High proportion of asymptomatic and presymptomatic COVID-19 infections in travelers and returning residents to Brunei.
Wong, Justin;Abdul Aziz, Anita B Z;Chaw, Liling;Mahamud, Abdirahman;Griffith, Matthew M;Ying-Ru, L O;Naing, Lin;
journal of travel medicine2020
282
wong2020highjournal
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.