Coronavirus mutates into second strain which is more aggressive and contagious

The study found that a more aggressive type of the new coronavirus associated with the disease outbreak in Wuhan accounted for about 70% of analysed strains.

Scientists from Peking University said they had found that two main types of the new coronavirus could be causing infections

Scientists in China studying the viral disease outbreak's origin said they had found that two main types of the new coronavirus could be causing infections.