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Salimović-Bešić I, Musa S, Kotorić-Keser Š, Zahirović E, Mutevelić S, Dedeić-Ljubović A. Measles outbreak in 2019: a warning for the post-COVID-19 pandemic period. J Med Microbiol 2024; 73. [PMID: 38995847 DOI: 10.1099/jmm.0.001855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/14/2024] Open
Abstract
Introduction. At the end of 2019 and the year before, there was a significant spread of measles in the World Health Organization (WHO) European Region.Gap statement. Among the countries that reported, a measles outbreak was Bosnia and Herzegovina (BiH).Aim. To describe the measles outbreak in BiH (an entity of the Federation of BiH, FBiH) in 2019.Methodology. Confirmatory IgM serology, measles nucleic acid detection by real-time RT-PCR and virus genotyping were done in the WHO-accredited laboratory for measles and rubella at the Clinical Center of the University of Sarajevo, Unit for Clinical Microbiology. Genotype was determined in all measles-RNA-positive cases by sequence analysis of the 450 nt fragment coding the C-terminal of measles virus nucleoprotein (N).Results. From 1 January to 31 December 2019, 1332 measles cases were reported, with the peak observed in April 2019 (413/1332, 31.01 %). Sarajevo Canton had the highest incidence, number of cases and percentage (206.4; 868/1332; 65.17 %) of measles cases. Around four-fifths of infected persons were unvaccinated (1086/1332, 81.53 %), while 4.58 % of the patients (61/1332) were immunized with one dose of measles-containing vaccine. The highest proportion of cases was found in children 0-6 years of age (738/1332, 55.41 %). Measles IgM positivity was determined in 75.88 % (346/456), while virus RNA was detected in 82.46 % (47/57) of the swab samples. All measles virus sequences belonged to genotype B3. SNP (position 216: C=>T) was detected in 1 of the 40 sequences obtained during this outbreak.Conclusion. Due to suboptimal immunization coverage, BiH belongs to countries at a high risk for measles outbreaks. Post-COVID-19 (coronavirus disease 2019) pandemic, targeted and tailored strategies are required to ensure routine vaccination demand and acceptance and broad partner and stakeholder group participation.
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Affiliation(s)
- Irma Salimović-Bešić
- Clinical Center of the University of Sarajevo, Unit for Clinical Microbiology, Bolnička 25, 71000 Sarajevo, Bosnia and Herzegovina
- Faculty of Health Studies, University of Sarajevo, Stjepana Tomića 1, 71000 Sarajevo, Bosnia and Herzegovina
| | - Sanjin Musa
- Institute for Public Health of the Federation of Bosnia and Herzegovina, Ul. Maršala Tita br. 9, 71000 Sarajevo, Bosnia and Herzegovina
- Sarajevo Medical School, Sarajevo School of Science and Technology, Hrasnička cesta 3a, Sarajevo, 71000, Bosnia and Herzegovina
| | - Šejla Kotorić-Keser
- Clinical Center of the University of Sarajevo, Unit for Clinical Microbiology, Bolnička 25, 71000 Sarajevo, Bosnia and Herzegovina
| | - Edina Zahirović
- Clinical Center of the University of Sarajevo, Unit for Clinical Microbiology, Bolnička 25, 71000 Sarajevo, Bosnia and Herzegovina
- Faculty of Health Studies, University of Sarajevo, Stjepana Tomića 1, 71000 Sarajevo, Bosnia and Herzegovina
| | - Selma Mutevelić
- Clinical Center of the University of Sarajevo, Unit for Clinical Microbiology, Bolnička 25, 71000 Sarajevo, Bosnia and Herzegovina
| | - Amela Dedeić-Ljubović
- Clinical Center of the University of Sarajevo, Unit for Clinical Microbiology, Bolnička 25, 71000 Sarajevo, Bosnia and Herzegovina
- Faculty of Health Studies, University of Sarajevo, Stjepana Tomića 1, 71000 Sarajevo, Bosnia and Herzegovina
- Sarajevo Medical School, Sarajevo School of Science and Technology, Hrasnička cesta 3a, Sarajevo, 71000, Bosnia and Herzegovina
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Krishna Susarla S, Jahagirdar R, Ghosh Uttam K, Srikanth Bhatt S, Prashanth S, Rajapantula V, Satish M, Rajashakar BC, Sandhya G, Rajendra L, Prasad Sahoo D, Kumar Kanakasapapathy A. Immunogenicity and safety of Mebella™ vaccine developed by Human Biologicals Institute in a Phase II/III, randomized, multicentric, non-inferiority study. Vaccine 2023; 41:6558-6564. [PMID: 37659893 DOI: 10.1016/j.vaccine.2023.08.065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 08/11/2023] [Accepted: 08/24/2023] [Indexed: 09/04/2023]
Abstract
BACKGROUND The goal of 'Measles and Rubella Strategic Framework 2021-2030' is to make "A world free from measles and rubella". To be a part of this journey, Human Biologicals Institute has developed Mebella™ vaccine, which is a lyophilized Measles and Rubella (Live) vaccine. A randomized, single blind, comparative, multicenter Phase II/III trial was conducted to compare the immunogenicity and safety of Mebella™ vaccine with MR-VAC® vaccine in healthy subjects. METHODS A total of 888 subjects were enrolled in four age groups (222 subjects in each group) of 18 years to 49 years; 2 years to below 18 years; 12 months to below 24 months; and 9 months to below 12 months of age. The subjects were randomized in 2:1 ratio to receive single dose of either Mebella™ vaccine of Human Biologicals Institute or MR-VAC® vaccine. Immunogenicity was assessed at 42 days after the vaccination and was compared between the vaccine arms in each group. Safety was also assessed and compared between the vaccine arms during the study period. RESULTS A total of 875 subjects completed the study out of 888 enrolled subjects. The seroprotection rates, seroconversion rates, and geometric mean titres for both Measles and Rubella components of Mebella™ vaccine were found to be comparable and non-inferior to the MR-VAC® vaccine after 42 days of vaccination. Injection site pain was the most common local adverse event reported whereas fever was the only systemic adverse event reported in both the vaccine arms. No serious adverse event was reported. CONCLUSION It was concluded from the study results that the test vaccine, Mebella™, was immunogenic and well tolerated and was non-inferior to the comparator vaccine, MR-VAC®, when administered to healthy subjects of 9 months to 49 years of age. Clinical Trial Registry of India Identifier: CTRI/2020/07/026930.
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Affiliation(s)
- Sai Krishna Susarla
- Human Biologicals Institute (A Division of Indian Immunologicals Limited), Hyderabad, Telangana, India.
| | - Rahul Jahagirdar
- Department of Pediatrics, Bharati Vidyapeeth (Deemed to be University) Medical College & Hospital, Pune, Maharashtra, India
| | - Kheya Ghosh Uttam
- Department of Pediatric Medicine, Institute of Child Health, Kolkata, West Bengal, India
| | - S Srikanth Bhatt
- Department of Pediatrics, Gandhi Medical College and Hospital, Secunderabad, Telangana, India
| | - S Prashanth
- Department of Pediatrics, Cheluvamba Hospital, Mysore Medical College and Research Institute, Mysore, Karnataka, India
| | - Vasudev Rajapantula
- Department of Medicine, King George Hospital, Visakhapatnam, Andhra Pradesh, India
| | - M Satish
- Human Biologicals Institute (A Division of Indian Immunologicals Limited), Hyderabad, Telangana, India
| | - B C Rajashakar
- Human Biologicals Institute (A Division of Indian Immunologicals Limited), Hyderabad, Telangana, India
| | - G Sandhya
- Human Biologicals Institute (A Division of Indian Immunologicals Limited), Hyderabad, Telangana, India
| | - L Rajendra
- Human Biologicals Institute (A Division of Indian Immunologicals Limited), Hyderabad, Telangana, India
| | - Devi Prasad Sahoo
- Human Biologicals Institute (A Division of Indian Immunologicals Limited), Hyderabad, Telangana, India
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Yerdessov S, Abbay A, Makhammajanov Z, Zhuzzhasarova A, Gusmanov A, Sakko Y, Zhakhina G, Mussina K, Syssoyev D, Alimbayev A, Gaipov A. Epidemiological characteristics and seasonal variation of measles, pertussis, and influenza in Kazakhstan between 2010-2020 years. ELECTRONIC JOURNAL OF GENERAL MEDICINE 2023. [DOI: 10.29333/ejgm/12621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
<b>Background: </b>Vaccine-preventable diseases such as pertussis, measles, and influenza remain among the most significant medical and socioeconomic issues in Kazakhstan, despite significant vaccination achievements. Thus, here we aimed to analyze the long-term dynamics and provide information on the current epidemiology of pertussis, measles, and influenza in Kazakhstan.<br />
<b>Methods: </b>A retrospective analysis of the long-term dynamics of infectious diseases was carried out using the data from the statistical collections for 2010-2020 and the Unified Payment System from 2014 to 2020.<br />
<b>Results: </b>During the 2010-2020 years, the long-term dynamics show an unequal distribution of pertussis, measles, and influenza-related morbidity. In comparison with earlier years, registration of infectious disease was the highest in 2019 and 2020. The incidence cases among registered infectious diseases in 2019 were: pertussis-147, measles-13,326, and in 2020: influenza-2,678. High incidence rates have been documented in Pavlodar, North Kazakhstan, Mangystau regions, and the cities of Shymkent and Nur-Sultan. The incidence varies depending on the seasonality: pertussis (summer-autumn), measles (winter-spring), and influenza (mostly in winter).<br />
<b>Conclusion: </b>The findings highlight the importance of focusing more on the characteristics of the epidemic process of vaccine-preventable diseases in order to assess the effectiveness of implemented measures and verify new routes in strengthening the epidemiological surveillance system.
