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Thongmee T, Chansaenroj J, Klinfueng S, Aeemjinda R, Wanlapakorn N, Poovorawan Y. Seroprevalence of antibodies against varicella zoster virus across all age groups during the post-COVID-19 pandemic period in Chonburi Province, Thailand. Hum Vaccin Immunother 2024; 20:2367283. [PMID: 39051458 PMCID: PMC11275523 DOI: 10.1080/21645515.2024.2367283] [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: 04/24/2024] [Revised: 05/29/2024] [Accepted: 06/10/2024] [Indexed: 07/27/2024] Open
Abstract
As of 2024, Thailand has not incorporated the varicella-zoster virus (VZV) vaccine into the Expanded Program on Immunization (EPI). This study aimed to evaluate VZV seroprevalence across all age groups in Chonburi Province, Thailand, during the post-COVID-19 era, and to support the development of a vaccination plan against VZV. A total of 950 participants were enrolled from October 2022 to January 2023. VZV antibody levels were measured using ELISA kits (EUROIMMUN, Lübeck, Germany), with seropositivity set at ≥110 IU/L. The overall VZV seropositivity rate was 64.8%, similar to rates in 1994 and 2014. However, seropositivity rates for the 5-9, 10-14, and 15-19 age groups were significantly higher in the 1994 study, and for the 10-14 and 15-19 age groups in the 2014 study, indicating a declining trend among young Thai individuals. The seropositivity rate increased with age, with a seroprevalence exceeding 80% in individuals aged 30 years and older. Our study found a significant association between the history of varicella and seropositivity. Thus, a positive history may indicate immunity. In conclusion, a significant portion of Thai adolescents are still vulnerable to varicella, highlighting the crucial role of vaccination in averting serious illness.
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Affiliation(s)
- Thanunrat Thongmee
- Center of Excellence in Clinical Virology, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Jira Chansaenroj
- Center of Excellence in Clinical Virology, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Sirapa Klinfueng
- Center of Excellence in Clinical Virology, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Ratchadawan Aeemjinda
- Center of Excellence in Clinical Virology, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Nasamon Wanlapakorn
- Center of Excellence in Clinical Virology, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Yong Poovorawan
- Center of Excellence in Clinical Virology, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- FRS(T), The Royal Society of Thailand, Sanam Sueapa, Dusit, Bangkok, Thailand
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2
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Kombe Kombe AJ, Xie J, Zahid A, Ma H, Xu G, Deng Y, Nsole Biteghe FA, Mohammed A, Dan Z, Yang Y, Feng C, Zeng W, Chang R, Zhu K, Zhang S, Jin T. Detection of Circulating VZV-Glycoprotein E-Specific Antibodies by Chemiluminescent Immunoassay (CLIA) for Varicella-Zoster Diagnosis. Pathogens 2022; 11:pathogens11010066. [PMID: 35056014 PMCID: PMC8778750 DOI: 10.3390/pathogens11010066] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 11/18/2021] [Accepted: 11/23/2021] [Indexed: 02/01/2023] Open
Abstract
Varicella and herpes zoster are mild symptoms-associated diseases caused by varicella–zoster virus (VZV). They often cause severe complications (disseminated zoster), leading to death when diagnoses and treatment are delayed. However, most commercial VZV diagnostic tests have low sensitivity, and the most sensitive tests are unevenly available worldwide. Here, we developed and validated a highly sensitive VZV diagnostic kit based on the chemiluminescent immunoassay (CLIA) approach. VZV-glycoprotein E (gE) was used to develop a CLIA diagnostic approach for detecting VZV-specific IgA, IgG, and IgM. The kit was tested with 62 blood samples from 29 VZV-patients classified by standard ELISA into true-positive and equivocal groups and 453 blood samples from VZV-negative individuals. The diagnostic accuracy of the CLIA kit was evaluated by receiver-operating characteristic (ROC) analysis. The relationships of immunoglobulin-isotype levels between the two groups and with patient age ranges were analyzed. Overall, the developed CLIA-based diagnostic kit demonstrated the detection of VZV-specific immunoglobulin titers depending on sample dilution. From the ELISA-based true-positive patient samples, the diagnostic approach showed sensitivities of 95.2%, 95.2%, and 97.6% and specificities of 98.0%, 100%, and 98.9% for the detection of VZV-gE-specific IgA, IgG, and IgM, respectively. Combining IgM to IgG and IgA detection improved diagnostic accuracy. Comparative analyses on diagnosing patients with equivocal results displaying very low immunoglobulin titers revealed that the CLIA-based diagnostic approach is overall more sensitive than ELISA. In the presence of typical VZV symptoms, CLIA-based detection of high titer of IgM and low titer of IgA/IgG suggested the equivocal patients experienced primary VZV infection. Furthermore, while no difference in IgA/IgG level was found regarding patient age, IgM level was significantly higher in young adults. The CLIA approach-based detection kit for diagnosing VZV-gE-specific IgA, IgG, and IgM is simple, suitable for high-throughput routine analysis situations, and provides enhanced specificity compared to ELISA.
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Affiliation(s)
- Arnaud John Kombe Kombe
- Department of Dermatology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, China; (A.J.K.K.); (J.X.); (R.C.); (K.Z.)
| | - Jiajia Xie
- Department of Dermatology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, China; (A.J.K.K.); (J.X.); (R.C.); (K.Z.)
| | - Ayesha Zahid
- Hefei National Laboratory for Physical Sciences at Microscale, The CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230026, China; (A.Z.); (H.M.); (G.X.); (Y.D.); (A.M.); (Z.D.); (Y.Y.); (C.F.); (W.Z.)
| | - Huan Ma
- Hefei National Laboratory for Physical Sciences at Microscale, The CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230026, China; (A.Z.); (H.M.); (G.X.); (Y.D.); (A.M.); (Z.D.); (Y.Y.); (C.F.); (W.Z.)
| | - Guangtao Xu
- Hefei National Laboratory for Physical Sciences at Microscale, The CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230026, China; (A.Z.); (H.M.); (G.X.); (Y.D.); (A.M.); (Z.D.); (Y.Y.); (C.F.); (W.Z.)
| | - Yiyu Deng
- Hefei National Laboratory for Physical Sciences at Microscale, The CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230026, China; (A.Z.); (H.M.); (G.X.); (Y.D.); (A.M.); (Z.D.); (Y.Y.); (C.F.); (W.Z.)
| | - Fleury Augustin Nsole Biteghe
- Gabonese Scientific Research Consortium, Libreville, Gabon;
- Department of Radiation Oncology, Cedars Sinai Hospital, Los Angeles, CA 90048, USA
| | - Ahmed Mohammed
- Hefei National Laboratory for Physical Sciences at Microscale, The CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230026, China; (A.Z.); (H.M.); (G.X.); (Y.D.); (A.M.); (Z.D.); (Y.Y.); (C.F.); (W.Z.)
| | - Zhao Dan
- Hefei National Laboratory for Physical Sciences at Microscale, The CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230026, China; (A.Z.); (H.M.); (G.X.); (Y.D.); (A.M.); (Z.D.); (Y.Y.); (C.F.); (W.Z.)
