The AstraZeneca COVID-19 vaccine has made headlines across the world for its potential links to a very rare, but serious, syndrome involving blood clotting and low platelet levels. Many people are understandably concerned: What's causing these blood clots in the first place? How are they different to other types of blood clots? And why wasn’t this picked up during the vaccine’s clinical trials?

Here is what we know so far about the science behind blood clotting, our understanding of how it might be connected to the AstraZeneca vaccine, and how scientists and health authorities are investigating the risks.

Read the full article at the Australian Academy of Science.