Data from overseas suggests that after age, obesity is the biggest risk factor causing more problems than smoking with coronavirus patients. So why could that be? On today's show: * What's the NSW schools report all about? * Queensland is reducing some restrictions. Why now? * People are volunteering to be exposed to coronavirus to help test the vaccine. Is that a good idea? * What is the role of obesity in serious outcomes from COVID-19? * Why do I need a flu shot to visit my father in an aged care home? * Are vegans and vegetarians the least affected by COVID-19? And don't forget to check out Dr Norman Swan's "The Health Report" podcast for more on the issues around volunteering for the coronavirus vaccine.