ArticleTropical medicine & international health : TM & IH2022
Seroprevalence of SARS-CoV-2 among high-density communities and hyper-endemicity of COVID-19 in Vietnam.
Article in Tropical medicine & international health : TM & IH, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Severity predictors for multisystemic inflammatory syndrome in children after SARS-CoV-2 infection in Vietnam.Scientific reports · 2024Article
- Article
- Aetiology of Acute Undifferentiated Fever Among Children Under the Age of Five in Vietnam: A Prospective Study.Journal of epidemiology and global health · 2023Article
- SARS-CoV-2 seroepidemiology in Mongolia, 2020-2021: a longitudinal national study.The Lancet regional health. Western Pacific · 2023Article
- Seroprevalence of SARS-CoV-2 among high-density communities and hyper-endemicity of COVID-19 in Vietnam.Tropical medicine & international health : TM & IH · 2022Article
- The effect of vaccination beliefs regarding vaccination benefits and COVID-19 fear on the number of vaccination injections.Frontiers in psychology · 2022Article
- Circulation of human respiratory syncytial virus and new ON1 genotype in northern Viet Nam, 2017-2020.Western Pacific surveillance and response journal : WPSARArticle
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Authors and funding
12 authors.
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Abstract
objectiveTo assess the magnitude of active and recovering COVID-19 patients among at-risk communities and to identify the factors associated with positive serology.
methodsFour hundred and eighty-three close contacts of COVID-19 patients residing in Ho Chi Minh City, Vietnam, during the fourth wave of the COVID-19 epidemic (September and October 2021) were included. Five weeks after exposure to a COVID-19 patient, they underwent a serology test using the BIOSYNEX COVID-19 BSS kit.
resultsThe median age of participants was 37 years. A total of 34.6% individuals presented at least one clinical symptom between the time of contact with the COVID-19 patient and inclusion in study. A total of 1.7% unvaccinated individuals tested positive for SARS-CoV-2 using real-time PCR, and 9.5% had evidence of recent infection (positive PCR and/or IgM). A further 26.7% unvaccinated individuals presented evidence of a past infection (positive IgG only). Socio-demographic characteristics, vaccination status and clinical symptoms were not associated with a positive IgM test.
conclusionThis is the first serosurvey conducted during the fourth wave of the epidemic in Vietnam. It revealed a seropositivity rate higher than in previous studies and confirmed the hyperendemicity of SARS-CoV-2. Testing using rapid serological tests proved to be a reliable, easy-to-use method and enabled a rapid estimation of the burden of COVID-19.
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