Coronavirus live news: South Korea to close bars and clubs amid fourth wave fears

Coronavirus live news: South Korea to close bars and clubs amid fourth wave fears

France’s top health body is set to announce today that recipients of a first dose of AstraZeneca’s Covid-19 vaccine who are under 55 should get a second shot with a new-style messenger-RNA vaccine, according to two sources aware of the plans. Two mRNA vaccines, one from Pfizer and BioNTech and one from Moderna, are approved for use in France. Messenger RNA vaccines prompt the human body to make a protein that mimics part of the virus, triggering an immune response, while traditional vaccines such as AstraZeneca’s use an inactivated virus to carry a protein from the pathogen to do the same thing. Vaccination programmes have stuttered in Europe and elsewhere in the last month, since a very few mostly young recipients of the AstraZeneca shot were found to have suffered extremely unusual blood clots, leading some countries to suspend its use as a precaution. Most have resumed using the shot, although some have done so with age restrictions. In France, the HAS advised on March 19 that only people aged 55 and over should receive the AstraZeneca vaccine, which had …
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