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Affiliation(s)
- Sauran Yerdessov
- Department of Medicine, Nazarbayev University School of Medicine, Astana, KAZAKHSTAN
| | - Anara Abbay
- Department of Medicine, Nazarbayev University School of Medicine, Astana, KAZAKHSTAN
| | | | - Aygerim Zhuzzhasarova
- Department of Pediatric Infectious Diseases, Astana Medical University, Astana, KAZAKHSTAN
| | - Arnur Gusmanov
- Department of Medicine, Nazarbayev University School of Medicine, Astana, KAZAKHSTAN
| | - Yesbolat Sakko
- Department of Medicine, Nazarbayev University School of Medicine, Astana, KAZAKHSTAN
| | - Gulnur Zhakhina
- Department of Medicine, Nazarbayev University School of Medicine, Astana, KAZAKHSTAN
| | - Kamilla Mussina
- Department of Medicine, Nazarbayev University School of Medicine, Astana, KAZAKHSTAN
| | - Dmitriy Syssoyev
- Department of Medicine, Nazarbayev University School of Medicine, Astana, KAZAKHSTAN
| | - Aidar Alimbayev
- Department of Medicine, Nazarbayev University School of Medicine, Astana, KAZAKHSTAN
| | - Abduzhappar Gaipov
- Department of Medicine, Nazarbayev University School of Medicine, Astana, KAZAKHSTAN
- Clinical Academic Department of Internal Medicine, CF “University Medical Center”, Astana, KAZAKHSTAN
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Wang S, Wang C, Liu X, Liu Y, Xiong P, Tao Z, Chen M, Xu Q, Zhang L, Xu A. Comparative study on molecular epidemiology of measles H1 outbreak and sporadic cases in Shandong Province, 2013–2019. BMC Genomics 2022; 23:305. [PMID: 35421927 PMCID: PMC9011973 DOI: 10.1186/s12864-022-08492-x] [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: 11/29/2021] [Accepted: 03/15/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Measles caused by measles virus (MeV) is a highly contagious viral disease which has also been associated with complications including pneumonia, myocarditis, encephalitis, and subacute sclerosing panencephalitis. The current study isolated 33 strains belonging to 2 groups, outbreak and sporadic strains, in 13 cities of Shandong province, China from 2013 to 2019. Comparison of genetic characterization among 15 outbreak strains and 18 sporadic strains was performed by analyzing nucleotide sequences of the C-terminal region of N protein gene (N-450).
Results
All 33 stains belonged to genotype H1. The outbreak strains and sporadic strains distributed crossly in phylogenetic tree. Sequences alignment revealed some interesting G to A transversion which changed the amino acids on genomic sites 1317, 1422, and 1543. The nucleotide and amino acid similarities among outbreak isolates were 98–100% (0–10 nucleotide variations) and 97.7–100%, respectively; They were 97.3–100% and 96.6–100%, respectively for sporadic isolates. Evolutionary genetics analysis revealed that the mean evolution rates of outbreak and sporadic isolates were 1.26 N 10− 3 and 1.48 N 10− 3 substitutions per site per year separately, which were similar with corresponding data before 2012. Local transmission analysis suggested that there were three transmission chains in this study, two of them originated from Japan. Outbreak cases and sporadic cases emerged alternatively and were reciprocal causation on the transmission chains.
Conclusions
Our study investigated the phylogeny and evolutional genetics of MeV during a 7-year surveillance, and compared epidemic and genetic characteristics of outbreak strains and sporadic strains. These results underscore the importance of evolutionary study alongside with sporadic cases in discovering and tracing possible outbreaks, especially in the stage of measles elimination.
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Zhang R, Jiang H, Li F, Su N, Ding Y, Mao X, Ren D, Wang J. Key genes and pathways in measles and their interaction with environmental chemicals. Exp Ther Med 2018; 15:4890-4900. [PMID: 29805511 DOI: 10.3892/etm.2018.6050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 02/02/2018] [Indexed: 11/05/2022] Open
Abstract
The aim of the present study was to explore key genes that may have a role in the pathology of measles virus infection and to clarify the interaction networks between environmental factors and differentially expressed genes (DEGs). After screening the database of the Gene Expression Omnibus of the National Center for Biotechnology Information, the dataset GSE5808 was downloaded and analyzed. A global normalization method was performed to minimize data inconsistencies and heterogeneity. DEGs during different stages of measles virus infection were explored using R software (v3.4.0). Gene Ontology and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis of the DEGs were performed using Cytoscape 3.4.0 software. A protein-protein interaction (PPI) network of the DEGs was obtained from the STRING database v9.05. A total of 43 DEGs were obtained from four analyzed sample groups, including 10 highly expressed genes and 33 genes with decreased expression. The most enriched pathways based on KEGG analysis were fatty acid elongation, cytokine-cytokine receptor interaction and RNA degradation. The genes mentioned in the PPI network were mainly associated with protein binding and chemokine activity. A total of 219 chemicals were identified that may, jointly or on their own, interact with the 6 DEGs between the control group and patients with measles (at hospital entry), including benzo(a)pyrene (BaP) and tetrachlorodibenzodioxin (TCDD). In conclusion, the present study revealed that chemokines and environmental chemicals, e.g. BaP and TCDD, may affect the development of measles.
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Affiliation(s)
- Rongqiang Zhang
- Department of Epidemiology and Health Statistics, School of Public Health, Shaanxi University of Chinese Medicine, Xi'an, Shaanxi 712046, P.R. China
| | - Hualin Jiang
- Department of Nursing, Health Science Center, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China.,Department of Medical Education, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Fengying Li
- Immunization Department of Center for Disease Control and Prevention of Xianyang, Xianyang, Shaanxi 712046, P.R. China
| | - Ning Su
- Department of Radiation Oncology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Yi Ding
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Xiang Mao
- GoDaddy Inc, Sunnyvale, CA 95131, USA
| | - Dan Ren
- Department of Nursing, Health Science Center, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Jing Wang
- Department of Epidemiology and Health Statistics, School of Public Health, Shaanxi University of Chinese Medicine, Xi'an, Shaanxi 712046, P.R. China
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Muñoz-Alía MÁ, Muller CP, Russell SJ. Hemagglutinin-specific neutralization of subacute sclerosing panencephalitis viruses. PLoS One 2018; 13:e0192245. [PMID: 29466428 PMCID: PMC5821319 DOI: 10.1371/journal.pone.0192245] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Accepted: 01/18/2018] [Indexed: 12/31/2022] Open
Abstract
Subacute sclerosing panencephalitis (SSPE) is a progressive, lethal complication of measles caused by particular mutants of measles virus (MeV) that persist in the brain despite high levels of neutralizing antibodies. We addressed the hypothesis that antigenic drift is involved in the pathogenetic mechanism of SSPE by analyzing antigenic alterations in the MeV envelope hemagglutinin protein (MeV-H) found in patients with SSPE in relation to major circulating MeV genotypes. To this aim, we obtained cDNA for the MeV-H gene from tissue taken at brain autopsy from 3 deceased persons with SSPE who had short (3-4 months, SMa79), average (3.5 years, SMa84), and long (18 years, SMa94) disease courses. Recombinant MeVs with a substituted MeV-H gene were generated by a reverse genetic system. Virus neutralization assays with a panel of anti-MeV-H murine monoclonal antibodies (mAbs) or vaccine-immunized mouse anti-MeV-H polyclonal sera were performed to determine the antigenic relatedness. Functional and receptor-binding analysis of the SSPE MeV-H showed activity in a SLAM/nectin-4-dependent manner. Similar to our panel of wild-type viruses, our SSPE viruses showed an altered antigenic profile. Genotypes A, G3, and F (SSPE case SMa79) were the exception, with an intact antigenic structure. Genotypes D7 and F (SSPE SMa79) showed enhanced neutralization by mAbs targeting antigenic site IIa. Genotypes H1 and the recently reported D4.2 were the most antigenically altered genotypes. Epitope mapping of neutralizing mAbs BH015 and BH130 reveal a new antigenic site on MeV-H, which we designated Φ for its intermediate position between previously defined antigenic sites Ia and Ib. We conclude that SSPE-causing viruses show similar antigenic properties to currently circulating MeV genotypes. The absence of a direct correlation between antigenic changes and predisposition of a certain genotype to cause SSPE does not lend support to the proposed antigenic drift as a pathogenetic mechanism in SSPE.
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Affiliation(s)
- Miguel Ángel Muñoz-Alía
- Department of Molecular Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Claude P. Muller
- Department of Infection and Immunity, Luxembourg Institute of Health, Esch-Sur-Alzette (Grand Duchy of Luxembourg), Luxembourg
- Laboratoire National de Santé, Dudelange, Luxembourg
| | - Stephen J. Russell
- Department of Molecular Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
- Division of Hematology, Mayo Clinic, Rochester, Minnesota, United States of America
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Positive predictive value and effectiveness of measles case-based surveillance in Uganda, 2012-2015. PLoS One 2017; 12:e0184549. [PMID: 28886171 PMCID: PMC5590970 DOI: 10.1371/journal.pone.0184549] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 08/26/2017] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION Disease surveillance is a critical component in the control and elimination of vaccine preventable diseases. The Uganda National Expanded Program on Immunization strives to have a sensitive surveillance system within the Integrated Disease Surveillance and Response (IDSR) framework. We analyzed measles surveillance data to determine the effectiveness of the measles case-based surveillance system and estimate its positive predictive value in order to inform policy and practice. METHODS An IDSR alert was defined as ≥1 suspected measles case reported by a district in a week, through the electronic Health Management Information System. We defined an alert in the measles case-based surveillance system (CBS) as ≥1 suspected measles case with a blood sample collected for confirmation during the corresponding week in a particular district. Effectiveness of CBS was defined as having ≥80% of IDSR alerts with a blood sample collected for laboratory confirmation. Positive predictive value was defined as the proportion of measles case-patients who also had a positive measles serological result (IgM +). We reviewed case-based surveillance data with laboratory confirmation and measles surveillance data from the electronic Health Management Information System from 2012-2015. RESULTS A total of 6,974 suspected measles case-persons were investigated by the measles case-based surveillance between 2012 and 2015. Of these, 943 (14%) were measles specific IgM positive. The median age of measles case-persons between 2013 and 2015 was 4.0 years. Between 2013 and 2015, 72% of the IDSR alerts reported in the electronic Health Management Information System, had blood samples collected for laboratory confirmation. This was however less than the WHO recommended standard of ≥80%. The PPV of CBS between 2013 and 2015 was 8.6%. CONCLUSION In conclusion, the effectiveness of measles case-based surveillance was sub-optimal, while the PPV showed that true measles cases have significantly reduced in Uganda. We recommended strengthening of case-based surveillance to ensure that all suspected measles cases have blood samples collected for laboratory confirmation to improve detection and ensure elimination by 2020.
