Household SARS-CoV-2 transmission during Omicron wave in Chiang Mai, Thailand: a prospective observational study.

ABSTRACT:

Background

SARS-CoV-2 transmission studies involving children in Thailand have been relatively limited to the early waves with the alpha and delta variants. Our study aims to address these gaps by examining household transmission in Chiang Mai, northern Thailand, during the Omicron wave in a post vaccination period.

Methods

This prospective observational study enrolled households comprising a confirmed COVID-19 index patient with at least one uninfected contact and a child (<18 years of age who maybe an index or contact). Participant data, nasopharyngeal swabs, and blood samples were collected at entry and final visit. Participants recorded daily symptoms for 21 days and self-administered SARS-CoV-2 antigen tests every other day for 14 days. Incident infections were confirme

SUBMITTER: Khamduang W 

PROVIDER: S-EPMC12810560 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature