Dr Michela Sorensen on the secrets for never getting sick

It's that time of year again when winter sickness becomes a fixture in the headlines and for good reason. This year, Australians are being struck down with respiratory infections at an unseasonably high rate, with above-average cases of the flu and RSV. So, why is it so bad.. and how can we supercharge our immunity? For more, Dr Michela Sorensen joins. See omnystudio.com/listener for privacy information.