| | - Yunru Yang
- Hefei National Laboratory for Physical Sciences at Microscale, The CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230026, China; (A.Z.); (H.M.); (G.X.); (Y.D.); (A.M.); (Z.D.); (Y.Y.); (C.F.); (W.Z.)
| | - Chen Feng
- Hefei National Laboratory for Physical Sciences at Microscale, The CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230026, China; (A.Z.); (H.M.); (G.X.); (Y.D.); (A.M.); (Z.D.); (Y.Y.); (C.F.); (W.Z.)
| | - Weihong Zeng
- Hefei National Laboratory for Physical Sciences at Microscale, The CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230026, China; (A.Z.); (H.M.); (G.X.); (Y.D.); (A.M.); (Z.D.); (Y.Y.); (C.F.); (W.Z.)
| | - Ruixue Chang
- Department of Dermatology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, China; (A.J.K.K.); (J.X.); (R.C.); (K.Z.)
| | - Keyuan Zhu
- Department of Dermatology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, China; (A.J.K.K.); (J.X.); (R.C.); (K.Z.)
| | - Siping Zhang
- Department of Dermatology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, China; (A.J.K.K.); (J.X.); (R.C.); (K.Z.)
- Correspondence: (S.Z.); (T.J.); Tel.: +86-0551-62283151 (S.Z.); +86-551-63600720 (T.J.)
| | - Tengchuan Jin
- Department of Dermatology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, China; (A.J.K.K.); (J.X.); (R.C.); (K.Z.)
- Hefei National Laboratory for Physical Sciences at Microscale, The CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230026, China; (A.Z.); (H.M.); (G.X.); (Y.D.); (A.M.); (Z.D.); (Y.Y.); (C.F.); (W.Z.)
- CAS Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai 200031, China
- Correspondence: (S.Z.); (T.J.); Tel.: +86-0551-62283151 (S.Z.); +86-551-63600720 (T.J.)
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3
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Rice P. Ultraviolet Radiation, Not Temperature, Has Driven the Evolution of Varicella Zoster Virus. J Infect Dis 2021; 224:1984. [PMID: 33964170 DOI: 10.1093/infdis/jiab251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 05/05/2021] [Indexed: 11/14/2022] Open
Affiliation(s)
- Philip Rice
- Retired Consultant Virologist; last post at Norfolk and Norwich University Hospitals NHS Trust, Norwich, Norfolk, United Kingdom
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Pontremoli C, Forni D, Clerici M, Cagliani R, Sironi M. Possible European Origin of Circulating Varicella Zoster Virus Strains. J Infect Dis 2021; 221:1286-1294. [PMID: 31051029 DOI: 10.1093/infdis/jiz227] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 05/02/2019] [Indexed: 11/13/2022] Open
Abstract
Varicella zoster virus (VZV) is the causative agent of chickenpox and shingles. The geographic distribution of VZV clades was taken as evidence that VZV migrated out of Africa with human populations. We show that extant VZV strains most likely originated in Europe and not in Africa. Europe was also identified as the ancestral location for most internal nodes of the VZV phylogeny, including the ancestor of clade 5 strains. We also show that strains from clades 1, 2, 3, and 5 derived a major proportion of their ancestry from each of 4 ancestral populations. Conversely, viruses from other clades displayed variable levels of admixture. Some low-level admixture was also observed for clade 5 genomes, but only for non-African viruses. This pattern indicates that the clade 5 VZV strains do not represent recent introductions from Africa due to migratory fluxes. These data have also relevance for the definition and classification of VZV clades.
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Affiliation(s)
- Chiara Pontremoli
- Istituto di ricovero e cura a carattere scientifico (IRCCS) E. Medea, Bioinformatics, Bosisio Parini, Milan, Italy
| | - Diego Forni
- Istituto di ricovero e cura a carattere scientifico (IRCCS) E. Medea, Bioinformatics, Bosisio Parini, Milan, Italy
| | - Mario Clerici
- Department of Physiopathology and Transplantation, University of Milan, Milan, Italy.,IRCCS Fondazione Don Carlo Gnocchi, Milan, Italy
| | - Rachele Cagliani
- Istituto di ricovero e cura a carattere scientifico (IRCCS) E. Medea, Bioinformatics, Bosisio Parini, Milan, Italy
| | - Manuela Sironi
- Istituto di ricovero e cura a carattere scientifico (IRCCS) E. Medea, Bioinformatics, Bosisio Parini, Milan, Italy
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5
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Vos RA, Mollema L, van Boven M, van Lier A, Smits G, Janga-Jansen AVA, Baboe-Kalpoe S, Hulshof K, Stienstra Y, van der Klis FRM, de Melker HE. High varicella zoster virus susceptibility in Caribbean island populations: Implications for vaccination. Int J Infect Dis 2020; 94:16-24. [PMID: 32112964 DOI: 10.1016/j.ijid.2020.02.047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 02/20/2020] [Accepted: 02/20/2020] [Indexed: 10/24/2022] Open
Abstract
OBJECTIVES Varicella zoster virus (VZV) infection is reported regularly among adolescents and adults in Caribbean island populations. The disease more often runs a severe course among these populations, causing a substantial burden. The aim of this sero-epidemiological study was to obtain an insight into VZV susceptibility and its determinants in island populations of the Caribbean Netherlands (CN). METHODS Participants from Bonaire, St. Eustatius, and Saba (n = 1829, aged 0-90 years) donated a blood sample and completed a questionnaire. VZV-specific IgG antibodies were determined using a bead-based multiplex immunoassay. Risk factors were analysed using a logistic regression model. RESULTS Overall seroprevalence in CN was 78%, being lowest on St. Eustatius (73%) and highest on Bonaire and Saba (79%). Seropositivity increased gradually with age, with 60% and 80% at ages 10 years and 30 years, respectively, and ranging between 80% and 90% thereafter. Higher odds for VZV seronegativity were seen among persons who were born in CN or had resided there since early childhood, and among single-person households. CONCLUSIONS VZV susceptibility is relatively high among adolescents and adults in CN. In order to reduce the burden of VZV-related disease in these populations, routine varicella vaccination is recommended. As data are scarce, the study findings can serve as a blueprint for the epidemiology in tropical regions.
