Social media companies such as Twitter and Facebook still aren't doing enough to counter the spread of coronavirus-related misinformation and lies on their platforms, and will need to crack down on anti-vaxxers, in particular, should a COVID-19 vaccine become available, one of Australia's peak medical bodies has warned.

Allowing anti-vaccination misinformation to continue to swirl on social media would make it harder for communities to achieve "herd immunity", where sufficient people are immunised against a virus so it can no longer spread through the population, the Royal Australian College of General Practitioners said.