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Perspective on Global Measles Epidemiology and Control and the Role of Novel Vaccination Strategies. Viruses 2017; 9:v9010011. [PMID: 28106841 PMCID: PMC5294980 DOI: 10.3390/v9010011] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 01/10/2017] [Accepted: 01/10/2017] [Indexed: 12/21/2022] Open
Abstract
Measles is a highly contagious, vaccine preventable disease. Measles results in a systemic illness which causes profound immunosuppression often leading to severe complications. In 2010, the World Health Assembly declared that measles can and should be eradicated. Measles has been eliminated in the Region of the Americas, and the remaining five regions of the World Health Organization (WHO) have adopted measles elimination goals. Significant progress has been made through increased global coverage of first and second doses of measles-containing vaccine, leading to a decrease in global incidence of measles, and through improved case based surveillance supported by the WHO Global Measles and Rubella Laboratory Network. Improved vaccine delivery methods will likely play an important role in achieving measles elimination goals as these delivery methods circumvent many of the logistic issues associated with subcutaneous injection. This review highlights the status of global measles epidemiology, novel measles vaccination strategies, and describes the pathway toward measles elimination.
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Holzmann H, Hengel H, Tenbusch M, Doerr HW. Eradication of measles: remaining challenges. Med Microbiol Immunol 2016; 205:201-8. [PMID: 26935826 PMCID: PMC4866980 DOI: 10.1007/s00430-016-0451-4] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Accepted: 02/11/2016] [Indexed: 12/11/2022]
Abstract
Measles virus (MeV) is an aerosol-borne and one of the most contagious pathogenic viruses known. Almost every MeV infection becomes clinically manifest and can lead to serious and even fatal complications, especially under conditions of malnutrition in developing countries, where still 115,000 to 160,000 patients die from measles every year. There is no specific antiviral treatment. In addition, MeV infections cause long-lasting memory B and T cell impairment, predisposing people susceptible to opportunistic infections for years. A rare, but fatal long-term consequence of measles is subacute sclerosing panencephalitis. Fifteen years ago (2001), WHO has launched a programme to eliminate measles by a worldwide vaccination strategy. This is promising, because MeV is a human-specific morbillivirus (i.e. without relevant animal reservoir), safe and potent vaccine viruses are sufficiently produced since decades for common application, and millions of vaccine doses have been used globally without any indications of safety and efficacy issues. Though the prevalence of wild-type MeV infection has decreased by >90 % in Europe, measles is still not eliminated and has even re-emerged with recurrent outbreaks in developed countries, in which effective vaccination programmes had been installed for decades. Here, we discuss the crucial factors for a worldwide elimination of MeV: (1) efficacy of current vaccines, (2) the extremely high contagiosity of MeV demanding a >95 % vaccination rate based on two doses to avoid primary vaccine failure as well as the installation of catch-up vaccination programmes to fill immunity gaps and to achieve herd immunity, (3) the implications of sporadic cases of secondary vaccine failure, (4) organisation, acceptance and drawbacks of modern vaccination campaigns, (5) waning public attention to measles, but increasing concerns from vaccine-associated adverse reactions in societies with high socio-economic standards and (6) clinical, epidemiological and virological surveillance by the use of modern laboratory diagnostics and reporting systems. By consequent implementation of carefully designed epidemiologic and prophylactic measures, it should be possible to eradicate MeV globally out of mankind, as the closely related morbillivirus of rinderpest could be successfully eliminated out of the cattle on a global scale.
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Affiliation(s)
| | - Hartmut Hengel
- />Institute of Virology, University Medical Center, Albert-Ludwigs-University Freiburg, Freiburg, Germany
| | - Matthias Tenbusch
- />Department of Molecular and Medical Virology, Ruhr-University Bochum, Bochum, Germany
| | - H. W. Doerr
- />Institute for Medical Virology, Goethe-University Hospital Frankfurt, Frankfurt/M., Germany
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Beaty SM, Lee B. Constraints on the Genetic and Antigenic Variability of Measles Virus. Viruses 2016; 8:109. [PMID: 27110809 PMCID: PMC4848602 DOI: 10.3390/v8040109] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Revised: 04/06/2016] [Accepted: 04/14/2016] [Indexed: 01/04/2023] Open
Abstract
Antigenic drift and genetic variation are significantly constrained in measles virus (MeV). Genetic stability of MeV is exceptionally high, both in the lab and in the field, and few regions of the genome allow for rapid genetic change. The regions of the genome that are more tolerant of mutations (i.e., the untranslated regions and certain domains within the N, C, V, P, and M proteins) indicate genetic plasticity or structural flexibility in the encoded proteins. Our analysis reveals that strong constraints in the envelope proteins (F and H) allow for a single serotype despite known antigenic differences among its 24 genotypes. This review describes some of the many variables that limit the evolutionary rate of MeV. The high genomic stability of MeV appears to be a shared property of the Paramyxovirinae, suggesting a common mechanism that biologically restricts the rate of mutation.
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Affiliation(s)
- Shannon M Beaty
- Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.
| | - Benhur Lee
- Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.
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External Quality Assessment for the Detection of Measles Virus by Reverse Transcription-PCR Using Armored RNA. PLoS One 2015; 10:e0134681. [PMID: 26244795 PMCID: PMC4526687 DOI: 10.1371/journal.pone.0134681] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2015] [Accepted: 07/13/2015] [Indexed: 12/13/2022] Open
Abstract
In recent years, nucleic acid tests for detection of measles virus RNA have been widely applied in laboratories belonging to the measles surveillance system of China. An external quality assessment program was established by the National Center for Clinical Laboratories to evaluate the performance of nucleic acid tests for measles virus. The external quality assessment panel, which consisted of 10 specimens, was prepared using armored RNAs, complex of noninfectious MS2 bacteriophage coat proteins encapsulated RNA of measles virus, as measles virus surrogate controls. Conserved sequences amplified from a circulating measles virus strain or from a vaccine strain were encapsulated into these armored RNAs. Forty-one participating laboratories from 15 provinces, municipalities, or autonomous regions that currently conduct molecular detection of measles virus enrolled in the external quality assessment program, including 40 measles surveillance system laboratories and one diagnostic reagent manufacturer. Forty laboratories used commercial reverse transcription-quantitative PCR kits, with only one laboratory applying a conventional PCR method developed in-house. The results indicated that most of the participants (38/41, 92.7%) were able to accurately detect the panel with 100% sensitivity and 100% specificity. Although a wide range of commercially available kits for nucleic acid extraction and reverse transcription polymerase chain reaction were used by the participants, only two false-negative results and one false-positive result were generated; these were generated by three separate laboratories. Both false-negative results were obtained with tests performed on specimens with the lowest concentration (1.2 × 104 genomic equivalents/mL). In addition, all 18 participants from Beijing achieved 100% sensitivity and 100% specificity. Overall, we conclude that the majority of the laboratories evaluated have reliable diagnostic capacities for the detection of measles virus.
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Kuttiatt VS, Kalpathodi S, Gangadharan ST, Kailas L, Sreekumar E, Sukumaran SM, Nair RR. Detection of measles virus genotype B3, India. Emerg Infect Dis 2015; 20:1764-6. [PMID: 25272247 PMCID: PMC4193266 DOI: 10.3201/eid2010.130742] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Dia N, Fall A, Ka R, Fall A, Kiori DE, Goudiaby DG, Fall AD, Faye EHA, Dosseh A, Ndiaye K, Diop OM, Niang MN. Epidemiology and genetic characterization of measles strains in Senegal, 2004-2013. PLoS One 2015; 10:e0121704. [PMID: 26000828 PMCID: PMC4441473 DOI: 10.1371/journal.pone.0121704] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2014] [Accepted: 02/14/2015] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND In Senegal, with the variable routine vaccination coverage, the risk for illness and death from measles still exists as evidenced by the measles epidemic episode in 2009. Since 2002 a laboratory-based surveillance system of measles was established by the Ministry of Health and the Institut Pasteur de Dakar. The present study analysed the data collected over the 10 years inclusive between 2004-2013 in order to define a measles epidemiological profile in Senegal, and we carried out a phylogenetic analysis of measles virus circulating in Senegal over the period 2009-2012. METHODOLOGY AND RESULTS A total number of 4580 samples were collected from suspected cases, with the most cases between 2008 and 2010 (2219/4580; 48.4%). The majority of suspected cases are found in children from 4-6 years old (29%). 981 (21.4%) were measles laboratory-confirmed by IgM ELISA. The measles confirmation rate per year is very high during 2009-2010 periods (48.5% for each year). Regarding age groups, the highest measles IgM-positivity rate occurred among persons aged over 15 years with 39.4% (115/292) followed by 2-3 years old age group with 30.4% (323/1062) and 30% (148/494) in children under one year old group. The majority of suspected cases were collected between February and June and paradoxically confirmed cases rates increased from July (77/270; 28.6%) and reached a peak in November with 60% (93/155). Phylogenetic analysis showed that all the 29 sequences from strains that circulated in Senegal between 2009 and 2012 belong to the B3 genotype and they are clustered in B3.1 (2011-2012) and B3.3 (2009-2011) sub-genotypes according to a temporal parameter. CONCLUSION Improvements in the measles surveillance in Senegal are required and the introduction of oral fluid and FTA cards as an alternative to transportation of sera should be investigated to improve surveillance. The introduction of a national vaccine database including number of doses of measles-containing vaccine will greatly improve efforts to interrupt and ultimately eliminate measles virus transmission in Senegal.