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Affiliation(s)
- Regnerus A Vos
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Antonie van Leeuwenhoeklaan 9, 3720 MA Bilthoven, The Netherlands; Department of Internal Medicine/Infectious Diseases, University Medical Centre/University of Groningen, Groningen, The Netherlands.
| | - Liesbeth Mollema
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Antonie van Leeuwenhoeklaan 9, 3720 MA Bilthoven, The Netherlands.
| | - Michiel van Boven
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Antonie van Leeuwenhoeklaan 9, 3720 MA Bilthoven, The Netherlands.
| | - Alies van Lier
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Antonie van Leeuwenhoeklaan 9, 3720 MA Bilthoven, The Netherlands.
| | - Gaby Smits
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Antonie van Leeuwenhoeklaan 9, 3720 MA Bilthoven, The Netherlands.
| | - Alcira V A Janga-Jansen
- Department of Public Health, Public Entity Bonaire, Kaya Neerlandia 41, Kralendijk, Bonaire, Caribbean Netherlands, The Netherlands.
| | - Sharda Baboe-Kalpoe
- Department of Public Health, Public Entity St. Eustatius, Cottageroad z/n, Oranjestad, St. Eustatius, Caribbean Netherlands, The Netherlands.
| | - Koen Hulshof
- Department of Public Health, Public Entity Saba, The Bottom, Saba, Caribbean Netherlands, The Netherlands.
| | - Ymkje Stienstra
- Department of Internal Medicine/Infectious Diseases, University Medical Centre/University of Groningen, Groningen, The Netherlands.
| | - Fiona R M van der Klis
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Antonie van Leeuwenhoeklaan 9, 3720 MA Bilthoven, The Netherlands.
| | - Hester E de Melker
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Antonie van Leeuwenhoeklaan 9, 3720 MA Bilthoven, The Netherlands.
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6
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Breuer J. Molecular Genetic Insights Into Varicella Zoster Virus (VZV), the vOka Vaccine Strain, and the Pathogenesis of Latency and Reactivation. J Infect Dis 2019; 218:S75-S80. [PMID: 30247591 DOI: 10.1093/infdis/jiy279] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Genetic tools for molecular typing of varicella zoster virus (VZV) have been used to understand the spread of virus, to differentiate wild-type and vaccine strains, and to understand the natural history of VZV infection in its cognate host. Molecular genetics has identified 7 clades of VZV (1-6 and 9), with 2 more mooted. Differences between the vOka vaccine strain and wild-type VZVs have been used to distinguish the cause of postimmunization events and to provide insight into the natural history of VZV infections. Importantly molecular genetics has shown that reinfection with establishment of latency by the reinfecting strain is common, that dual infections with different viruses can occur, and that reactivation of the superinfecting genotype can both occur. Whole-genome sequencing of the vOka vaccine has been used to show that vesicles form from a single virion, that latency is established within a few days of inoculation, and that all vaccine strains are capable of establishing latency and reactivating. Novel molecular tools have characterized the transcripts expressed during latent infection in vitro.
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Affiliation(s)
- Judith Breuer
- Division of Infection and Immunity, University College London, United Kingdom
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7
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Leung J, McCollum AM, Radford K, Hughes C, Lopez AS, Guagliardo SAJ, Nguete B, Likafi T, Kabamba J, Malekani J, Shongo Lushima R, Pukuta E, Karhemere S, Muyembe Tamfum JJ, Reynolds MG, Wemakoy Okitolonda E, Schmid DS, Marin M. Varicella in Tshuapa Province, Democratic Republic of Congo, 2009-2014. Trop Med Int Health 2019; 24:839-848. [PMID: 31062445 PMCID: PMC8786670 DOI: 10.1111/tmi.13243] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
OBJECTIVE To describe varicella cases in Tshuapa Province of the Democratic Republic of the Congo identified during monkeypox surveillance. METHODS Demographic, clinical and epidemiological data were collected from each suspected monkeypox case 2009-2014. Samples were tested by PCR for both Orthopoxviruses and varicella-zoster virus (VZV); a subset of VZV-positive samples was genotyped. We defined a varicella case as a rash illness with laboratory-confirmed VZV. RESULTS There were 366 varicella cases were identified; 66% were ≤19 years old. Most patients had non-typical varicella rash with lesions reported as the same size and stage of evolution (86%), deep and profound (91%), on palms of hands and/or soles of feet (86%) and not itchy (49%). Many had non-typical signs and symptoms, such as lymphadenopathy (70%) and sensitivity to light (23%). A higher proportion of persons aged ≥20 years than persons aged ≤19 years had ≥50 lesions (79% vs. 65%, P = 0.007) and were bedridden (15% vs. 9%, P = 0.056). All VZV isolates genotyped from 79 varicella cases were clade 5. During the surveillance period, one possible VZV-related death occurred in a 7-year-old child. CONCLUSIONS A large proportion of patients presented with non-typical varicella rash and clinical signs and symptoms, highlighting challenges identifying varicella in an area with endemic monkeypox. Continued surveillance and laboratory diagnosis will help in rapid identification and control of both monkeypox and varicella and improve our understanding of varicella epidemiology in Africa.
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Affiliation(s)
- Jessica Leung
- National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention Atlanta GA USA
| | - Andrea M. McCollum
- National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta GA USA
| | - Kay Radford
- National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention Atlanta GA USA
| | - Christine Hughes
- National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta GA USA
| | - Adriana S Lopez
- National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention Atlanta GA USA
| | - Sarah Anne J. Guagliardo
- National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta GA USA
- Epidemic Intelligence Service, Centers for Disease Control and Prevention, 1600 Clifton Rd, Atlanta, GA, 30333, United States
| | - Beatrice Nguete
- Kinshasa School of Public Health, Kinshasa, Democratic Republic of Congo
| | - Toutou Likafi
- Kinshasa School of Public Health, Kinshasa, Democratic Republic of Congo
| | - Joelle Kabamba
- U.S. Centers for Disease Control and Prevention, Kinshasa, Democratic Republic of Congo
| | - Jean Malekani
- University of Kinshasa, Department of Biology, Kinshasa, Democratic Republic of Congo
| | | | - Elisabeth Pukuta
- Institut National de Recherche Biomédicale, Kinshasa, Democratic Republic of Congo
| | - Stomy Karhemere
- Institut National de Recherche Biomédicale, Kinshasa, Democratic Republic of Congo
| | | | - Mary G. Reynolds
- National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta GA USA
| | | | - D Scott Schmid
- National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention Atlanta GA USA
| | - Mona Marin
- National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention Atlanta GA USA
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8
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Breuer J. The Origin and Migration of Varicella Zoster Virus Strains. J Infect Dis 2019; 221:1213-1215. [DOI: 10.1093/infdis/jiz232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 05/02/2019] [Indexed: 11/13/2022] Open
Affiliation(s)
- Judith Breuer
- Division of Infection and Immunity, University College London, United Kingdom
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9
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Rice ME, Bannerman M, Marin M, Lopez AS, Lewis MM, Stamatakis CE, Regan JJ. Maritime varicella illness and death reporting, U.S., 2010-2015. Travel Med Infect Dis 2018; 23:27-33. [PMID: 29621623 PMCID: PMC6624850 DOI: 10.1016/j.tmaid.2018.04.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 03/22/2018] [Accepted: 04/01/2018] [Indexed: 11/16/2022]
Abstract
BACKGROUND Ships destined for, or departing from, U.S. ports of entry must report certain signs and symptoms of potentially communicable diseases of public health interest among travelers to the Division of Global Migration and Quarantine (DGMQ) at the Centers for Disease Control and Prevention. METHODS We reviewed ships' varicella case and outbreak reports from January 2010 through December 2015. RESULTS DGMQ received 967 reports of varicella and 13 reports of herpes zoster. Most varicella case-patients were 20-49 years of age (84.7%, 472/557) and were cruise ship crew members (78.4%, 758/967). Most often, cruise ship crew member case-patients were born in or held passports from Indonesia (21.7%, 80/369), Philippines (17.6%, 65/369), or India (17.3%, 64/369). Ninety-nine varicella outbreaks were reported, including 439 varicella cases and one herpes zoster case; 97 (98.0%) outbreaks occurred on cruise ships, and 90.2% of associated cases were among crew members (397/440). Most varicella cases were in crew members, who are adults often from tropical regions where varicella immunity is acquired later in childhood or young adulthood or without varicella vaccination programs. CONCLUSION Varicella vaccination as appropriate for susceptible travelers, particularly crew members, before maritime travel may decrease risk of varicella infection and prevent outbreaks on ships.
