These are important details which the MHRA always consider when assessing candidate vaccines for use. For these vaccines, like lots of others, they have identified that some people might feel slightly unwell, but they report that no significant side effects have been observed in the tens of thousands of people involved in trials. All patients will be provided with information on the vaccine they have received, how to look out for any side effects, and what to do if they do occur, including reporting them to the MHRA.