Experimental anti-viral therapy for Covid-19 99.9% effective

In a world first - a team of Queensland researchers and US scientists have developed a Covid-19 anti-viral therapy that has killed off the viral load, in infected mice, by 99.9 percent. It's been described as a "seek and destroy mission" - using a 'next generation" viral approach. Professor Nigel McMillan from Griffith University in Queensland joins Perlina Lau on Worldwatch.