Even if effectiveness wanes, vaccines are still our best defense against new COVID strains

Fuelled to infect by new variants, COVID continues making waves in Australia.

a young woman sitting on a couch wrapped in a blanket and blowing her nose against covid ba.5 or seasonal flu
Flu and COVID share a lot of symptoms, like a sore throat, runny nose and fever – so how can you know what you have? Credit: Evrim Ertik / E+ / Getty Images.