Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2020 Aug 20;27(5):taaa066.
doi: 10.1093/jtm/taaa066.

High proportion of asymptomatic and presymptomatic COVID-19 infections in air passengers to Brunei

Justin Wong  1 , Anita B Z Abdul Aziz  2 , Liling Chaw  3 , Abdirahman Mahamud  4 , Matthew M Griffith  5 , Ying-Ru Lo  6 , Lin Naing  3
Affiliations

High proportion of asymptomatic and presymptomatic COVID-19 infections in air passengers to Brunei

Justin Wong et al. J Travel Med. .

Abstract

We report early findings from COVID-19 cases in Brunei suggesting a remarkably high proportion of asymptomatic (12%) and presymptomatic (30%) cases. This proportion was even higher in imported cases. These have implications for measures to prevent onward local transmission and should prompt reconsideration of current testing protocols and safe de-escalation of social distancing measures.

PubMed Disclaimer