Mayo expert on boosters and vaccinations kimt.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from kimt.com Daily Mail and Mail on Sunday newspapers.
As Covid-19 surged last year, governments worldwide touted the hope of "herd immunity," a promised land where the virus stopped spreading exponentially because enough people were protected against it. That's now looking like a fantasy.
Bad news about Covid-19 herd immunity mybroadband.co.za - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from mybroadband.co.za Daily Mail and Mail on Sunday newspapers.
Nature isnt going to solve the problem, either. Its unclear how long natural immunity gained from surviving Covid-19 will last, and whether it will be effective at fighting off new strains. Future variants, including some that could evade immunity even more efficiently than delta, raise questions about how and when this will be over.