biology and Biotechnology, National Institutes of Health, University of the Philippines Manila, Ermita, Manila, Philippines
| | - Coleen Pangilinan
- National Institute of Molecular Biology and Biotechnology, National Institutes of Health, University of the Philippines Manila, Ermita, Manila, Philippines
| | - Angelo Dela Tonga
- National Institute of Molecular Biology and Biotechnology, National Institutes of Health, University of the Philippines Manila, Ermita, Manila, Philippines
| | - Joy Ann Petronio-Santos
- Biological Sciences Research and Services Laboratory, Natural Sciences Research Institute, University of the Philippines Diliman, Diliman, Quezon City, Philippines
| | - Erlinda Delos Reyes
- The Medical City Hospital and Infectious Disease Practice and Innovations, Pasig City, Philippines
| | - Raul Destura
- National Institute of Molecular Biology and Biotechnology, National Institutes of Health, University of the Philippines Manila, Ermita, Manila, Philippines; The Medical City Hospital and Infectious Disease Practice and Innovations, Pasig City, Philippines; Philippine Genome Center, University of the Philippines System, Diliman, Quezon City, Philippines
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First Complete Genome Sequences of Dengue Virus Serotype 2 Strains from the Solomon Islands and Vanuatu. Microbiol Resour Announc 2019; 8:MRA01360-18. [PMID: 30643881 PMCID: PMC6328654 DOI: 10.1128/mra.01360-18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Accepted: 11/26/2018] [Indexed: 11/20/2022] Open
Abstract
Isolates of dengue virus serotype 2 (DENV-2) were recovered from a female resident of the Solomon Islands in 2016 and another female patient who had traveled from Vanuatu to Australia in 2017. Here, we describe the first complete genome sequences of DENV-2 strains from Vanuatu and the Solomon Islands. Isolates of dengue virus serotype 2 (DENV-2) were recovered from a female resident of the Solomon Islands in 2016 and another female patient who had traveled from Vanuatu to Australia in 2017. Here, we describe the first complete genome sequences of DENV-2 strains from Vanuatu and the Solomon Islands.
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Mavian C, Dulcey M, Munoz O, Salemi M, Vittor AY, Capua I. Islands as Hotspots for Emerging Mosquito-Borne Viruses: A One-Health Perspective. Viruses 2018; 11:E11. [PMID: 30585228 PMCID: PMC6356932 DOI: 10.3390/v11010011] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 12/18/2018] [Accepted: 12/18/2018] [Indexed: 02/08/2023] Open
Abstract
During the past ten years, an increasing number of arbovirus outbreaks have affected tropical islands worldwide. We examined the available literature in peer-reviewed journals, from the second half of the 20th century until 2018, with the aim of gathering an overall picture of the emergence of arboviruses in these islands. In addition, we included information on environmental and social drivers specific to island setting that can facilitate the emergence of outbreaks. Within the context of the One Health approach, our review highlights how the emergence of arboviruses in tropical islands is linked to the complex interplay between their unique ecological settings and to the recent changes in local and global sociodemographic patterns. We also advocate for greater coordination between stakeholders in developing novel prevention and mitigation approaches for an intractable problem.
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Affiliation(s)
- Carla Mavian
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL 32611, USA.
- Emerging Pathogens Institute University of Florida, Gainesville, FL 32611, USA.
| | - Melissa Dulcey
- Emerging Pathogens Institute University of Florida, Gainesville, FL 32611, USA.
- Department of Environmental and Global Health, College of Public Health and Health Professions, University of Florida, Gainesville, FL 32611, USA.
| | - Olga Munoz
- Emerging Pathogens Institute University of Florida, Gainesville, FL 32611, USA.
- Department of Environmental and Global Health, College of Public Health and Health Professions, University of Florida, Gainesville, FL 32611, USA.
- One Health Center of Excellence, University of Florida, Gainesville, FL 32611, USA.
| | - Marco Salemi
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL 32611, USA.
- Emerging Pathogens Institute University of Florida, Gainesville, FL 32611, USA.
| | - Amy Y Vittor
- Emerging Pathogens Institute University of Florida, Gainesville, FL 32611, USA.
