Blood clots

Throbbing or cramping pain, swelling, redness and warmth in a leg or arm is the main symptom of a blood clot (Photo: Shutterstock)

The signs and symptoms of a blood clot - and what to do if you think you have on... Alex Nelson

AstraZeneca said patient safety was its “highest priority” (Photo: Getty Images)

Some European countries suspend rollout of Oxford Covid jab - but regulator says... Claire Schofield