“I’m afraid that the most likely scenario is that we will not have a vaccine before the end of next year,” Schwan said on a Wednesday conference call with reporters, adding that an 18-month timeline is “very ambitious.”
He said that an antibody test, rather than a vaccine, would be key to allowing people to return to normal life before 2021.
The blood tests, which Roche plans to launch in May, can determine whether someone has had COVID-19, the illness caused by the coronavirus, and is likely immune to the virus. That could allow the population to gradually return to work.
Some researchers are more optimistic that a vaccine will be produced this year.