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Affiliation(s)
- Ndongo Dia
- Institut Pasteur de Dakar, Unité de Virologie Médicale, Dakar, Sénégal
| | - Ameth Fall
- Institut Pasteur de Dakar, Unité de Virologie Médicale, Dakar, Sénégal
| | - Rouguiyatou Ka
- Laboratoire de Bactériologie, Centre Hospitalier National Universitaire de Fann, Dakar, Sénégal
| | - Amary Fall
- Institut Pasteur de Dakar, Unité de Virologie Médicale, Dakar, Sénégal
| | - David E. Kiori
- Institut Pasteur de Dakar, Unité de Virologie Médicale, Dakar, Sénégal
| | | | - Aichatou D. Fall
- Institut Pasteur de Dakar, Unité de Virologie Médicale, Dakar, Sénégal
| | | | - Annick Dosseh
- Institut Pasteur de Dakar, Unité de Virologie Médicale, Dakar, Sénégal
| | - Kader Ndiaye
- Institut Pasteur de Dakar, Unité de Virologie Médicale, Dakar, Sénégal
| | - Ousmane M. Diop
- Institut Pasteur de Dakar, Unité de Virologie Médicale, Dakar, Sénégal
| | - Mbayame Nd. Niang
- Institut Pasteur de Dakar, Unité de Virologie Médicale, Dakar, Sénégal
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Santibanez S, Hübschen JM, Muller CP, Freymuth F, Mosquera MM, Mamou MB, Mulders MN, Brown KE, Myers R, Mankertz A. Long-term transmission of measles virus in Central and continental Western Europe. Virus Genes 2015; 50:2-11. [DOI: 10.1007/s11262-015-1173-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Accepted: 01/16/2015] [Indexed: 12/18/2022]
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Wang S, Luo X, Wei W, Zheng Y, Dou Y, Cai X. Calculation of evolutionary correlation between individual genes and full-length genome: a method useful for choosing phylogenetic markers for molecular epidemiology. PLoS One 2013; 8:e81106. [PMID: 24312527 PMCID: PMC3849185 DOI: 10.1371/journal.pone.0081106] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2013] [Accepted: 10/18/2013] [Indexed: 11/21/2022] Open
Abstract
Individual genes or regions are still commonly used to estimate the phylogenetic relationships among viral isolates. The genomic regions that can faithfully provide assessments consistent with those predicted with full-length genome sequences would be preferable to serve as good candidates of the phylogenetic markers for molecular epidemiological studies of many viruses. Here we employed a statistical method to evaluate the evolutionary relationships between individual viral genes and full-length genomes without tree construction as a way to determine which gene can match the genome well in phylogenetic analyses. This method was performed by calculation of linear correlations between the genetic distance matrices of aligned individual gene sequences and aligned genome sequences. We applied this method to the phylogenetic analyses of porcine circovirus 2 (PCV2), measles virus (MV), hepatitis E virus (HEV) and Japanese encephalitis virus (JEV). Phylogenetic trees were constructed for comparisons and the possible factors affecting the method accuracy were also discussed in the calculations. The results revealed that this method could produce results consistent with those of previous studies about the proper consensus sequences that could be successfully used as phylogenetic markers. And our results also suggested that these evolutionary correlations could provide useful information for identifying genes that could be used effectively to infer the genetic relationships.
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Affiliation(s)
- Shuai Wang
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China
| | - Xuenong Luo
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China
| | - Wei Wei
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China
| | - Yadong Zheng
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China
| | - Yongxi Dou
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China
- * E-mail: (YD); (XC)
| | - Xuepeng Cai
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China
- * E-mail: (YD); (XC)
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Hardie DR, Albertyn C, Heckmann JM, Smuts HEM. Molecular characterisation of virus in the brains of patients with measles inclusion body encephalitis (MIBE). Virol J 2013; 10:283. [PMID: 24025157 PMCID: PMC3847183 DOI: 10.1186/1743-422x-10-283] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Accepted: 09/09/2013] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND During 2009/10 a major measles epidemic caused by genotype B3 occurred in South Africa. Measles inclusion body encephalitis (MIBE) was diagnosed in a number of highly immuno-compromised HIV patients. The diagnosis was based on typical clinical and MRI findings and positive measles virus PCR in brain or CSF.To characterize the brain virus, nucleoprotein, matrix, fusion and haemagglutinin genes from 4 cases was compared with virus from acutely infected patients. METHODS cDNA was synthesized using random primers and viral genes were amplified by nested RT-PCR. PCR products were sequenced in the forward and reverse direction and a contig of each gene was created. Sequences were aligned with reference sequences from GenBank and other local sequences. RESULTS Brain virus was very similar to the South African epidemic virus. Features characteristic of persistent measles virus in the brain were absent. Mutation frequency in brain virus was similar to epidemic virus and had the same substitution preference (U to C and C to U). The virus of 2 patients had the same L454W mutation in the fusion protein. CONCLUSION The brain virus was very similar to the epidemic strain. The relatively few mutations probably reflect the short time from infection to brain disease in these highly immuno-compromised patients.
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Affiliation(s)
- Diana R Hardie
- Division of Medical Virology, Department of Clinical Laboratory Sciences, University of Cape Town and National Health Laboratory Service, Cape Town, South Africa
| | - Christine Albertyn
- Division of Neurology, Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - Jeannine M Heckmann
- Division of Neurology, Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - Heidi EM Smuts
- Division of Medical Virology, Department of Clinical Laboratory Sciences, University of Cape Town and National Health Laboratory Service, Cape Town, South Africa
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17
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Improving molecular tools for global surveillance of measles virus. J Clin Virol 2013; 58:176-82. [PMID: 23806666 DOI: 10.1016/j.jcv.2013.05.018] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2013] [Revised: 05/21/2013] [Accepted: 05/24/2013] [Indexed: 12/21/2022]
Abstract
BACKGROUND The genetic characterization of wild-type measles viruses plays an important role in the description of viral transmission pathways and the verification of measles elimination. The 450 nucleotides that encode the carboxyl-terminus of the nucleoprotein (N-450) are routinely sequenced for genotype analysis. OBJECTIVES The objectives of this study were to develop improved primers and controls for RT-PCR reactions used for genotyping of measles samples and to develop a method to provide a convenient, safe, and inexpensive means to distribute measles RNA for RT-PCR assays and practice panels. STUDY DESIGN A newly designed, genetically defined synthetic RNA and RNA isolated from cells infected with currently circulating genotypes were used to compare the sensitivity of primer pairs in RT-PCR and nested PCR. FTA® cards loaded with lysates of measles infected cells were tested for their ability to preserve viral RNA and destroy virus infectivity. RESULTS A new primer pair, MeV216/MeV214, was able to amplify N-450 from viruses representing 10 currently circulating genotypes and a genotype A vaccine strain and demonstrated 100-fold increased sensitivity compared to the previously used primer set. A nested PCR assay further increased the sensitivity of detection from patient samples. A synthetic positive control RNA was developed that produced PCR products that are distinguishable by size from PCR products amplified from clinical samples. FTA® cards completely inactivated measles virus and stabilized RNA for at least six months. CONCLUSIONS These improved molecular tools will advance molecular characterization of circulating measles viruses globally and provide enhanced quality control measures.
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Lech PJ, Tobin GJ, Bushnell R, Gutschenritter E, Pham LD, Nace R, Verhoeyen E, Cosset FL, Muller CP, Russell SJ, Nara PL. Epitope dampening monotypic measles virus hemagglutinin glycoprotein results in resistance to cocktail of monoclonal antibodies. PLoS One 2013; 8:e52306. [PMID: 23300970 PMCID: PMC3536790 DOI: 10.1371/journal.pone.0052306] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2012] [Accepted: 11/16/2012] [Indexed: 12/21/2022] Open
Abstract
The measles virus (MV) is serologically monotypic. Life-long immunity is conferred by a single attack of measles or following vaccination with the MV vaccine. This is contrary to viruses such as influenza, which readily develop resistance to the immune system and recur. A better understanding of factors that restrain MV to one serotype may allow us to predict if MV will remain monotypic in the future and influence the design of novel MV vaccines and therapeutics. MV hemagglutinin (H) glycoprotein, binds to cellular receptors and subsequently triggers the fusion (F) glycoprotein to fuse the virus into the cell. H is also the major target for neutralizing antibodies. To explore if MV remains monotypic due to a lack of plasticity of the H glycoprotein, we used the technology of Immune Dampening to generate viruses with rationally designed N-linked glycosylation sites and mutations in different epitopes and screened for viruses that escaped monoclonal antibodies (mAbs). We then combined rationally designed mutations with naturally selected mutations to generate a virus resistant to a cocktail of neutralizing mAbs targeting four different epitopes simultaneously. Two epitopes were protected by engineered N-linked glycosylations and two epitopes acquired escape mutations via two consecutive rounds of artificial selection in the presence of mAbs. Three of these epitopes were targeted by mAbs known to interfere with receptor binding. Results demonstrate that, within the epitopes analyzed, H can tolerate mutations in different residues and additional N-linked glycosylations to escape mAbs. Understanding the degree of change that H can tolerate is important as we follow its evolution in a host whose immunity is vaccine induced by genotype A strains instead of multiple genetically distinct wild-type MVs.
