Q&A: Should I be concerned about the Oxford/AstraZeneca vaccine?

Some nations have halted use of the AstraZeneca vaccine after a small number of reports of blood clots (PA)
Thailand has said it will delay use of the AstraZeneca Covid-19 vaccine after several European countries temporarily suspended the jabs following reports of people suffering blood clots.
Here, we take a look at the key questions surrounding the situation.