toggle menuMENU Can I have a booster jab if I've recently had Covid? Question:Can I have a booster jab if I've recently had Covid?Answer: If you’ve tested positive for Covid-19, you need to wait four weeks (28 days) from the day of your positive test to have your booster This gap will help to separate any side effects of the vaccine from effects of your illness If you’ve already booked your booster appointment and then test positive, make sure to log on to the NHS website or call NHS 119.