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Affiliation(s)
- Patrycja J Lech
- Department of Molecular Medicine, Mayo Clinic, Rochester, Minnesota, United States of America.
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Zhang X, Lu G, Qi J, Li Y, He Y, Xu X, Shi J, Zhang CWH, Yan J, Gao GF. Structure of measles virus hemagglutinin bound to its epithelial receptor nectin-4. Nat Struct Mol Biol 2013; 20:67-72. [PMID: 23202587 DOI: 10.1038/nsmb.2432] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2012] [Accepted: 10/01/2012] [Indexed: 12/14/2022]
Abstract
Measles virus is a major public health concern worldwide. Three measles virus cell receptors have been identified so far, and the structures of the first two in complex with measles virus hemagglutinin (MV-H) have been reported. Nectin-4 is the most recently identified receptor in epithelial cells, and its binding mode to MV-H remains elusive. In this study, we solved the structure of the membrane-distal domain of human nectin-4 in complex with MV-H. The structure shows that nectin-4 binds the MV-H β4-β5 groove exclusively via its N-terminal IgV domain; the contact interface is dominated by hydrophobic interactions. The binding site in MV-H for nectin-4 also overlaps extensively with those of the other two receptors. Finally, a hydrophobic pocket centered in the β4-β5 groove is involved in binding to all three identified measles virus receptors, representing a potential target for antiviral drugs.
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Affiliation(s)
- Xiaoai Zhang
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
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20
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Identification of different lineages of measles virus strains circulating in Uttar Pradesh, North India. Virol J 2012; 9:237. [PMID: 23072489 PMCID: PMC3544691 DOI: 10.1186/1743-422x-9-237] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2012] [Accepted: 09/14/2012] [Indexed: 11/15/2022] Open
Abstract
Background Genetic analysis of measles viruses associated with recent cases and outbreaks has proven to bridge information gaps in routine outbreak investigations and has made a substantial contribution to measles control efforts by helping to identify the transmission pathways of the virus. Materials and methods The present study describes the genetic characterization of wild type measles viruses from Uttar Pradesh, India isolated between January 2008 and January 2011. In the study, 526 suspected measles cases from 15 outbreaks were investigated. Blood samples were collected from suspected measles outbreaks and tested for the presence of measles specific IgM; throat swab and urine samples were collected for virus isolation and RT-PCR. Genotyping of circulating measles viruses in Uttar Pradesh was performed by sequencing a 450-bp region encompassing the nucleoprotein hypervariable region and phylogenetic analysis. Results and conclusion Based on serological results, all the outbreaks were confirmed as measles. Thirty eight strains were obtained. Genetic analysis of circulating measles strains (n = 38) in Uttar Pradesh from 235 cases of laboratory-confirmed cases from 526 suspected measles cases between 2008 and 2011 showed that all viruses responsible for outbreaks were within clade D and all were genotype D8. Analysis of this region showed that it is highly divergent (up to 3.4% divergence in the nucleotide sequence and 4.1% divergence in the amino acid sequence between most distant strains). Considerable genetic heterogeneity was observed in the MV genotype D8 viruses in North India and underscores the need for continued surveillance and in particular increases in vaccination levels to decrease morbidity and mortality attributable to measles.
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21
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Wei C, Shi J, Liu B, Shi Y, Zheng J, Xu G, Ma J, Wang G, Li F. Molecular characterization of the measles virus genotypes in JiLin Province, China. PLoS One 2012; 7:e46011. [PMID: 23056226 PMCID: PMC3466264 DOI: 10.1371/journal.pone.0046011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Accepted: 08/23/2012] [Indexed: 01/04/2023] Open
Abstract
Measles remains a severe global health threat, and nearly 30 million new cases are reported annually. Although many studies have analyzed measles viruses (MV) at the epidemiologic and phylogenetic levels, no study has yet to integrate these two types of data. To this end, we isolated 16 wild-type MV strains China's Jilin province. The MV genotype H1 was the most prevalent strain. After sequencing the nucleoprotein (N) genes of these strains, a maximum clade credibility tree was constructed by the Bayesian Markov Chain Monte Carlo method using 450 MV strains from GenBank with epidemiological information. The MV N gene evolution rate was 1.127E-3. Analysis of the time of the most recent common ancestor (TMRCA) for genotypes A/B/C/G/H revealed that genotypes D and B had the largest and smallest TMRCA (45.86 and 26.63, respectively). The highest level of genetic diversity for the MV N gene occurred around the year 2000. Here in this study, we uncovered the MV genotypes circulating in China's Jilin Province and estimated the epidemiologic and phylogenetic relationship for the six different genotypes of MV.
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Affiliation(s)
- Chengguo Wei
- Department of Pathogeny Biology, Norman Bethune Medical College of Jilin University, Changchun, Jilin, China
| | - Jingwei Shi
- Department of Pathogeny Biology, Norman Bethune Medical College of Jilin University, Changchun, Jilin, China
| | - Bin Liu
- The First Bethune Hospital of Jilin University, Changchun, Jilin, China
| | - Yue Shi
- Department of Pathogeny Biology, Norman Bethune Medical College of Jilin University, Changchun, Jilin, China
| | - Jingtong Zheng
- Department of Pathogeny Biology, Norman Bethune Medical College of Jilin University, Changchun, Jilin, China
| | - Guangyu Xu
- Department of Pathogeny Biology, Norman Bethune Medical College of Jilin University, Changchun, Jilin, China
| | - Jinshu Ma
- Department of Pathogeny Biology, Norman Bethune Medical College of Jilin University, Changchun, Jilin, China
| | - Guoqing Wang
- Department of Pathogeny Biology, Norman Bethune Medical College of Jilin University, Changchun, Jilin, China
- Key Laboratory of Zoonosis Research, Ministry of Education, Jilin University,, Changchun, Jilin, China
- * E-mail: (GW); (FL)
| | - Fan Li
- Department of Pathogeny Biology, Norman Bethune Medical College of Jilin University, Changchun, Jilin, China
- Key Laboratory of Zoonosis Research, Ministry of Education, Jilin University,, Changchun, Jilin, China
- * E-mail: (GW); (FL)
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Pattamadilok S, Incomserb P, Primsirikunawut A, Lukebua A, Rota PA, Sawanpanyalert P. Genetic characterization of measles viruses that circulated in Thailand from 1998 to 2008. J Med Virol 2012; 84:804-13. [PMID: 22431030 DOI: 10.1002/jmv.23249] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
During the period between 1998 and 2008, 48 representative measles viruses (MeVs) circulating in Thailand were subjected to genetic characterization. Three genotypes, G2, D5, and D9 were detected. The results suggested that measles genotype D5, which has been circulating since at least 1998, is the endemic genotype in Thailand. Genotype G2 was detected between 1998 and 2001. In addition, almost all of the MeVs detected throughout the country in 2008 were genotype D9. This is the first report of genotype D9 in Thailand. This report provides important baseline data about measles genotypes in Thailand and this information will be needed to help verify measles elimination in Thailand.
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Affiliation(s)
- Sirima Pattamadilok
- National Institute of Health, Department of Medical Sciences, Nonthaburi, Thailand.
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23
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Lo MK, Lowe L, Hummel KB, Sazzad HMS, Gurley ES, Hossain MJ, Luby SP, Miller DM, Comer JA, Rollin PE, Bellini WJ, Rota PA. Characterization of Nipah virus from outbreaks in Bangladesh, 2008-2010. Emerg Infect Dis 2012; 18:248-55. [PMID: 22304936 PMCID: PMC3310473 DOI: 10.3201/eid1802.111492] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
New genotyping scheme facilitates classification of virus sequences. Nipah virus (NiV) is a highly pathogenic paramyxovirus that causes fatal encephalitis in humans. The initial outbreak of NiV infection occurred in Malaysia and Singapore in 1998–1999; relatively small, sporadic outbreaks among humans have occurred in Bangladesh since 2001. We characterized the complete genomic sequences of identical NiV isolates from 2 patients in 2008 and partial genomic sequences of throat swab samples from 3 patients in 2010, all from Bangladesh. All sequences from patients in Bangladesh comprised a distinct genetic group. However, the detection of 3 genetically distinct sequences from patients in the districts of Faridpur and Gopalganj indicated multiple co-circulating lineages in a localized region over a short time (January–March 2010). Sequence comparisons between the open reading frames of all available NiV genes led us to propose a standardized protocol for genotyping NiV; this protcol provides a simple and accurate way to classify current and future NiV sequences.
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Affiliation(s)
- Michael K Lo
- Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA.
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Salimi V, Mokhtari-Azad T, Abbasi S, Noroozbabaei Z, Soltan-Shahi R, Zahraie M, Bont L, Gouya MM. Molecular epidemiology of measles virus in Iran 2009-2010: first detection of measles genotype H1. J Med Virol 2012; 83:2200-7. [PMID: 22012729 DOI: 10.1002/jmv.22220] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Measles virus (MV) genotyping is an important component of measles surveillance in the context of monitoring immunization program effectiveness and documenting MV elimination. The molecular epidemiology and genetic variability of circulating MV strains in Iran during the 2009-2010 were studied in consecutive MV isolates from throat swab and urine. Sequence information obtained from 41 cases based on the 456 nucleotides of the most variable region of the C-terminal part of the N-protein revealed that these sequences belonged to two different genotypes. This is the first description of the genetic characterization of sporadic MV genotype H1 cases in northern Iran. Cases were probably linked to MV importation from distant parts of Asia. The genotype H1 has not been detected in the Eastern Mediterranean Region. In addition, both sequence analysis and epidemiologic data indicated that the more recently detected genotype D4 viruses in Iran were related very closely to viruses that were detected in Pakistan, suggesting that these viruses may have been imported from Pakistan. J. Med. Virol. 83:2200-2207, 2011. © 2011 Wiley Periodicals, Inc.
