Professor Stuart Tangye from the Covid Human Genetic Effort explains why some people may be immune from catching COVID-19 and other severe viral infections. Subscribe and 🔔: http://9Soci.al/KM6e50GjSK9 | Get more breaking news at 9News.com.au: http://9Soci.al/iyCO50GjSK6 â–º 9News Lunch Podcast…