Current advice for COVID-19 health workers is based on the assumption that droplets bearing the virus travel no further than 2 metres and do not remain in the air. The body of published evidence suggests otherwise.
An ultra-precise microscope that surpasses the limitations of Nobel Prize-winning super-resolution microscopy will let scientists directly measure distances between individual molecules.
We don't yet know if people with asthma are more susceptible to serious outcomes if they get COVID-19. But there's plenty asthmatics can do to minimise the impact of any viral infection.
UNSW Sydney's Professor Mary-Louise McLaws, who is an adviser to the World Health Organisation, says the world will never be the same again following the COVID-19 pandemic.
Biosecurity expert Raina MacIntyre says healthcare workers are concerned about dwindling supplies of personal protective equipment, and need to be aware of existing evidence to make an informed choice.
