Open wide: A health worker carrying out a Covid-19 test on a resident at a testing vehicle in Shenyang, Liaoning province. — AFP
BEIJING: The recent Covid-19 outbreak in Dalian, Liaoning province, could have been triggered by imported sources, a health official said at a news conference.
“The possibility of domestic transmission can be preliminarily ruled out, ” said Zhao Zuowei, director of the Dalian Health Commission, yesterday.