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Affiliation(s)
- Marion E Rice
- Division of Global Migration and Quarantine (DGMQ), Centers for Disease Control and Prevention (CDC), 1600 Clifton Road NE, Atlanta, GA 30329-4018, United States; Emory University, Rollins School of Public Health, Atlanta, GA, United States.
| | | | - Mona Marin
- Division of Viral Diseases (DVD), CDC, 1600 Clifton Road NE, Atlanta, GA 30329-4018, United States.
| | - Adriana S Lopez
- Division of Viral Diseases (DVD), CDC, 1600 Clifton Road NE, Atlanta, GA 30329-4018, United States.
| | - Melissa M Lewis
- Division of Global Migration and Quarantine (DGMQ), Centers for Disease Control and Prevention (CDC), 1600 Clifton Road NE, Atlanta, GA 30329-4018, United States.
| | - Caroline E Stamatakis
- Division of Global Migration and Quarantine (DGMQ), Centers for Disease Control and Prevention (CDC), 1600 Clifton Road NE, Atlanta, GA 30329-4018, United States; Council of State and Territorial Epidemiologists, Atlanta, GA, USA.
| | - Joanna J Regan
- Division of Global Migration and Quarantine (DGMQ), Centers for Disease Control and Prevention (CDC), 1600 Clifton Road NE, Atlanta, GA 30329-4018, United States.
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10
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Denny JT, Rocke ZM, McRae VA, Denny JE, Fratzola CH, Ibrar S, Bonitz J, Tse JT, Cohen S, Mellender SJ, Kiss GK. Varicella Pneumonia: Case Report and Review of a Potentially Lethal Complication of a Common Disease. J Investig Med High Impact Case Rep 2018; 6:2324709618770230. [PMID: 29707592 PMCID: PMC5912273 DOI: 10.1177/2324709618770230] [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: 12/14/2017] [Revised: 03/06/2018] [Accepted: 03/18/2018] [Indexed: 01/31/2023] Open
Abstract
Varicella zoster virus causes varicella (chickenpox). It can be reactivated endogenously many years later to cause herpes zoster (shingles). Although varicella is usually a benign disease in healthy children, it resulted in over 11 000 hospitalizations and over 100 deaths every year, in all ages, in the United States. Morbidity was considerably worse in older teenagers and adults. Between 5% and 15% of cases of adult chickenpox will produce some form of pulmonary illness. Progression to pneumonia risk factors include pregnancy, age, smoking, chronic obstructive pulmonary disease, and immunosuppression. Typically, pulmonary symptoms occur 1 to 6 days after varicella zoster infection. They often include cough, fever, and dyspnea. Treatment is a 7-day course of intravenous acyclovir for varicella pneumonia. Early intervention may modify the course of this complication. This review illustrates practical features with a case of a 34-year-old female with severe varicella pneumonia. Despite the lack of significant past medical history and absence of immunosuppression, her pneumonia worsened and by using continuous positive airway pressure mask, intubation was avoided. More important, the radiographic progression of severe varicella pneumonia is shown. This highlights how a common disease of varicella can progress in an adult and manifest with significant organ malfunction.
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Affiliation(s)
| | - Zoe M Rocke
- St. George's University, St. George, Grenada
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11
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Abstract
BACKGROUND Varicella zoster virus (VZV) causes both varicella (chickenpox) and herpes zoster (shingles) and is associated with significant global morbidity. Most epidemiological data on VZV come from high-income countries, and to date there are limited data on the burden of VZV in Africa. METHODS We assessed the seroprevalence of VZV antibodies among children in the Democratic Republic of Congo in collaboration with the 2013-2014 Demographic and Health Survey. Dried blood spot samples collected from children 6-59 months of age were run on Dynex™ Technologies Multiplier FLEX® chemiluminescent immunoassay platform to assess serologic response. Multivariate logistic regression was then used to determine risk factors for VZV seropositivity. RESULTS Serologic and survey data were matched for 7,195 children 6-59 months of age, among whom 8% were positive and 2% indeterminate for VZV antibodies in weighted analyses. In multivariate analyses, the odds of seropositivity increased with increasing age, increasing socioeconomic status, mother's education level, rural residence, and province (South Kivu, North Kivu, Bandundu, Bas Congo had the highest odds of a positive test result compared with Kinshasa). CONCLUSION Our data suggest that VZV is circulating in DRC, and seropositivity is low among children 6-59 months. Seropositivity increased with age and varied by other sociodemographic factors, such as geographic location. This study provides the first nationally representative estimates of VZV infection among children in the DRC.
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The Seroprevalence of Varicella Zoster Virus in a Healthy Population from Tehran, Iran. ARCHIVES OF PEDIATRIC INFECTIOUS DISEASES 2018. [DOI: 10.5812/pedinfect.59883] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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13
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Seroprevalence of Varicella Zoster Infection at Provincial Level in Iranian Adolescents: The CASPIAN-III Study. ARCHIVES OF PEDIATRIC INFECTIOUS DISEASES 2017. [DOI: 10.5812/pedinfect.61647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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De Donno A, Kuhdari P, Guido M, Rota MC, Bella A, Brignole G, Lupi S, Idolo A, Stefanati A, Del Manso M, Gabutti G. Has VZV epidemiology changed in Italy? Results of a seroprevalence study. Hum Vaccin Immunother 2017; 13:385-390. [PMID: 28027004 PMCID: PMC5328229 DOI: 10.1080/21645515.2017.1264828] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 09/29/2016] [Accepted: 10/11/2016] [Indexed: 02/01/2023] Open
Abstract
The aim of the study was to evaluate if and how varicella prevalence has changed in Italy. In particular a seroprevalence study was performed, comparing it to similar surveys conducted in pre-immunization era. During 2013-2014, sera obtained from blood samples taken for diagnostic purposes or routine investigations were collected in collaboration with at least one laboratory/center for each region, following the approval of the Ethics Committee. Data were stratified by sex and age. All samples were processed in a national reference laboratory by an immunoassay with high sensitivity and specificity. Statutory notifications, national hospital discharge database and mortality data related to VZV infection were analyzed as well. A total of 3707 sera were collected and tested. In the studied period both incidence and hospitalization rates decreased and about 5 deaths per year have been registered. The seroprevalence decreased in the first year of life in subjects passively protected by their mother, followed by an increase in the following age classes. The overall antibody prevalence was 84%. The comparison with surveys conducted with the same methodology in 1996-1997 and 2003-2004 showed significant differences in age groups 1-19 y. The study confirms that in Italy VZV infection typically occurs in children. The impact of varicella on Italian population is changing. The comparison between studies performed in different periods shows a significant increase of seropositivity in age class 1 - 4 years, expression of vaccine interventions already adopted in some regions.
