Concerns have been mounting over reports of rare but serious blood clots in a small number of recipients of the Oxford/AstraZeneca vaccine, leading to a UK recommendation on Wednesday that healthy adults under 30 should have an alternative jab if they can. We take a look at the latest information and guidance.

All medications including vaccines have some side-effects. The most common with the Covid jabs are mild and short-lived, including localised soreness, fatigue or aches and headaches.

However the Oxford/AstraZeneca jab has been linked to a small but concerning number of reports of blood clots combined with low platelet counts (platelets are cell fragments in our blood that help it to clot).