Serological and Molecular Epidemiology of Chikungunya Virus Infection in Vietnam, 2017–2019
Viruses, ISSN: 1999-4915, Vol: 15, Issue: 10
2023
- 2Citations
- 14Captures
- 1Mentions
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Metrics Details
- Citations2
- Citation Indexes2
- Captures14
- Readers14
- 14
- Mentions1
- News Mentions1
- News1
Most Recent News
Reports Summarize Chikungunya Virus Study Results from Nagasaki University (Serological and Molecular Epidemiology of Chikungunya Virus Infection in Vietnam, 2017-2019)
2023 NOV 14 (NewsRx) -- By a News Reporter-Staff News Editor at Genomics & Genetics Daily -- Investigators discuss new findings in Chikungunya virus. According
Article Description
Chikungunya fever is an acute febrile illness caused by the chikungunya virus (CHIKV), which is transmitted by Aedes mosquitoes. Since 1965, only a few studies with limited scope have been conducted on CHIKV in Vietnam. Thus, this study aimed to determine the seroprevalence and molecular epidemiology of CHIKV infection among febrile patients in Vietnam from 2017 to 2019. A total of 1063 serum samples from 31 provinces were collected and tested for anti-CHIKV IgM and IgG ELISA. The 50% focus reduction neutralization test (FRNT) was used to confirm CHIKV-neutralizing antibodies. Quantitative real-time RT–PCR (RT–qPCR) was performed to confirm the presence of the CHIKV genome. The results showed that 15.9% (169/1063) of the patients had anti-CHIKV IgM antibodies, 20.1% (214/1063) had anti-CHIKV IgG antibodies, 10.4% (111/1063) had CHIKV-neutralizing antibodies, and 27.7% (130/469) of the samples were positive in RT–qPCR analysis. The E1 CHIKV genome sequences were detected among the positive RT–qPCR samples. Our identified sequences belonged to the East/Central/South/African (ECSA) genotype, which has been prevalent in Vietnam previously, suggesting CHIKV has been maintained and is endemic in Vietnam. This study demonstrates a high prevalence of CHIKV infection in Vietnam and calls for an annual surveillance program to understand its impact.
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