There are around 4,000 variants of coronavirus, says British minister

There are around 4,000 coronavirus variants around the world prompting vaccine manufacturers, including Pfizer Inc and AstraZeneca, to try to improve their shots, a British minister said.
 
Thousands of variants of the type of coronavirus that causes Covid-19 have been documented as the virus mutates, including the so-called British, South African and Brazilian variants which appear to spread more swiftly than others.
 
British Vaccine Deployment Minister Nadhim Zahawi said it was very unlikely that the current vaccines would not work against the new variants.
 
"Its very unlikely that the current vaccine won't be effective on the variants