Covid-19: One dose of vaccine cuts risk of passing on infection by as much as 50%, research shows
Covid-19: US will send 60 million AstraZeneca doses abroad as domestic demand falls
28 April 2021UK orders 60m Pfizer vaccine doses for booster programme
28 April 2021Covid-19: One dose of vaccine cuts risk of passing on infection by as much as 50%, research shows
Adults infected with covid-19 three weeks after receiving one dose of the Pfizer-BioNTech or Oxford-AstraZeneca vaccine were 38-49% less likely to pass the virus on to their household contacts than…