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Affiliation(s)
- Vahid Salimi
- Department of Virology, Tehran University of Medical Sciences, Tehran, Iran
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Epidemiology and genetic relatedness of measles virus infection in Uttar Pradesh, India, during 2009-2010. Arch Virol 2012; 157:723-731. [DOI: 10.1007/s00705-012-1227-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2011] [Accepted: 12/09/2011] [Indexed: 01/19/2023]
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26
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Duraisamy R, Rota PA, Palani G, Elango V, Sambasivam M, Lowe L, Lopareva E, Ramamurty N. Molecular characterization of wild-type measles viruses in Tamil Nadu, India, during 2005-2006: Relationship of genotype D8 strains from Tamil Nadu to global strains. J Med Virol 2011; 84:348-57. [DOI: 10.1002/jmv.22244] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Biological feasibility of measles eradication. Virus Res 2011; 162:72-9. [PMID: 21963661 DOI: 10.1016/j.virusres.2011.09.023] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2011] [Revised: 09/16/2011] [Accepted: 09/17/2011] [Indexed: 11/21/2022]
Abstract
Because of the success of global measles control programs, the World Health Organization (WHO), along with its partner agencies, is once again considering the possibility of setting a target date for measles eradication. Measles would be the fourth viral agent to be eradicated joining the successful programs to eradicate smallpox and rinderpest virus, and the continuing effort to eradicate polio virus. A description of the recent progress toward measles eradication was recently published as a supplement in the Journal of Infectious Diseases (15 July, 2011, 204 (Suppl. 1)) and the reader is referred to this document for a detailed summary of the global status of measles control. This review will focus on the biologic and virologic aspects of measles eradication.
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Wairagkar N, Chowdhury D, Vaidya S, Sikchi S, Shaikh N, Hungund L, Tomar RS, Biswas D, Yadav K, Mahanta J, Das VNR, Yergolkar P, Gunasekaran P, Raja D, Jadi R, Ramamurty N, Mishra AC. Molecular epidemiology of measles in India, 2005-2010. J Infect Dis 2011; 204 Suppl 1:S403-13. [PMID: 21666192 DOI: 10.1093/infdis/jir150] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Measles is a childhood disease that causes great morbidity and mortality in India and worldwide. Because measles surveillance in India is in its infancy, there is a paucity of countrywide data on circulating Measles virus genotypes. This study was conducted in 21 of 28 States and 2 of 7 Union Territories of India by MeaslesNetIndia, a national network of 27 centers and sentinel practitioners. MeaslesNetIndia investigated 52 measles outbreaks in geographically representative areas from 2005 through June 2010. All outbreaks were serologically confirmed by detection of antimeasles virus immunoglobulin M (IgM) antibodies in serum or oral fluid samples. Molecular studies, using World Health Organization (WHO)-recommended protocols obtained 203 N-gene, 40 H-gene, and 4 M-gene sequences during this period. Measles genotypes D4, D7, and D8 were found to be circulating in various parts of India during the study period. Further phylogenetic analysis revealed 4 lineages of Indian D8 genotypes: D8a, D8b, D8c, and D8d. This study generated a large, countrywide sequence database that can form the baseline for future molecular studies on measles virus transmission pathways in India. This study has created support and capabilities for countrywide measles molecular surveillance that must be carried forward.
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Affiliation(s)
- Niteen Wairagkar
- WHO Regional Measles Reference Laboratory, National Institute of Virology, Pune, India.
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Castillo-Solorzano C C, Matus CR, Flannery B, Marsigli C, Tambini G, Andrus JK. The Americas: paving the road toward global measles eradication. J Infect Dis 2011; 204 Suppl 1:S270-8. [PMID: 21666172 DOI: 10.1093/infdis/jir166] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND The Region of the Americas set a goal of interrupting endemic measles virus transmission by the end of 2000. This decision was primarily based on rapid decreases in measles disease burden in pioneering countries that implemented Pan American Health Organization-recommended vaccination and surveillance strategies. Review of these strategies may inform measles elimination efforts in other regions. METHODS Results from the implementation of the measles elimination strategy in the Americas were compiled and analyzed over a 30-year period, which was divided into 4 phases: the early years of the Expanded Program on Immunization (1980-1986); the start-up phase for elimination (1987-1994); the elimination phase (1995-2002); and the postelimination phase (2003-2010). Factors that contributed to elimination and the challenges confronted during the postelimination phase are discussed. RESULTS An analysis of vaccination strategies over time highlights the transition from monovalent measles vaccine to the incorporation of measles-mumps-rubella vaccine administered in the routine program. Regional vaccination coverage increased during the period 1987-2010, sustained at ≥90% since 1998. Measles elimination efforts led to the implementation of 157 national vaccination campaigns, vaccinating a total of 440 million persons. Endemic measles virus transmission was interrupted in 2002. After elimination, measles importations and associated outbreaks occurred. Measles incidence has remained at <1 case per 1 million population since 2002. CONCLUSIONS The success of measles elimination strategies in the Americas suggests that global measles eradication is attainable.
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Affiliation(s)
- Carlos Castillo-Solorzano C
- Comprehensive Family Immunization, Pan American Health Organization, Washington, District of Columbia 20037, USA.
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30
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Morens DM, Holmes EC, Davis AS, Taubenberger JK. Global rinderpest eradication: lessons learned and why humans should celebrate too. J Infect Dis 2011; 204:502-5. [PMID: 21653230 DOI: 10.1093/infdis/jir327] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Affiliation(s)
- David M Morens
- Office of the Director, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland 20892, USA.
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31
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Kremer JR, Nkwembe E, Bola Oyefolu AO, Smit SB, Pukuta E, Omilabu SA, Adu FD, Muyembe Tamfum JJ, Muller CP. Measles virus strain diversity, Nigeria and Democratic Republic of the Congo. Emerg Infect Dis 2011; 16:1724-30. [PMID: 21029530 PMCID: PMC3294530 DOI: 10.3201/eid1611.100777] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Differences in epidemiologic patterns are only partially explained by vaccination practices. We investigated the genetic diversity of measles virus (MV) in Nigeria (2004–2005) and the Democratic Republic of the Congo (DRC) (2002–2006). Genotype B3 strains circulating in Kinshasa, DRC, in 2002–2003 were fully replaced by genotype B2 in 2004 at the end of the second Congo war. In Nigeria (2004–2005), two genetic clusters of genotype B3, both of which were most closely related to 1 variant from 1998, were identified. Longitudinal analysis of MV strain diversity in Nigeria suggested that only a few of the previously described 1997–1998 variants had continued to circulate, but this finding was concomitant with a rapid restoration of genetic diversity, probably caused by low vaccination coverage and high birth rates. In contrast, the relatively low genetic diversity of MV in DRC and the genotype replacement in Kinshasa reflect a notable improvement in local measles control.
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Affiliation(s)
- Jacques R Kremer
- Centre de Recherche Publique-Sante/Laboratoire National de Sante, Luxembourg, Luxembourg
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32
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Kessler JR, Kremer JR, Shulga SV, Tikhonova NT, Santibanez S, Mankertz A, Semeiko GV, Samoilovich EO, Tamfum JJM, Pukuta E, Muller CP. Revealing new measles virus transmission routes by use of sequence analysis of phosphoprotein and hemagglutinin genes. J Clin Microbiol 2011; 49:677-83. [PMID: 21106790 PMCID: PMC3043479 DOI: 10.1128/jcm.01703-10] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2010] [Accepted: 11/17/2010] [Indexed: 11/20/2022] Open
Abstract
With improved measles virus (MV) control, the genetic variability of the MV-nucleoprotein hypervariable region (NP-HVR) decreases. Thus, it becomes increasingly difficult to determine the origin of a virus using only this part of the genome. During outbreaks in Europe and Africa, we found MV strains with identical NP-HVR sequences. However, these strains showed considerable diversity within a larger sequencing window based on concatenated MV phosphoprotein and hemagglutinin genes (P/H pseudogenes). In Belarus, Germany, Russia, and the Democratic Republic of Congo, the P/H pseudogenes provided insights into chains of transmission, whereas identical NP-HVR provided none. In Russia, for instance, the P/H pseudogene identified temporal clusters rather than geographical clusters, demonstrating the circulation and importation of independent variants rather than large local outbreaks lasting for several years, as suggested by NP-HVR. Thus, by extending the sequencing window for molecular epidemiology, a more refined picture of MV circulation was obtained with more clearly defined links between outbreaks and transmission chains. Our results also suggested that in contrast to the P gene, the H gene acquired fixed substitutions that continued to be found in subsequent outbreaks, possibly with consequences for its antigenicity. Thus, a longer sequencing window has true benefits both for the epidemiological surveillance of measles and for the better monitoring of viral evolution.