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Abstract
PURPOSE OF REVIEW The mainstay of antiviral therapy for the alpha-herpesviruses [herpes simplex virus (HSV)-1, HSV-2, and varicella zoster virus (VZV)] over the past 40 years has been the nucleoside analogues such as aciclovir. Although conventional antiviral therapy has reduced mortality in severe disease, novel agents are needed to address the emergence of resistance and toxicity associated with current second-line therapy. Treatment and prophylaxis of VZV and HSV reactivations remains a challenge. RECENT FINDINGS A number of compounds have recently been evaluated in human clinical trials, amongst them brincidofovir, an intracellularly acting derivative of cidofovir currently undergoing phase III trials. The helicase-primase inhibitors are a new class of antiviral agent and may circumvent resistance to existing agents. Amenamevir and pritelivir are two examples of these agents that have been evaluated clinically along with novel nucleoside analogues such as valomaciclovir and FV-100. Tenofovir, an agent used in HIV and hepatitis B therapy, may also have a role in the prevention of HSV-2 acquisition and reduce viral shedding. SUMMARY Although several novel antiviral agents have undergone clinical trials in recent years, all are yet to gain licensure. Brincidofovir appears to be the candidate with most promise for adoption into routine practice in the near future.
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Hoseini SG, Kelishadi R, Kasaeian A, Ataei B, Yaran M, Motlagh ME, Heshmat R, Ardalan G, Safari O, Qorbani M, Mostafavi SN. Seroprevalence and Risk Factors of Varicella Zoster Infection in Iranian Adolescents: A Multilevel Analysis; The CASPIAN-III Study. PLoS One 2016; 11:e0158398. [PMID: 27355931 PMCID: PMC4927171 DOI: 10.1371/journal.pone.0158398] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Accepted: 06/15/2016] [Indexed: 01/31/2023] Open
Abstract
The objective of this study was to evaluate the varicella zoster virus (VZV) immunity in Iranian adolescents. It was conducted as a primary study for vaccine implementation, and to investigate the association of climatic and socioeconomic factors with the epidemiology of this infection. In this cross- sectional study, anti VZV antibodies were measured in serum samples obtained in a national school-based health survey (CASPIAN- III). Association of demographic, socio-economic, and climate of the living region with the frequency of VZV was investigated by multivariate multilevel analysis. Overall, sera of 2753 individuals aged 10–18 were tested for VZV antibodies, from those 87.4% were positive. The prevalence was statistically different in four socio-geographic regions (P<0.001), varying between 85.24% in West region (mostly mountainous areas with cold climate) to 94.59% in Southeast region (subtropical climate). Among variables studied, only age and mean daily temperature of the living area were positively associated with the VZV seroprevalence. Our findings show that most Iranians develop immunity to VZV before the age of 10, but a substantial proportion of them are yet susceptible to the infection. Therefore, it seems that the best strategy to reduce the burden of the disease is to vaccinate high- risk adults, i.e. those without a history of varicella infection. The regional temperature might be the only determinant of VZV epidemiology in Iran.
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Affiliation(s)
- Shervin Ghaffari Hoseini
- Infectious Diseases and Tropical Medicine Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Roya Kelishadi
- Pediatrics Department, Child Growth and Development Research Center, Research Institute for Primordial Prevention of Non-communicable Disease, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Amir Kasaeian
- Hematology-Oncology and Stem Cell Transplantation Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Behrooz Ataei
- Nosocomial Infection Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Majid Yaran
- Acquired Immunodeficiency Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | | | - Ramin Heshmat
- Chronic Diseases Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Gelayol Ardalan
- Pediatrics Department, Child Growth and Development Research Center, Research Institute for Primordial Prevention of Non-communicable Disease, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Omid Safari
- Pediatrics Department, Alborz University of Medical Sciences, Karaj, Iran
| | - Mostafa Qorbani
- Dietary Supplements and Probiotics Research Center, Alborz University of Medical Sciences, Karaj, Iran
- Endocrinology & Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
- * E-mail: (MQ); (SNM)
| | - Seyed Naseredin Mostafavi
- Pediatrics Department, Child Growth and Development Research Center, Research Institute for Primordial Prevention of Non-communicable Disease, Isfahan University of Medical Sciences, Isfahan, Iran
- * E-mail: (MQ); (SNM)
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Weinert LA, Depledge DP, Kundu S, Gershon AA, Nichols RA, Balloux F, Welch JJ, Breuer J. Rates of vaccine evolution show strong effects of latency: implications for varicella zoster virus epidemiology. Mol Biol Evol 2015; 32:1020-8. [PMID: 25568346 PMCID: PMC4379407 DOI: 10.1093/molbev/msu406] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Varicella-zoster virus (VZV) causes chickenpox and shingles, and is found in human populations worldwide. The lack of temporal signal in the diversity of VZV makes substitution rate estimates unreliable, which is a barrier to understanding the context of its global spread. Here, we estimate rates of evolution by studying live attenuated vaccines, which evolved in 22 vaccinated patients for known periods of time, sometimes, but not always undergoing latency. We show that the attenuated virus evolves rapidly (∼ 10(-6) substitutions/site/day), but that rates decrease dramatically when the virus undergoes latency. These data are best explained by a model in which viral populations evolve for around 13 days before becoming latent, but then undergo no replication during latency. This implies that rates of viral evolution will depend strongly on transmission patterns. Nevertheless, we show that implausibly long latency periods are required to date the most recent common ancestor of extant VZV to an "out-of-Africa" migration with humans, as has been previously suggested.
