Based on the best data, one dose of Pfizer-BioNTech or Moderna vaccine appears at least 80% effective against symptomatic COVID-19, for at least 21 days.
Norway advises caution in use of Pfizer vaccine for the most frail reuters.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from reuters.com Daily Mail and Mail on Sunday newspapers.
The WHO and many health experts say that there's no evidence linking AstraZeneca's Covid-19 vaccine with blood clots. But some EU countries have paused their rollout of the jab anyway.
Denmark, Norway and Iceland suspend AstraZeneca COVID shots after blood clot reports japantoday.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from japantoday.com Daily Mail and Mail on Sunday newspapers.
Should I be concerned about the Oxford/AstraZeneca vaccine? maldonandburnhamstandard.co.uk - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from maldonandburnhamstandard.co.uk Daily Mail and Mail on Sunday newspapers.