Imperial College London
Another study suggests variant is milder but more infectious.
Imperial College indicates people are 15 to 20% less likely to need admission to hospital – and promising research in Scotland and South Africa finds similar.
Downing Street reassurance comes as European Medicines Agency agrees the jab is safe.
A number of European countries have temporarily suspended the rollout of the Oxford/AstraZeneca vaccine.
While infections across the country have fallen by two thirds since January, some areas are showing worrying trends.
Imperial College London’s influential React study shows marked decline from January into February.
Symptoms of long Covid include ongoing fatigue, loss of taste or smell, respiratory and cardiovascular problems and mental health issues.
Scientists at Imperial College London believe most Covid cases could be detected if these signs were considered.
Imperial College London suggests bleak death toll even with three million doses a week.
One in 64 people had disease in England between January 6 and 22 – and signs of drop in cases not as sharp as last May.