Advertisement Britain could face even more super-infectious coronavirus variants because surging infections across the globe fuel the chances of the pathogen mutating to beat the immune system and vaccines, scientists say. More than 90million Covid-19 cases have been recorded worldwide since the pandemic began, with numbers surging 33.8 per cent in the last two months alone. And the spiralling cases will only trigger more mutations because it gives the virus more opportunity to evolve, infectious disease experts fear. Mutations could render vaccines useless, experts fear. Number 10's top scientists believe the current crop of jabs will still work against any of the recently-spotted variants - but may be slightly less effective.