Anthony Fauci, the nation's top infectious diseases expert, on Thursday said that a vaccine for a variant strain of the coronavirus believed to have originated in South Africa will likely take "several months.""That likely will take several months," Fauci said, asked about the timeline for development of the vaccine by MSNBC's Andrea Mitchell."We're already, for example, working with the Moderna company. Pfizer's doing it on their own, I'm...