As the Northern Hemisphere prepares for a flu season with COVID-19, there are lessons to be learned from the south. Countries like Australia and Argentina made it through the middle of winter with very few cases of the flu. That could be thanks to social distancing measures in place to fight the coronavirus. NPR's Nell Greenfieldboyce reported on flu in the southern hemisphere and the possibility that it could mix with the coronavirus. NPR's Tamara Keith and Geoff Brumfiel take a look at President Trump's new health advisor, Dr. Scott Atlas. He has no background in infectious diseases and his ideas are worrying scientists who do. Mary Louise Kelly spoke with Moncef Slaoui, chief adviser for the coronavirus vaccine development program, Operation Warp Speed, about the status of vaccines in the U.S. Find and support your local public radio station.Email us at considerthis@npr.org