BBCNEWS BBC News December 28, 2021 15:04:00
Variant, like previous variants, infects us initially in the upper airways. there's nothing about vaccination that prevents that happening. as time goes on and more of the population has been infected or vaccinated, our immune resistance against infection and against severity of symptoms is going up. one of the things authorities are clearly reacting to is the fact that while hospitalisation rates are going up relatively slowly, relative to case rates, case rates are climbing at a very high rate. so there is a pressure to react but also an awareness that very likely our immune systems are comi...