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

The Lancet Regional Health - Southeast Asia 2026 Open access

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Authors: Woottichai Khamduang, Pitaya Suebtam, Intira Jeannie Collins, Patumrat Sripan, Kittipan Chalom, Sayamon Hongjaisee, Nang Kham-Kjing, Nantawan Wangsaeng, Premmarin Inmonthian, Aphirak Pinasu, Napatsakorn Kohklang, Mathis Arnal
+7 more Moira J. Spyer, Ilse Steffens-Westerhof, Apinun Aramrattana, Marc Lallemant, Chaisiri Angkurawaranon, Patricia C.J.L. Bruijning-Verhagen, Nicole Ngo-Giang-Huong
DOI: 10.1016/j.lansea.2025.100711
Cited by: 0
References: 27

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 (

Fields of Study & Subjects

COVID-19 epidemiological studies COVID-19 and Mental Health Infection Control and Ventilation

Publication details

Journal / source
The Lancet Regional Health - Southeast Asia
Volume
44
Pages
100711–100711
Publication date
1 January 2026
Language
EN