While it's still too early to know how many people have cancelled their second Astra dose, doctors are urging people to make sure they receive both doses of the same vaccine.

The risk of serious side effects from the second dose are reported to be significantly lower, and on the plus side - a second dose gives you even better protection against COVID-19.

Currently, there's no approval from medicine regulators to mix doses.

On today's Coronacast, if you've had your first Astra shot, why getting your second is important.

Also on today's show:

* Is there any news on research for a cure or at least treatments for those with COVID-19?

* What more to we know regarding menstrual problem after Pfizer vaccination?