6.19pm EDT18:19
Since rare but severe clotting was seen in some people following vaccination with AstraZeneca’s Covid-19 vaccine, researchers worldwide have been grappling to understand why the clotting syndrome, known as “thrombosis with thrombocytopenia” (clotting with a low platelet count), occurs.
Melissa Davey brings you up to speed here:
5.32pm EDT17:32
All over-50s in England have been offered a coronavirus vaccine a few days before the mid-April deadline set by the government – meaning the second phase of the rollout to younger cohorts can now begin.
Despite fears of a supply slowdown and possible knock in confidence after a change in advice on who could get the Oxford/AstraZeneca jab, Boris Johnson hailed the passing of “another hugely significant milestone”.
With more than 32 million people now having had a first dose and 7.6 million of those having received their second, the prime minister said “many thousands of lives” had been saved.
3.34pm EDT15:34
Surge testing deployed in south London after South African variant found
Updated
at 3.35pm EDT