In the scramble to get the coronavirus vaccines through rigorous safety and dosage clinical trials, many types of people weren't included in the studies.

One massive group are people who are affected - or have been affected - by cancer.

People with cancer are more vulnerable to contracting COVID-19 and have a higher risk of suffering severe disease, so a vaccine is a vital part of their health care.

So on today's Coronacast, what do we know about how the vaccine works with people who have cancer?

Also on today's show:

* Norman and Tegan discuss a new study looking at how the Pfizer vaccine responds to the so-called Brazilian variant

* More on convergent evolution and swimming kangaroos