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Affiliation(s)
- Lucy A Weinert
- Department of Veterinary Medicine, University of Cambridge, Cambridge, United Kingdom Department of Genetics, Evolution and Environment, UCL, London, United Kingdom
| | - Daniel P Depledge
- Division of Infection and Immunity, MRC Centre for Medical Molecular Virology, UCL, London, United Kingdom
| | - Samit Kundu
- Division of Infection and Immunity, MRC Centre for Medical Molecular Virology, UCL, London, United Kingdom
| | - Anne A Gershon
- Division of Infectious Disease, Columbia University Medical Centre, New York, USA
| | - Richard A Nichols
- School of Biological and Chemical Sciences, Queen Mary University of London, London, United Kingdom
| | - Francois Balloux
- Department of Genetics, Evolution and Environment, UCL, London, United Kingdom
| | - John J Welch
- Department of Genetics, University of Cambridge, Cambridge, United Kingdom
| | - Judith Breuer
- Division of Infection and Immunity, MRC Centre for Medical Molecular Virology, UCL, London, United Kingdom
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Evolution of cocirculating varicella-zoster virus genotypes during a chickenpox outbreak in Guinea-Bissau. J Virol 2014; 88:13936-46. [PMID: 25275123 PMCID: PMC4249134 DOI: 10.1128/jvi.02337-14] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Varicella-zoster virus (VZV), a double-stranded DNA alphaherpesvirus, is associated with seasonal outbreaks of varicella in nonimmunized populations. Little is known about whether these outbreaks are associated with a single or multiple viral genotypes and whether new mutations rapidly accumulate during transmission. Here, we take advantage of a well-characterized population cohort in Guinea-Bissau and produce a unique set of 23 full-length genome sequences, collected over 7 months from eight households. Comparative sequence analysis reveals that four distinct genotypes cocirculated among the population, three of which were present during the first week of the outbreak, although no patients were coinfected, which indicates that exposure to infectious virus from multiple sources is common during VZV outbreaks. Transmission of VZV was associated with length polymorphisms in the R1 repeat region and the origin of DNA replication. In two cases, these were associated with the formation of distinct lineages and point to the possible coevolution of these loci, despite the lack of any known functional link in VZV or related herpesviruses. We show that these and all other sequenced clade 5 viruses possess a distinct R1 repeat motif that increases the acidity of an ORF11p protein domain and postulate that this has either arisen or been lost following divergence of the major clades. Thus, sequencing of whole VZV genomes collected during an outbreak has provided novel insights into VZV biology, transmission patterns, and (recent) natural history. IMPORTANCE VZV is a highly infectious virus and the causative agent of chickenpox and shingles, the latter being particularly associated with the risk of painful complications. Seasonal outbreaks of chickenpox are very common among young children, yet little is known about the dynamics of the virus during person-to-person to transmission or whether multiple distinct viruses seed and/or cocirculate during an outbreak. In this study, we have sequenced chickenpox viruses from an outbreak in Guinea-Bissau that are supported by detailed epidemiological data. Our data show that multiple different virus strains seeded and were maintained throughout the 6-month outbreak period and that viruses transmitted between individuals accumulated new mutations in specific genomic regions. Of particular interest is the potential coevolution of two distinct parts of the genomes and our calculations of the rate of viral mutation, both of which increase our understanding of how VZV evolves over short periods of time in human populations.
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Schaftenaar E, Verjans GMGM, Getu S, McIntyre JA, Struthers HE, Osterhaus ADME, Peters RPH. High seroprevalence of human herpesviruses in HIV-infected individuals attending primary healthcare facilities in rural South Africa. PLoS One 2014; 9:e99243. [PMID: 24914671 PMCID: PMC4051661 DOI: 10.1371/journal.pone.0099243] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Accepted: 05/12/2014] [Indexed: 12/14/2022] Open
Abstract
Seroprevalence data of human herpesviruses (HHVs) are limited for sub-Saharan Africa. These are important to provide an indication of potential burden of HHV-related disease, in particular in human immunodeficiency virus (HIV)-infected individuals who are known to be at increased risk of these conditions in the Western world. In this cross-sectional study among 405 HIV-infected and antiretroviral therapy naïve individuals in rural South Africa the seroprevalence of HHVs was: herpes simplex virus type 1 (HSV-1) (98%), herpes simplex virus type 2 (HSV-2) (87%), varicella zoster virus (VZV) (89%), and 100% for both Epstein-Barr virus (EBV) and cytomegalovirus (CMV). Independent factors associated with VZV seropositivity were low educational status and having children. Lack of in-house access to drinking water was independently associated with positive HSV-1 serostatus, whereas Shangaan ethnicity was associated with HSV-2 seropositivity. Increasing age was associated with higher IgG titres to both EBV and CMV, whereas CD4 cell count was negatively associated with EBV and CMV IgG titres. Moreover, IgG titres of HSV-1 and 2, VZV and CMV, and CMV and EBV were positively correlated. The high HHV seroprevalence emphasises the importance of awareness of these viral infections in HIV-infected individuals in South Africa.
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Affiliation(s)
- Erik Schaftenaar
- Department of Viroscience, Erasmus Medical Center, Rotterdam, The Netherlands
- Anova Health Institute, Johannesburg and Tzaneen, South Africa
| | | | - Sarah Getu
- Department of Viroscience, Erasmus Medical Center, Rotterdam, The Netherlands
| | - James A. McIntyre
- Anova Health Institute, Johannesburg and Tzaneen, South Africa
- School of Public Health & Family Medicine, University of Cape Town, Cape Town, South Africa
| | - Helen E. Struthers
- Anova Health Institute, Johannesburg and Tzaneen, South Africa
- Department of Medicine, Division of Infectious Diseases & HIV Medicine, University of Cape Town, Cape Town, South Africa
| | | | - Remco P. H. Peters
- Anova Health Institute, Johannesburg and Tzaneen, South Africa
- Department of Medical Microbiology, Maastricht University Medical Centre, Maastricht, The Netherlands
- * E-mail:
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Quinlivan M, Breuer J. Clinical and molecular aspects of the live attenuated Oka varicella vaccine. Rev Med Virol 2014; 24:254-73. [PMID: 24687808 DOI: 10.1002/rmv.1789] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2013] [Revised: 02/25/2014] [Accepted: 02/26/2014] [Indexed: 12/24/2022]
Abstract
VZV is a ubiquitous member of the Herpesviridae family that causes varicella (chicken pox) and herpes zoster (shingles). Both manifestations can cause great morbidity and mortality and are therefore of significant economic burden. The introduction of varicella vaccination as part of childhood immunization programs has resulted in a remarkable decline in varicella incidence, and associated hospitalizations and deaths, particularly in the USA. The vaccine preparation, vOka, is a live attenuated virus produced by serial passage of a wild-type clinical isolate termed pOka in human and guinea pig cell lines. Although vOka is clinically attenuated, it can cause mild varicella, establish latency, and reactivate to cause herpes zoster. Sequence analysis has shown that vOka differs from pOka by at least 42 loci; however, not all genomes possess the novel vOka change at all positions, creating a heterogeneous population of genetically distinct haplotypes. This, together with the extreme cell-associated nature of VZV replication in cell culture and the lack of an animal model, in which the complete VZV life cycle can be replicated, has limited studies into the molecular basis for vOka attenuation. Comparative studies of vOka with pOka replication in T cells, dorsal root ganglia, and skin indicate that attenuation likely involves multiple mutations within ORF 62 and several other genes. This article presents an overview of the clinical aspects of the vaccine and current progress on understanding the molecular mechanisms that account for the clinical phenotype of reduced virulence.
