Second dose of AstraZeneca Covid vaccine: FAQs about blood clots, safety, risks and symptoms

Rare but serious blood clots have been linked to the AstraZeneca Covud-19 vaccine. Here are answers to some key questions.

Rare but serious blood clots that have been linked to the AstraZeneca COVID-19 vaccine have many people — especially those who have already had one dose of the vaccine — looking for information. Here are answers to some key questions. If I had a first dose of the AstraZeneca COVID-19 vaccine, should I have concerns about safety? As long as there is a risk, you should always be aware and informed. A risk of very serious harm, including death, does exist, though it is very small: about one in 55,000 for the first dose.