The first confirmed case of coronavirus reinfection in the US has cast doubts about “herd immunity” from the virus and worried scientists because the 25-year-old Nevada man who contracted the virus became more seriously ill following the second infection. Senior…
CORONAVIRUS immunity could last for only six months and see Brits forced to get yearly vaccine injections. New research has cast doubt over proposals to introduce immunity passports, which would allow people who have had Covid-19 to socialise and return…