The pharmaceutical giant Pfizer says it believes its Covid-19 vaccine is 90% effective - but how easy will it be to transport and who will get first access? Show more
Discover 11,128,835 listings and 279,438 playable programmes from the BBC
The pharmaceutical giant Pfizer says it believes its Covid-19 vaccine is 90% effective - but how easy will it be to transport and who will get first access? Show more