What to know about the biggest Covid wave since Omicron

<p>Many Australians could have been infected with Covid-19 for the second, third or even fourth time in the last couple of months.</p><p>That’s because a new variant of the virus has caused the biggest wave in over a year.</p><p>But while for many the symptoms are milder, and the risks of serious illness are dropping – what do we need to know about the new variants still emerging? And what evidence do we have about multiple reinfections?</p><p>Today, applied mathematician, expert in respiratory diseases, and contributor to The Saturday Paper, Dr James Wood, on t...