COVID-19: Nearly one year on what do we know?

Nearly a year since COVID-19 emerged, what have scientists learnt? Professor Andreas Suhrbier weighs in on face masks, and how successful a vaccine might be. Andreas is a virologist and the head of the Inflammation Biology Research Group at QIMR Berghofer Medical Research Institute. He also researches other viruses like Zika, Ebola and chikungunya.