EU regulators are reviewing reports of low blood platelets in patients who received any of the three approved COVID-19 vaccines from Pfizer/BioNTech, AstraZeneca and Moderna.
The rollout of the US COVID-19 vaccination programme slowed up this week because manufacturing delays mean no new doses of the recently approved Johnson & Johnson vaccine are available.
A laboratory study suggests Pfizer and BioNTech’s COVID-19 vaccine Comirnaty could be effective against a Brazilian variant of the SARS-CoV-2 virus – known as P.1 – that is worrying health
Both the Pfizer/BioNTech and Oxford University/AstraZeneca COVID-19 vaccines are highly effective in reducing COVID-19 infections among older people, according to an emerging study data.
Two researchers have suggested that the second dose of Pfizer and BioNTech’s COVID-19 vaccine could be delayed, as this would increase the number of people that can be protected while suppl