An approved coronavirus vaccine could end up being effective only 50-60% of the time, meaning public health measures will still be needed to keep the pandemic under control, Dr. Anthony Fauci, the top US infectious diseases expert, said on Friday. "We don't know yet what the efficacy might be. We don't know if it will be 50% or 60%. I'd like it to be 75% or more," Fauci said in a webinar hosted by Brown University. "But the chances of it being 98% effective is not great, which means you must never abandon the public health approach." The novel coronavirus...
