A4 leaflet, 'COVID-19 vaccination and blood clotting', Public Health England and NHS, product code COV2021700 V2, 2021

At the time this leaflet was published over 34 million people had a COVID-19 vaccination. However, after 7 April 2021, advice about which vaccine to have changed. At this time, three vaccines were approved for use. The double-sided guide gives information about the elevated, yet extremely rare, risk of developing blood clotting problems following the Oxford AstraZeneca vaccine. Following guidance from the Joint Committee on Vaccination and Immunisation, this leaflet details which vaccine a person should be offered depending on their age and underlying health conditions. Anyone over 40 was offered any of the approved vaccines. Anyone under the age of 39 was offered alternatives to the Oxford Astra Zeneca vaccine. For those who already had one dose of the Oxford AstraZeneca vaccine with no adverse effects were advised to have their second dose.