OPINION Four cases in Melbourne but what if I've already been exposed?

But if a person has been infected with coronavirus and is in an early stage of incubating the virus – would a vaccine confer any protection to that person?

The short answer is we don’t know yet for sure. But many vaccines do work in that way and when vaccine supplies are limited, targeting contacts for vaccination could be worth trying. This approach is sometimes called post-exposure prophylaxis, or PEP. READ MORE