Boris Johnson said on Monday he was looking at toughening border quarantine rules because of the risk of “vaccine-busting” new coronavirus variants.New variants of the virus that causes COVID-19 are opening up the prospect of a much longer battle against the pathogen than previously thought.
Scientists fear the new variants may be more deadly, and that vaccines may be less effective against them.“We have to realize there is at least the theoretical risk of a new variant that is a vaccine-busting variant coming in — we’ve got to be able to keep that under control,” Johnson told reporters at a vaccination centre. ‘Realistic possibility’ COVID-19 variant from U.K.