Scientists think face masks help limit virus spread by protecting everyone else from the infected wearer. As a result, face masks are now mandatory in many cities, states and countries to limit the spread of COVID-19.
Some new studies have found people who were never symptomatic, exposed to, or tested positive for COVID-19 that have immune cells that can recognise COVID-19.
Instead of protecting us from the virus that causes COVID-19, the body's natural defence mechanisms can overreact and inflict damage. Understanding why could make the infection far less dangerous.
A mission to reprogram innate immunity to combat inflammatory and infectious diseases has been supported by the National Health and Medical Research Council.
