Like all medicines, vaccines can cause side effects. Most of these are mild and short term, lasting no longer than a week, and not everyone gets them. These may include:
If required, paracetamol can help relieve some discomfort.
There have been reports of extremely rare cases of blood clots. The Oxford/AstraZeneca vaccine is safe, effective and has already saved thousands of lives. The MHRA, and the Joint Committee on Vaccination and Immunisation (JCVI) have both said that the benefits of the vaccine far outweigh the risks for the vast majority of adults.
The JCVI advises as a precaution that it’s preferable for people under the age of 40 with no underlying health conditions to be offered an alternative vaccine where possible once they are eligible.