Oxford University scientist John Bell, who is leading one of the efforts to develop a coronavirus vaccine, said on NBC's "Meet the Press" Sunday that his research group will likely get evidence on whether the vaccine has efficacy by early June.

Why it matters: The world is pinning its hopes on a vaccine for COVID-19 to save lives, help us return to normal and emerge from an economic recession.

The big picture: Bell noted that the "efficacy of the vaccine in terms of generating strong antibody responses is probably going to be OK," but said that a big issue is ensuring safety.

  • "We're being very careful in the clinic to try to monitor exactly what's happening, but you know that doesn't mean there won't be safety signals because there may well be," he said. "And we'll be on the alert to see if we can see them."
  • Bell also added that while the coronavirus doesn't mutate at the pace of the flu, he suspects that this vaccine will likely have to be a seasonal one.

Go deeper: The race to make vaccines faster

Go deeper

Updated 13 hours ago - Health

World coronavirus updates

Data: The Center for Systems Science and Engineering at Johns Hopkins; Map: Axios Visuals

An uptick in coronavirus cases in Europe is stoking fears that some countries, including France and Germany, could see a second wave, The New York Times reports.

The big picture: Both Germany and France have reported their highest number of new daily COVID-19 cases in months this past week. Some coronavirus mitigation efforts, like social distancing, aren't being enforced as strongly as they previously were.

Fauci: Coronavirus task force to examine aerosolized spread

A sneeze. Photo: Maartje van Caspel/Getty Images

The White House coronavirus task force will examine more closely just how much SARS-CoV-2 might be transmitted via aerosols, and not just from droplets, NIAID director Anthony Fauci said Wednesday at an online forum sponsored by Harvard T.H. Chan School of Public Health.

Why it matters: The longer the coronavirus can remain infectious in the air, the more likely it can infect people, particularly indoors — leading to the possible need to alter air filtration and circulation within buildings.

Nurses rally nationwide to demand protection amid pandemic

Healthcare workers on their way to work walk past demonstrators taking part in a national day of action in Miami on Wednesday. Photo: Joe Raedle/Getty Images

Nurses took more than 200 active demonstrations inside and outside U.S. hospital facilities in at least 16 states and the District of Columbia on Wednesday to demand full personal protective equipment and federal government action.

Driving the news: National Nurses United (NNU) members are demanding that the Senate pass the HEROES Act, House Democrats' $3 trillion pandemic recovery package, which they said would protect health care workers by ensuring domestic production of PPE through the Defense Production Act.