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Affiliation(s)
- Julia R. Kessler
- Institute of Immunology, Centre de Recherche Public-Santé/Laboratoire National de Santé, WHO Regional Reference Laboratory for Measles and Rubella and WHO Collaboration Centre for Measles Research, Luxembourg, Luxembourg
| | - Jacques R. Kremer
- Institute of Immunology, Centre de Recherche Public-Santé/Laboratoire National de Santé, WHO Regional Reference Laboratory for Measles and Rubella and WHO Collaboration Centre for Measles Research, Luxembourg, Luxembourg
| | - Sergey V. Shulga
- WHO Regional Reference Laboratory for Measles and Rubella, Moscow, Russian Federation
| | - Nina T. Tikhonova
- WHO Regional Reference Laboratory for Measles and Rubella, Moscow, Russian Federation
| | - Sabine Santibanez
- WHO Regional Reference Laboratory for Measles and Rubella, Berlin, Germany
| | - Annette Mankertz
- WHO Regional Reference Laboratory for Measles and Rubella, Berlin, Germany
| | - Galina V. Semeiko
- The Republican Research and Practical Centre for Epidemiology and Microbiology, WHO National Measles and Rubella Laboratory, Minsk, Belarus
| | - Elena O. Samoilovich
- The Republican Research and Practical Centre for Epidemiology and Microbiology, WHO National Measles and Rubella Laboratory, Minsk, Belarus
| | | | - Elisabeth Pukuta
- Institut National de Recherche Biomédicale, Kinshasa, Democratic Republic of the Congo
| | - Claude P. Muller
- Institute of Immunology, Centre de Recherche Public-Santé/Laboratoire National de Santé, WHO Regional Reference Laboratory for Measles and Rubella and WHO Collaboration Centre for Measles Research, Luxembourg, Luxembourg
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33
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Baliraine FN, Bwogi J, Bukenya H, Seguya R, Kabaliisa T, Kisakye A, Mbabazi WB, Smit SB. Possible interruption of measles virus transmission, Uganda, 2006-2009. Emerg Infect Dis 2011; 17:110-3. [PMID: 21192868 PMCID: PMC3204633 DOI: 10.3201/eid1701.100753] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [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
To determine what measles virus genotype(s) circulated in Uganda after strategic interventions aimed at controlling/eliminating measles, we examined samples obtained during 2006-2009 and found only genotype B3.1, which had not been previously detected. Kenya was the likely source, but other countries cannot be excluded.
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Affiliation(s)
- Frederick N Baliraine
- Department of Medicine, Division of Infectious Diseases, University of California, San Francisco, California 94143-0811, USA.
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34
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Isolation and complete nucleotide sequence of the measles virus IMB-1 strain in China. Virol Sin 2010; 25:381-9. [PMID: 21221916 DOI: 10.1007/s12250-010-3158-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2010] [Accepted: 09/27/2010] [Indexed: 10/18/2022] Open
Abstract
The complete nucleotide sequence of the measles virus strain IMB-1, which was isolated in China, was determined. As in other measles viruses, its genome is 15,894 nucleotides in length and encodes six proteins. The full-length nucleotide sequence of the IMB-1 isolate differed from vaccine strains (including wild-type Edmonston strain) by 4%-5% at the nucleotide sequence level. This isolate has amino acid variations over the full genome, including in the hemagglutinin and fusion genes. This report is the first to describe the full-length genome of a genotype H1 strain and provide an overview of the diversity of genetic characteristics of a circulating measles virus.
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35
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Kessler JR, Kremer JR, Muller CP. Interplay of measles virus with early induced cytokines reveals different wild type phenotypes. Virus Res 2010; 155:195-202. [PMID: 20950658 DOI: 10.1016/j.virusres.2010.10.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2010] [Revised: 10/05/2010] [Accepted: 10/05/2010] [Indexed: 10/19/2022]
Abstract
Differential effects of measles virus (MV) on the innate immune response may influence virus spread and severity of disease. Using a representative panel of 22 MV strains including 14 different genotypes, we found that wild-type (wt) differ considerably in their sensitivity to type I interferon (IFN). The wt virus production was 2-47-fold lower in IFN-alpha treated Vero/hSLAM cells, whereas vaccine virus production was reduced only 2-3-fold. Sequence analysis of the MV-P/C/V gene, revealed no obvious amino acid mutations that correlated with the different phenotypes. Strains also widely differed in their ability to induce type I IFN, tumor necrosis factor (TNF) alpha and other cytokines in human A549/hSLAM cells. Some wt strains that were highly sensitive to type I IFN induced only low levels of these and other cytokines. In vitro wt strains that produced the 5' copy-back defective interfering RNAs (5'cb-diRNA) characterized by Shingai et al. (2007), induced high levels of cytokines that otherwise were only reached by vaccine strains. These 5'cb-diRNAs emerged only in virus cultures during multiple passaging and were not detectable in clinical samples of measles patients. These subgenomic RNAs are an important confounding parameter in passaged wt viruses which must be carefully assessed in all in vitro studies. The present data show that MV wt strains differ in their sensitivity and their ability to temper with the innate immune response, which may result in differences in virulence.
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Affiliation(s)
- Julia R Kessler
- Laboratoire National de Santé, Institute of Immunology, Centre de Recherche Public-Santé/WHO Regional Reference, 20A rue Auguste Lumière, L-1950 Luxembourg, Luxembourg
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36
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Hoang V, Tripp RA, Rota P, Dluhy RA. Identification of individual genotypes of measles virus using surface enhanced Raman spectroscopy. Analyst 2010; 135:3103-9. [PMID: 20838669 DOI: 10.1039/c0an00453g] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A spectroscopic assay based on surface-enhanced Raman spectroscopy (SERS) has been developed for rapid genotyping of the measles virus (MeV). Silver nanorods fabricated using an oblique angle vapor deposition method acted as the SERS-active substrate. The SERS spectra of four separate MeV genotypes, i.e. A, H1, D4 and D9, and two separate negative media control samples were analyzed using multivariate statistical methods. Principal components analysis (PCA) and hierarchical cluster analysis (HCA) successfully separated three of the four MeV genotypes studied. The MeV genotypes used in this study had >96% sequence similarity as monitored using the MeV hemagglutinin (H) gene, and the clustering seen in PCA and HCA mirrored this sequence diversity. For example, the MeV genotypes with the highest sequence diversity (~3%, A and H1) were the most widely separated in the PCA scores plot and HCA dendogram. Conversely, the MeV genotypes with the lowest sequence diversity (~0.5%, D4 and D9) could not be statistically differentiated. However, a supervised chemometric method, partial least squares-discriminant analysis (PLS-DA) was able to separate each of the four MeV strains, the two negative controls, and the background, with >90% sensitivity and >96% selectivity based solely on their inherent SERS spectra. These results demonstrate that SERS, in combination with multivariate statistical methods, is a highly sensitive and rapid viral identification and classification method that can be applied to MeV genotyping.
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Affiliation(s)
- Vinh Hoang
- Department of Chemistry, University of Georgia, Athens, GA 30602, USA
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37
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Haddad-Boubaker S, Rezq M, Smeo MN, Ben Yahia A, Abudher A, Slim A, Ben Ghorbel M, Ahmed H, Rota P, Triki H. Genetic characterization of clade B measles viruses isolated in Tunisia and Libya 2002-2009 and a proposed new subtype within the B3 genotype. Virus Res 2010; 153:258-64. [PMID: 20728482 DOI: 10.1016/j.virusres.2010.08.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2010] [Revised: 08/10/2010] [Accepted: 08/12/2010] [Indexed: 11/28/2022]
Abstract
Genetic characterization was conducted on 18 wild-type measles viruses, detected in Tunisia and Libya from 2002 to 2009. Sequence analysis of the 456 nucleotides in the carboxy terminus of the nucleoprotein (N) gene and the entire hemagglutinin (H) gene indicated that all isolates were in genotype B3. All of the viruses from 2002 to 2007 and some of the isolates from 2009 belonged to subtype B3.1. In contrast, 7 of the viruses isolated during 2008 and 2009 were quite divergent from all B3 isolates. The nucleotide sequences of the N gene of these 7 isolates differed from the sequences of the Ibadan and New York reference strain by an average of 3.1 and 4.4%, respectively. The H gene sequences differed by 1.1 and 2.6% with the same reference strains. This is the first report describing the genetic characteristics of measles viruses from clade B isolated in North Africa; the results suggest that these viruses represent a new subtype of genotype B3.
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Affiliation(s)
- Sondes Haddad-Boubaker
- Laboratory of Clinical Virology and WHO Regional Reference Laboratory for Poliomyelitis and Measles in Eastern Mediterranean Region, Institut Pasteur, Tunis, Tunisia.
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38
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Goodson JL, Perry RT, Mach O, Manyanga D, Luman ET, Kitambi M, Kibona M, Wiesen E, Cairns KL. Measles outbreak in Tanzania, 2006-2007. Vaccine 2010; 28:5979-85. [PMID: 20637771 DOI: 10.1016/j.vaccine.2010.06.110] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2010] [Revised: 06/23/2010] [Accepted: 06/30/2010] [Indexed: 11/19/2022]
Abstract
We conducted a measles outbreak investigation in Dar es Salaam, Tanzania. Surveillance data were analyzed; a susceptibility profile developed, and case-control study conducted. The age distribution of cases peaked among those <2, 5-7, and > or =18 years, corresponding to the age distribution of susceptibles. Risk factors included being unvaccinated (aOR=5.7, p<0.01) or having received one dose of vaccine compared to two (aOR=2.4, p=0.01), being younger, and having a less-educated caretaker. Vaccine effectiveness was 88% (one dose) and 96% (two doses). Results highlight the importance of receiving one dose of measles vaccine, and the added benefit of two doses.
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Affiliation(s)
- James L Goodson
- Centers for Disease Control and Prevention, Global Immunization Division, Atlanta, GA 30333, USA.
