Large SARS-CoV-2 Outbreak Caused by Asymptomatic Traveler, China

Abstract

An asymptomatic person infected with severe acute respiratory syndrome coronavirus 2 returned to Heilongjiang Province, China, after international travel. The traveler’s neighbor became infected and generated a cluster of >71 cases, including cases in 2 hospitals. Genome sequences of the virus were distinct from viral genomes previously circulating in China.

Keywords

• respiratory infections
• severe acute respiratory syndrome coronavirus 2
• SARS-CoV-2
• SARS
• COVID-19
• coronavirus disease