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Affiliation(s)
- Mark Quinlivan
- Division of Infection and Immunity, University College London, London, UK
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21
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Seroepidemiology of Varicella and value of self-reported history of Varicella infection in Iranian medical students. Int J Occup Med Environ Health 2014; 27:304-13. [DOI: 10.2478/s13382-014-0265-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Accepted: 01/21/2014] [Indexed: 11/20/2022] Open
Abstract
Abstract
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22
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Pembrey L, Raynor P, Griffiths P, Chaytor S, Wright J, Hall AJ. Seroprevalence of cytomegalovirus, Epstein Barr virus and varicella zoster virus among pregnant women in Bradford: a cohort study. PLoS One 2013; 8:e81881. [PMID: 24312372 PMCID: PMC3842274 DOI: 10.1371/journal.pone.0081881] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Accepted: 10/27/2013] [Indexed: 12/16/2022] Open
Abstract
Objective To estimate the seroprevalence of cytomegalovirus (CMV), Epstein Barr virus (EBV) and varicella zoster virus (VZV) among pregnant women in Bradford by ethnic group and country of birth. Methods A stratified random sample of 949 pregnant women enrolled in the Born in Bradford birth cohort was selected to ensure sufficient numbers of White UK born women, Asian UK born women and Asian women born in Asia. Serum samples taken at 24-28 weeks’ gestation were tested for CMV IgG, EBV IgG and VZV IgG. Each woman completed a questionnaire which included socio-demographic information. Results CMV seroprevalence was 49% among the White British women, 89% among South Asian UK born women and 98% among South Asian women born in South Asia. These differences remained after adjusting for socio-demographic factors. In contrast, VZV seroprevalence was 95% among women born in the UK but significantly lower at 90% among South Asian women born in Asia. EBV seroprevalence was 94% overall and did not vary by ethnic group/country of birth. Conclusions Although about half of White British women are at risk of primary CMV infection in pregnancy and the associated increased risk of congenital infection, most congenital CMV infections are likely to be in children born to South Asian women with non-primary infection during pregnancy. South Asian women born in South Asia are at risk of VZV infection during pregnancy which could produce congenital varicella syndrome or perinatal chickenpox. Differences in CMV and VZV seroprevalence by ethnic group and country of birth must be taken into account when universal immunisation against these viruses is contemplated.
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Affiliation(s)
- Lucy Pembrey
- Department of Infectious Disease Epidemiology, Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, United Kingdom
- * E-mail:
| | - Pauline Raynor
- Bradford Institute for Health Research, Bradford, United Kingdom
| | - Paul Griffiths
- Centre for Virology, University College London Medical School, London, United Kingdom
| | - Shelley Chaytor
- Virology Department, Royal Free Hospital, London, United Kingdom
| | - John Wright
- Bradford Institute for Health Research, Bradford, United Kingdom
| | - Andrew J. Hall
- Department of Infectious Disease Epidemiology, Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, United Kingdom
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Risk factors for susceptibility to varicella in newly arrived adult migrants in Canada. Epidemiol Infect 2013; 142:1695-707. [PMID: 24176291 DOI: 10.1017/s0950268813002768] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Varicella occurs at an older age in tropical compared to cold climates. Migrants from tropical countries provide the opportunity to gain insights into observed global differences in varicella epidemiology. Severity of varicella increases with age thus, description of risk factors for varicella susceptibility will identify those who would benefit most from vaccination. A total of 1480 migrants, with a mean age of 32 years, were recruited in the pre-vaccination period (2002-2004) in Montreal, Canada. A questionnaire was administered and serum varicella antibodies were measured. Overall 6% were susceptible and ranged from 0·8% to 14·1% in subgroups. Risk factors for susceptibility were younger age, recent arrival, and originating from a tropical country. This could be modified by conditions that increased the probability of person-to-person spread of varicella through direct contact in source countries such as larger community size or household crowding. Many new young adult migrants would benefit from targeted varicella vaccination programmes.
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Quinlivan M, Sengupta N, Papaevangelou V, Sauerbrei A, Grillner L, Rousseva R, Hague R, Lutsar I, Jogi P, Leca A, Grytchol R, Alain S, Breuer J. Use of oral fluid to examine the molecular epidemiology of varicella zoster virus in the United Kingdom and continental Europe. J Infect Dis 2013; 207:588-93. [PMID: 23087434 PMCID: PMC3549596 DOI: 10.1093/infdis/jis649] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2012] [Accepted: 05/14/2012] [Indexed: 12/12/2022] Open
Abstract
We investigated oral fluid (OF) as an alternative to sampling of rashes for varicella zoster virus (VZV) genotyping and further characterized VZV clade prevalence in the United Kingdom and Europe. VZV was detected in up to 91% of OF specimens. Paired OF and vesicle fluid samples contained identical VZV clades. While clades 1 and 3 were the most prevalent across the United Kingdom and Europe, in Western Europe, clade 5 viruses were circulating. Viruses from the same outbreak belonged to different clades, but no clade was associated with a severe-disease phenotype. OF is suitable and convenient for large-scale molecular epidemiological studies of VZV.
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Masuet-Aumatell C, Ramon-Torrell JM, Casanova-Rituerto A, Banqué-Navarro M, Dávalos-Gamboa MDR, Montaño-Rodríguez SL. Seroprevalence of varicella-zoster virus infection in children from Cochabamba: tropical or temperate pattern? Trop Med Int Health 2012; 18:296-302. [PMID: 23279637 DOI: 10.1111/tmi.12040] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
OBJECTIVES To determine the seroprevalence of varicella-zoster viral (VZV) infections in schoolchildren from the Cochabamba region (Bolivia), and its association with socio-demographic variables, socio-economic status and geographical location. METHODS Seroepidemiological survey (n = 436) on VZV of schoolchildren living in the Cochabamba region of Bolivia in 2010. An ELISA test was used to measure varicella antibodies. Parents or guardians completed a questionnaire regarding socio-demographic information (age, gender, living area, parental educational level, presence of siblings and number of family members in the household), and a blood sample was collected from each child to check for VZV antibodies. A descriptive and bivariate analysis was performed. RESULTS The global prevalence of VZV was 78.2% (95% CI 74.3-82.1). It was higher in females (82.1%), pre-adolescents (aged 10.1-13 years: 81.4%) and adolescents (aged >13 years: 80.2%), in children with less well-educated parents (81.3% to 81.6%), in warmer municipalities (81.4% to 82.2%), in rural areas (80.0%), in children with siblings (80.1%), those who although the latter association was not statistically significant. CONCLUSIONS The prevalence of VZV infection in childhood was relatively high for a tropical country, and much closer to that of temperate countries prior to the introduction of varicella vaccine into vaccination programmes.
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Affiliation(s)
- Cristina Masuet-Aumatell
- International Health Center and Travel Medicine Clinic, University Hospital of Bellvitge, Bellvitge, Spain.
