Importation and Human-to-Human Transmission of a Novel Coronavirus in Vietnam

Abstract
The emergence and spread of a novel coronavirus (2019-nCoV) from Wuhan, China, has become a global health concern.1 Since the detection of the coronavirus in late December 2019, several countries have reported sporadic imported cases among travelers returning from China.2 We report one family cluster of 2019-nCoV originating from a Chinese man.