In this week's Coronavirus update we talk about promising treatments (including some that are already approved), a new variant of SARS-CoV2 that is 3 to 9 times more infectious than the original and that has almost completely replaced the old variant, a monoclonal antibody from the original SARS that looks like it works against SARS-CoV2, and whether or not sunlight is killing the virus before it can infect you in some circumstances.