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Vergara-Castañeda A, Escobar-Gutiérrez A, Ruiz-Tovar K, Sotelo J, Ordoñez G, Cruz-Rivera MY, Fonseca-Coronado S, Martinez-Guarneros A, Carpio-Pedroza JC, Vaughan G. Epidemiology of varicella in Mexico. J Clin Virol 2012; 55:51-7. [PMID: 22750018 DOI: 10.1016/j.jcv.2012.06.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2012] [Revised: 06/08/2012] [Accepted: 06/11/2012] [Indexed: 12/20/2022]
Abstract
BACKGROUND The epidemiological patterns of varicella-zoster virus (VZV) infection, which are strongly associated with climate, are characterized by more frequent infections occurring among children in temperate regions than in the tropics. In temperate regions, varicella exhibits a seasonal cyclic behavior in which the number of cases increases significantly during the winter and spring seasons, further supporting the role of environmental factors in disease transmission. However, the underlying mechanisms responsible for this distinctive behavior are not fully understood. In Mexico, information regarding the epidemiology of varicella is scarce, and the distribution of VZV infection has not been analyzed. OBJECTIVES In this article we investigate the epidemiological patterns of varicella in Mexico and their relationship with different environmental and demographic factors. STUDY DESIGN A retrospective study was conducted using the data reported by the National Center of Epidemiological Surveillance and Disease Control. The overall varicella incidence was calculated and associated with temperature, overcrowding, age, gender and population density. RESULTS The epidemiology of varicella showed an intriguing pattern, in which warmer regions were characterized by higher incidences than in temperate regions. Young children were the most affected age group. There was no correlation between varicella incidence and overcrowding or population density. CONCLUSIONS The epidemiology of varicella in Mexico significantly departs from the characteristic patterns observed in other tropical latitudes, with some features resembling those commonly associated with temperate regions.
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van Rijckevorsel GGC, Damen M, Sonder GJ, van der Loeff MFS, van den Hoek A. Seroprevalence of varicella-zoster virus and predictors for seronegativity in the Amsterdam adult population. BMC Infect Dis 2012; 12:140. [PMID: 22721551 PMCID: PMC3434062 DOI: 10.1186/1471-2334-12-140] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2011] [Accepted: 06/21/2012] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND In the Netherlands, infection with varicella-zoster virus (VZV) is considered a benign common childhood illness and routine vaccination against VZV is not done. In 1995 it was estimated that 98-100% of the adult Dutch general population is immune, yet the estimate is based on a database in which a relative small number of people of non-Dutch ethnic origin were represented. As the city of Amsterdam has large immigrant communities originating from various subtropical and tropical countries, such as Morocco, Surinam, and Turkey with probably lower VZV transmission, this study aimed to estimate the seroprevalence of VZV IgG antibodies (anti-VZV) among various ethnic groups in Amsterdam, and identify factors associated with seronegative VZV status. METHODS The study was a cross-sectional survey of the Amsterdam population (2004), and the study sample was stratified by age and ethnicity, with deliberate oversampling of minority ethnic groups. Serum samples obtained from 1,341 residents in 2004 were tested for antibodies to VZV. Basic demographic data (gender, age, country of birth, age at immigration and number of children) were also available. RESULTS The anti-VZV seroprevalence in the overall Amsterdam population was estimated to be 94% (95% confidence intervals; 92-96%). Regarding ethnic origin, first generation immigrants (Moroccan immigrants 90%, Surinamese or Antillean immigrants 91%, and Turkish 92%), especially those that migrated after the age of 11 years, were more likely to be anti-VZV seronegative compared to those arriving at an earlier age or those born in the Netherlands (97-98%). Both ethnic origin and generation of immigration were positive predictors for IgG seronegativity to VZV (p<0.015). No other predictors for seronegativity were found. CONCLUSION The results of this study imply that about 4-8% of the general adult Amsterdam population is still susceptible to infection with VZV, and that susceptibility is even higher in some immigrant groups. When assessing the risk of infection after VZV exposure alertness is needed for vulnerable persons like pregnant women, patients with hematological malignancies or organ transplants in particular among first-generation immigrants.
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Affiliation(s)
- Gini G C van Rijckevorsel
- Public Health Service Amsterdam, Department of Infectious Diseases, Nieuwe Achtergracht 100, 1018 WT Amsterdam, the Netherlands.
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Effective degree household network disease model. J Math Biol 2012; 66:75-94. [DOI: 10.1007/s00285-011-0502-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2011] [Revised: 12/14/2011] [Indexed: 10/14/2022]
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Abstract
Varicella zoster virus (VZV) is one of eight members of the Herpesviridae family for which humans are the primary host; it causes two distinct diseases, varicella (chickenpox) and zoster (shingles). Varicella results from primary infection, during which the virus establishes latency in sensory neurons, a characteristic of all members of the Alphaherpesvirinae subfamily. Zoster is caused by reactivation of latent virus, which typically occurs when cellular immunity is impaired. VZV is the first human herpesvirus for which a vaccine has been licensed. The vaccine preparation, v-Oka, is a live-attenuated virus stock produced by the classic method of tissue culture passage in animal and human cell lines. Over 90 million doses of the vaccine have been administered in countries worldwide, including the USA, where varicella morbidity and mortality has declined dramatically. Over the last decade, several laboratories have been committed to investigating the mechanism by which the Oka vaccine is attenuated. Mutations have accumulated across the genome of the vaccine during the attenuation process; however, studies of the contribution of these changes to vaccine attenuation have been hampered by the lack of a suitable animal model of VZV disease and by the heterogeneity that exists among the viral population within the vaccine preparation. Notwithstanding, a wealth of data has been generated using various laboratory methodologies. Studies of the vaccine virus in human xenografts implanted in severe combined immunodeficiency-hu mice, have enabled analyses of the replication dynamics of the vaccine in dorsal root ganglia, T lymphocytes and skin. In vitro assays have been used to investigate the effect of vaccine mutations on viral gene expression and sequence analysis of vaccine rash viruses has permitted investigations into spread of the vaccine virus in a human host. We present here a review of what has been learned thus far about the molecular and phenotypic characteristics of the Oka vaccine.
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MESH Headings
- Animals
- Chickenpox/immunology
- Chickenpox/prevention & control
- Chickenpox/virology
- Chickenpox Vaccine/administration & dosage
- Chickenpox Vaccine/genetics
- Chickenpox Vaccine/immunology
- Ganglia, Spinal/drug effects
- Ganglia, Spinal/immunology
- Ganglia, Spinal/pathology
- Ganglia, Spinal/virology
- Herpes Zoster/immunology
- Herpes Zoster/prevention & control
- Herpes Zoster/virology
- Herpesvirus 3, Human/drug effects
- Herpesvirus 3, Human/genetics
- Herpesvirus 3, Human/immunology
- Humans
- Immunity, Cellular
- Mice
- Mice, SCID
- Polymorphism, Single Nucleotide
- Sensory Receptor Cells/drug effects
- Sensory Receptor Cells/immunology
- Sensory Receptor Cells/pathology
- Sensory Receptor Cells/virology
- Skin/drug effects
- Skin/immunology
- Skin/pathology
- Skin/virology
- Transplantation, Heterologous/immunology
- Vaccines, Attenuated/administration & dosage
- Vaccines, Attenuated/genetics
- Vaccines, Attenuated/immunology
- Virus Activation/drug effects
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Affiliation(s)
- Mark Quinlivan
- Herpesvirus Team and National VZV Laboratory, MMRHLB, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
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