Wednesday, May 13, 2020 at 9 p.m. and Sunday, May 17 at 2 p.m. on KPBS TV + Friday, May 15 at 8 a.m. and Noon on KPBS 2 + PBS Video App. The film reveals the biology of the tiny pathogen devastating lives from Wuhan, China to New York City and follows the unprecedented global collaboration among scientists racing to develop a vaccine.