The WHO is observing all types of virus that lead to coronavirus infections. There have been mutations observed in these viruses which lead to newer forms emerging. Recently, the WHO updated the pandemic bulletin declared a new coronavirus variant, ‘Mu’, as “variant of interest”. This new strain of the virus was first discovered in Columbia in January this year.

The Mu variant, whose scientific name is B.1.621, has been found in 39 countries of South America and Europe as of yet.