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

Despite widespread vaccination, household transmission of SARS-CoV-2 remained common. Prior immunity in contacts and lower viral load in index cases reduced risk. These findings underscore the central role of households in ongoing spread and highlight the value of booster vaccination and genomic surveillance to clarify transmission pathways and inform prevention policies.