MedRxiv
MedRxiv
3 years ago

SARS-CoV-2 seroprevalence in Chattogram, Bangladesh before a National Lockdown, March-April 2021

Bhuiyan, T. R., Dent Hulse, J., Hegde, S., Akhtar, M., Islam, T., Hasan Khan, Z., Khan, I. I., Rashid, M., Rashid, R., Shirin, T., Gurley, E. S., Khan, A. I., Azman, A. S., Qadri, F.
The absence of population-based seroprevalence estimates in Bangladesh have impeded efforts to understand the relatively low reported mortality and incidence rates of SARS-CoV-2 in this country. We report findings of a representative serosurvey of the Sitakunda subdistrict in the Chattogram division of Bangladesh before a nationwide lockdown in April 2021. After adjusting for age, sex, household clustering and test performance using a Bayesian modeling approach, we estimate the seroprevalence of SARS-CoV-2 to have been 63.1% (56.2-60.8%) in Sitakunda during this period. These results illustrate that going into the national lockdown in April 2021, the majority of this population had already been infected despite a relatively low incidence of medically attended COVID-19.

Publisher URL: http://medrxiv.org/cgi/content/short/2021.07.16.21260611v1

DOI: 10.1101/2021.07.16.21260611

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