be efficacious

“If something was to be made available and shown to be efficacious and safe, I think there would be wide use of it,” Jonker says.

There was evidence that the treatment plan for McNaughton might work, including studies that had found dual biologic therapy to be efficacious and safe.

In a similar tactic to stretch scarce vaccine supplies, on Monday Russia revealed that it would test its two-dose Sputnik V vaccine to see whether just one dose—“Sputnik Light”—would be efficacious.

There have been hardly any vaccine studies, for instance, which raises another question: How will African countries deal with vaccines that have been shown to be efficacious on other continents?

“That reaffirms our positive feelings that vaccines against this virus can be efficacious.”