Exclusive: head of key research into third dose says it may be better to prioritise vulnerable firstCoronavirus – latest updatesSee all our coronavirus coverageThere is “almost certainly no urgency” to press ahead with booster shots for healthy adults …
Blood clot risk greater after Covid infection than after vaccination
Analysis of 29m people finds danger of infection with Sars-Cov-2 far outweighs the risks of having jabCoronavirus – latest updatesBBC presenter Lisa Shaw died of Covid vaccine complications, coroner findsThe chances of developing dangerous blood clots …
Female hummingbirds look like males to avoid attacks, study suggests
Some females found to have evolved with bright plumage, which seems to protect against male aggressionThey may zip around looking cute and sociable, but the world of hummingbirds is rife with aggression. Now it looks like some female hummingbirds have …
Jabbed adults infected with Delta ‘can match virus levels of unvaccinated’
Researchers say implications for transmission remain unclear but reaching herd immunity even more challengingCoronavirus – latest updatesSee all our coronavirus coverageFully vaccinated adults can harbour virus levels as high as unvaccinated people if …