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39
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Ji Y, Xu S, Zhang Y, Zhu Z, Mao N, Jiang X, Ma C, Lu P, Wang C, Liang Y, Zheng H, Liu Y, Dai D, Zheng L, Zhou J, Wang S, Zhang Z, Wu S, Nan L, Li L, Liang X, Featherstone DA, Rota PA, Bellini WJ, Xu W. Genetic characterization of wild-type measles viruses isolated in China, 2006-2007. Virol J 2010; 7:105. [PMID: 20500809 PMCID: PMC2887432 DOI: 10.1186/1743-422x-7-105] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2010] [Accepted: 05/25/2010] [Indexed: 11/10/2022] Open
Abstract
Molecular characterization of wild-type measles viruses in China during 1995-2004 demonstrated that genotype H1 was endemic and widely distributed throughout the country. H1-associated cases and outbreaks caused a resurgence of measles beginning in 2005. A total of 210,094 measles cases and 101 deaths were reported by National Notifiable Diseases Reporting System (NNDRS) and Chinese Measles Laboratory Network (LabNet) from 2006 to 2007, and the incidences of measles were 6.8/100,000 population and 7.2/100,000 population in 2006 and 2007, respectively. Five hundred and sixty-five wild-type measles viruses were isolated from 24 of 31 provinces in mainland China during 2006 and 2007, and all of the wild type virus isolates belonged to cluster 1 of genotype H1. These results indicated that H1-cluster 1 viruses were the predominant viruses circulating in China from 2006 to 2007. This study contributes to previous efforts to generate critical baseline data about circulating wild-type measles viruses in China that will allow molecular epidemiologic studies to help measure the progress made toward China's goal of measles elimination by 2012.
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Affiliation(s)
- Yixin Ji
- WHO WPRO Regional Reference Measles Lab and State Key Laboratory for Molecular Virology & Genetic Engineering, National Institute for Viral Disease Control and Prevention, China Center for Disease Control and Prevention, Beijing 100050, China
| | - Songtao Xu
- WHO WPRO Regional Reference Measles Lab and State Key Laboratory for Molecular Virology & Genetic Engineering, National Institute for Viral Disease Control and Prevention, China Center for Disease Control and Prevention, Beijing 100050, China
| | - Yan Zhang
- WHO WPRO Regional Reference Measles Lab and State Key Laboratory for Molecular Virology & Genetic Engineering, National Institute for Viral Disease Control and Prevention, China Center for Disease Control and Prevention, Beijing 100050, China
| | - Zhen Zhu
- WHO WPRO Regional Reference Measles Lab and State Key Laboratory for Molecular Virology & Genetic Engineering, National Institute for Viral Disease Control and Prevention, China Center for Disease Control and Prevention, Beijing 100050, China
| | - Naiying Mao
- WHO WPRO Regional Reference Measles Lab and State Key Laboratory for Molecular Virology & Genetic Engineering, National Institute for Viral Disease Control and Prevention, China Center for Disease Control and Prevention, Beijing 100050, China
| | - Xiaohong Jiang
- WHO WPRO Regional Reference Measles Lab and State Key Laboratory for Molecular Virology & Genetic Engineering, National Institute for Viral Disease Control and Prevention, China Center for Disease Control and Prevention, Beijing 100050, China
| | - Chao Ma
- National Immunization Program, China Center for Disease Control and Prevention, China
| | - Peishan Lu
- Jiangsu Provincial Center for Disease Control and Prevention, China
| | - Changyin Wang
- Shandong Provincial Center for Disease Control and Prevention, China
| | - Yong Liang
- Hebei Provincial Center for Disease Control and Prevention, China
| | - Huanying Zheng
- Guangdong Provincial Center for Disease Control and Prevention, China
| | - Yang Liu
- Tianjin Provincial Center for Disease Control and Prevention, China
| | - Defang Dai
- Hunan Provincial Center for Disease Control and Prevention, China
| | - Lei Zheng
- Shanxi Provincial Center for Disease Control and Prevention, China
| | - Jianhui Zhou
- Jilin Provincial Center for Disease Control and Prevention, China
| | - Shuang Wang
- Jilin Provincial Center for Disease Control and Prevention, China
| | - Zhenying Zhang
- Henan Provincial Center for Disease Control and Prevention, China
| | - Shengwei Wu
- Guizhou Provincial Center for Disease Control and Prevention, China
| | - Lijuan Nan
- Neimeng Provincial Center for Disease Control and Prevention, China
| | - Li Li
- National Immunization Program, China Center for Disease Control and Prevention, China
| | - Xiaofeng Liang
- National Immunization Program, China Center for Disease Control and Prevention, China
| | | | - Paul A Rota
- Division of Viral Diseases, Centers for Disease Control and Prevention, 1600 Clifton Road, Atlanta, GA 30333, USA
| | - William J Bellini
- Division of Viral Diseases, Centers for Disease Control and Prevention, 1600 Clifton Road, Atlanta, GA 30333, USA
| | - Wenbo Xu
- WHO WPRO Regional Reference Measles Lab and State Key Laboratory for Molecular Virology & Genetic Engineering, National Institute for Viral Disease Control and Prevention, China Center for Disease Control and Prevention, Beijing 100050, China
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40
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Stack JC, Welch JD, Ferrari MJ, Shapiro BU, Grenfell BT. Protocols for sampling viral sequences to study epidemic dynamics. J R Soc Interface 2010; 7:1119-27. [PMID: 20147314 DOI: 10.1098/rsif.2009.0530] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
With more emphasis being put on global infectious disease monitoring, viral genetic data are being collected at an astounding rate, both within and without the context of a long-term disease surveillance plan. Concurrent with this increase have come improvements to the sophisticated and generalized statistical techniques used for extracting population-level information from genetic sequence data. However, little research has been done on how the collection of these viral sequence data can or does affect the efficacy of the phylogenetic algorithms used to analyse and interpret them. In this study, we use epidemic simulations to consider how the collection of viral sequence data clarifies or distorts the picture, provided by the phylogenetic algorithms, of the underlying population dynamics of the simulated viral infection over many epidemic cycles. We find that sampling protocols purposefully designed to capture sequences at specific points in the epidemic cycle, such as is done for seasonal influenza surveillance, lead to a significantly better view of the underlying population dynamics than do less-focused collection protocols. Our results suggest that the temporal distribution of samples can have a significant effect on what can be inferred from genetic data, and thus highlight the importance of considering this distribution when designing or evaluating protocols and analysing the data collected thereunder.
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Affiliation(s)
- J Conrad Stack
- Department of Biology, Pennsylvania State University, University Park, PA, USA
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Abstract
Public health preparedness requires effective surveillance of and rapid response to infectious disease outbreaks. Inclusion of research activities within the outbreak setting provides important opportunities to maximize limited resources, to enhance gains in scientific knowledge, and ultimately to increase levels of preparedness. With rapid advances in laboratory technologies, banking and analysis of human genomic specimens can be conducted as part of public health investigations, enabling valuable research well into the future.
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Affiliation(s)
- Nicole F Dowling
- Office of Public Health Genomics, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
| | - Marta Gwinn
- Office of Public Health Genomics, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
| | - Alison Mawle
- National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
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42
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Cheng WY, Lee L, Rota PA, Yang DCF. Molecular evolution of measles viruses circulated in Taiwan 1992-2008. Virol J 2009; 6:219. [PMID: 20003242 PMCID: PMC2797522 DOI: 10.1186/1743-422x-6-219] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2009] [Accepted: 12/10/2009] [Indexed: 11/17/2022] Open
Abstract
Genetic analyses of viral samples from 74 laboratory confirmed measles cases occurring in Taiwan during 1992-2008 identified six viral genotypes D3, D5, D9, G2, H1 and H2. The most frequently detected genotype, H1, was associated with outbreaks in 1994 and 2002, and was the likely indigenous genotype in 1992. In response to the outbreaks, two catch-up campaigns were launched and a routine second dose of measles, mumps, and rubella vaccine at entry to elementary school was introduced. The vaccination campaigns successfully reduced the number of measles cases in Taiwan, and many of the more recent cases can be traced to importations, primarily from other Asian countries. A number of measles genotypes which were associated with outbreaks in other Asian countries were detected among the more recent cases. The more recent genotype H1 viruses had sequences that were identical to those currently circulating in China or associated with international importation of virus.
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Affiliation(s)
- Wen-Yueh Cheng
- Research and Diagnostic Center, Centers for Disease Control, DOH, Taiwan.
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43
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Yoon JJ, Krumm SA, Ndungu JM, Hoffman V, Bankamp B, Rota PA, Sun A, Snyder JP, Plemper RK. Target analysis of the experimental measles therapeutic AS-136A. Antimicrob Agents Chemother 2009; 53:3860-70. [PMID: 19528268 PMCID: PMC2737882 DOI: 10.1128/aac.00503-09] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2009] [Revised: 05/19/2009] [Accepted: 06/08/2009] [Indexed: 01/06/2023] Open
Abstract
No effective therapeutic is currently in place for improved case management of severe measles or the rapid control of outbreaks. Through high-throughput screening, we recently identified a novel small-molecule class that potently blocks activity of the measles virus (MeV) RNA-dependent RNA polymerase (RdRp) complex in transient replicon assays. However, the nature of the block in RdRp activity and the physical target of the compound remained elusive. Through real-time reverse transcription-PCR analysis, we demonstrate that the lead compound AS-136A blocks viral RNA synthesis in the context of an infection. Adaptation of different MeV strains to growth in the presence of the compound identified three candidate hot spots for resistance that are located in conserved domains of the viral polymerase (L protein) subunit of the RdRp complex. Rebuilding of individual mutations in RdRp-driven reporter assays and recombinant MeV traced the molecular basis for resistance to specific mutations in L. Mutations responsible for resistance cluster in the immediate vicinity of the proposed catalytic center for phosphodiester bond formation and neighboring conserved domains of L, providing support for effective inhibition of a paramyxovirus RdRp complex through interaction of a nonnucleoside small-molecule inhibitor with the L protein. Resistance mutations are located in regions of L that are fully conserved among viral isolates, and recombinant MeV harboring individual resistance mutations show some delay in the onset of viral growth in vitro. Taken together, these data support the hypothesis that acquiring mutations in these L domains may reduce virus fitness.
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Affiliation(s)
- Jeong-Joong Yoon
- Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA 30322, USA
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