"There are no guarantees in science but what Operation Warp Speed does is maximize the probability of having at least one vaccine," Mango said during a phone call with reporters on Friday. "We’re very pleased where we are right now," Mango added. "We obviously have two of our six vaccine candidates that are in phase three clinical trials right now. ... We will have four vaccines in phase three clinical trials by the middle of next month." Mango added that manufacturing is already underway for three vaccines.

Source: CNN August 28, 2020 18:33 UTC