- Division of Infectious Diseases and Global Medicine, Department of Medicine, College of Medicine, University of Florida, Gainesville, FL 32611, USA.
| | - Ilaria Capua
- Emerging Pathogens Institute University of Florida, Gainesville, FL 32611, USA.
- One Health Center of Excellence, University of Florida, Gainesville, FL 32611, USA.
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Phadungsombat J, Lin MYC, Srimark N, Yamanaka A, Nakayama EE, Moolasart V, Suttha P, Shioda T, Uttayamakul S. Emergence of genotype Cosmopolitan of dengue virus type 2 and genotype III of dengue virus type 3 in Thailand. PLoS One 2018; 13:e0207220. [PMID: 30419004 PMCID: PMC6231660 DOI: 10.1371/journal.pone.0207220] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 10/26/2018] [Indexed: 01/27/2023] Open
Abstract
Dengue is a mosquito-borne disease that has spread to over 100 countries. Dengue fever is caused by dengue virus (DENV), which belongs to the Flavivirus genus of the family Flaviviridae. DENV comprises 4 serotypes (DENV-1 to DENV-4), and each serotype is divided into distinct genotypes. Thailand is an endemic area where all 4 serotypes of DENV co-circulate. To understand the current genotype distribution of DENVs in Thailand, we enrolled 100 cases of fever with dengue-like symptoms at the Bamrasnaradura Infectious Diseases Institute during 2016–2017. Among them, 37 cases were shown to be dengue-positive by real-time PCR. We were able to isolate DENVs from 21 cases, including 1 DENV-1, 8 DENV-2, 4 DENV-3, and 8 DENV-4. To investigate the divergence of the viruses, RNA was extracted from isolated DENVs and viral near-whole genome sequences were determined. Phylogenetic analysis of the obtained viral sequences revealed that DENV-2 genotype Cosmopolitan was co-circulating with DENV-2 genotype Asian-I, the previously predominating genotype in Thailand. Furthermore, DENV-3 genotype III was found instead of DENV-3 genotype II. The DENV-2 Cosmopolitan and DENV-3 genotype III found in Thailand were closely related to the respective strains found in nearby countries. These results indicated that DENVs in Thailand have increased in genotypic diversity, and suggested that the DENV genotypic shift observed in other Asian countries also might be taking place in Thailand.
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Affiliation(s)
- Juthamas Phadungsombat
- Mahidol-Osaka Center for Infectious Diseases (MOCID), Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | | | - Narinee Srimark
- Mahidol-Osaka Center for Infectious Diseases (MOCID), Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Atsushi Yamanaka
- Mahidol-Osaka Center for Infectious Diseases (MOCID), Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Emi E. Nakayama
- Mahidol-Osaka Center for Infectious Diseases (MOCID), Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
- Research Institute for Microbial Diseases, Osaka University, Suita, Japan
| | - Visal Moolasart
- Bamrasnaradura Infectious Diseases Institute, Nonthaburi, Thailand
| | - Patama Suttha
- Bamrasnaradura Infectious Diseases Institute, Nonthaburi, Thailand
| | - Tatsuo Shioda
- Mahidol-Osaka Center for Infectious Diseases (MOCID), Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
- Research Institute for Microbial Diseases, Osaka University, Suita, Japan
- * E-mail:
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First Reported Complete Genome Sequence of a Dengue Virus Serotype 4 Strain from Papua New Guinea. Microbiol Resour Announc 2018; 7:MRA01082-18. [PMID: 30533658 PMCID: PMC6256681 DOI: 10.1128/mra.01082-18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 08/31/2018] [Indexed: 11/23/2022] Open
Abstract
A male patient in his 50s who traveled from Papua New Guinea (PNG) to Australia in 2016 was diagnosed with a dengue virus serotype 4 (DENV-4) infection, and the virus was isolated from his acute-phase serum. Here, we describe the first complete genome sequence of a DENV-4 strain from PNG. A male patient in his 50s who traveled from Papua New Guinea (PNG) to Australia in 2016 was diagnosed with a dengue virus serotype 4 (DENV-4) infection, and the virus was isolated from his acute-phase serum. Here, we describe the first complete genome sequence of a DENV-4 strain from PNG.
