Dr. Anthony Fauci said in June 2019 that his nightmare public-health scenario was a "respiratory illness that easily spreads and has a high degree of morbidity and some degree of mortality." Less than six months later, the novel coronavirus emerged on epidemiologists' radar in Wuhan, China. Now Fauci says he's "so sorry" that he was "so prescient." Better public-health surveillance systems in the US would go a long way toward curbing the next infectious-disease outbreak.