Four strains of nCoV strain appeared in Vietnam

Originating from the original Wuhan, Vietnam has so far recorded four nCoV strains including British, South African, African Rwanda and one G mutant. Covid-19 first appeared on December 31, 2019, in Wuhan city, Hubei province, central China. The first patients were all buyers and sellers at the Huanan Seafood Market. It is caused by a […]