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Pyke AT, Gunn W, Taylor C, Mackay IM, McMahon J, Jelley L, Waite B, May F. On the Home Front: Specialised Reference Testing for Dengue in the Australasian Region. Trop Med Infect Dis 2018; 3:E75. [PMID: 30274471 PMCID: PMC6161173 DOI: 10.3390/tropicalmed3030075] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 06/29/2018] [Accepted: 07/10/2018] [Indexed: 11/30/2022] Open
Abstract
Reference laboratories are vital for disease control and interpreting the complexities and impact of emerging pathogens. The role of these centralized facilities extends beyond routine screening capabilities to provide rapid, specific, and accurate diagnoses, advanced data analysis, consultation services, and sophisticated disease surveillance and monitoring. Within the Australasian region, the Public Health Virology Laboratory (PHV), Forensic and Scientific Services, Department of Health, Queensland Government, Australia, and the Institute of Environmental Science and Research Limited (ESR), New Zealand (NZ) perform specialised reference testing and surveillance for dengue viruses (DENVs) and other emerging arthropod-borne viruses (arboviruses), including chikungunya virus (CHIKV) and Zika virus (ZIKV). With a focus on DENV, we review the reference testing performed by PHV (2005 to 2017) and ESR (2008 to 2017). We also describe how the evolution and expansion of reference-based methodologies and the adoption of new technologies have provided the critical elements of preparedness and early detection that complement frontline public health control efforts and limit the spread of arboviruses within Australasia.
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Affiliation(s)
- Alyssa T Pyke
- Public Health Virology Laboratory, Forensic and Scientific Services, Coopers Plains, QLD 4108, Australia.
| | - Wendy Gunn
- Institute of Environmental Science and Research Limited, Wallaceville, 5018 Upper Hutt, New Zealand.
| | - Carmel Taylor
- Public Health Virology Laboratory, Forensic and Scientific Services, Coopers Plains, QLD 4108, Australia.
| | - Ian M Mackay
- Public Health Virology Laboratory, Forensic and Scientific Services, Coopers Plains, QLD 4108, Australia.
- Child Health Research Centre, The University of Queensland, South Brisbane, QLD 4101, Australia.
| | - Jamie McMahon
- Public Health Virology Laboratory, Forensic and Scientific Services, Coopers Plains, QLD 4108, Australia.
| | - Lauren Jelley
- Institute of Environmental Science and Research Limited, Wallaceville, 5018 Upper Hutt, New Zealand.
| | - Ben Waite
- Institute of Environmental Science and Research Limited, Wallaceville, 5018 Upper Hutt, New Zealand.
| | - Fiona May
- Metro North Public Health Unit, Metro North Hospital and Health Service, Queensland Health, Windsor, QLD 4030, Australia.
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Pyke AT. The origins of dengue outbreaks in northern Queensland, Australia, 1990–2017. MICROBIOLOGY AUSTRALIA 2018. [DOI: 10.1071/ma18027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Dengue is one of the world's major infectious mosquito-borne diseases and although not endemic in Australia, is a significant public health concern. Queensland is vulnerable to outbreaks of dengue viruses (DENVs) and indeed, due to endemic populations of the mosquito vector Aedes aeypti, has been the only state since the 1950s to record local transmission. Determining DENV outbreak origins, and monitoring strain movement and diversity greatly assists outbreak management. It also confirms epidemiological links and potentially identifies incursions of rare or highly pathogenic viruses. There have been 73 DENV outbreaks recorded in northern Queensland within the past three decades and it has been the role of Public Health Virology, Department of Health, Queensland Government, to provide DENV genotyping and characterisation to facilitate this essential surveillance. This review summarises the likely origins of the recent northern Queensland outbreaks and describes the complex dynamics of DENV genotypic diversity that have characterised local transmission events.
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