COVID-19 transmission among healthcare workers at a quarantine facility in Thailand: genomic and outbreak investigations

Atsawawaranunt, K. et al. (2021) COVID-19 transmission among healthcare workers at a quarantine facility in Thailand: genomic and outbreak investigations. American Journal of Tropical Medicine and Hygiene, 105(2), pp. 421-424. (doi: 10.4269/ajtmh.21-0344) (PMID:34170846) (PMCID:PMC8437180)

Abstract

During the COVID-19 pandemic, Thailand implemented a quarantine program at approved quarantine facilities for every international traveler. Here, we report an epidemiological and genomic investigation of a COVID-19 cluster consisting of seven healthcare workers (HCWs) at a quarantine facility and its partnered hospital in Thailand. Outbreak investigations were implemented to obtain contact tracing data and to establish chains of transmission. Genomic sequencing of SARS-CoV-2 with samples within the cohort was performed. Investigations of 951 HCWs and staff with quarantined travelers were implemented to determine the chain of transmission. Genomic and outbreak investigations identified the international travelers infected with the B.1.1.31 SARS-CoV-2 lineage as the source of this outbreak. The genomic data and the investigated timeline revealed a putative transmission chain among HCWs, pointing toward the transmission via the use of common living quarters at the investigated quarantine site. The evaluation of this cohort has led to a policy recommendation on quarantine facility management. International travel quarantine is an important strategy to contain importation of COVID-19 cases. However, a quarantine facility is likely to become a potential hotspot, requiring thorough preventive measures. Reducing the exposure risk by providing private living quarters and scheduling clinical duties at a quarantine site separated from the conventional healthcare workforce have been implemented.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Loesbanluechai, Ms Duangkamon
• Authors: Atsawawaranunt, K., Kochakarn, T., Kongklieng, A., Panwijitkul, P., Tragoolpua, R., Jaradilokkul, K., Kaewmalang, P., Loesbanluechai, D., Kotanan, N., Joonlasak, K., Batty, E. M., Mungaomklang, A., Pawun, V., Chantratita, W., and Chookajorn, T.
• College/School: College of Medical Veterinary and Life Sciences > School of Biodiversity, One Health & Veterinary Medicine
• Journal Name: American Journal of Tropical Medicine and Hygiene
• Publisher: American Society of Tropical Medicine and Hygiene
• ISSN: 0002-9637
• ISSN (Online): 1476-1645
• Copyright Holders: Copyright © 2021 by The American Society of Tropical Medicine and Hygiene
• First Published: First published in American Journal of Tropical Medicine and Hygiene 105(2):421-424
• Publisher Policy: Reproduced under a Creative Commons license