Democratic presidential nominee Joe Biden meets with veterans and union leaders in the backyard of a supporter. Photo by Chip Somodevilla/Getty Images

Joe Biden and Kamala Harris both warned Americans this holiday weekend to be skeptical of anything Trump says about a potential coronavirus vaccine, saying they’ll take their cues from scientists and not the president.

Why it matters: The Democratic ticket is trying to strike the right balance — they want to warn that Trump may be making premature claims for political gain, but they don’t want t0 dissuade Americans from actually using a vaccine once one is safe and available.

  • At an AFL-CIO virtual town hall, Biden said he would take a vaccine only if Trump had been “completely transparent and other experts in the country could look at it.”

Driving the news: Trump is attacking Biden and Harris for expressing concern that the president might accelerate the introduction of a vaccine for political reason.

  • On Monday, Trump called on his opponents  to “immediately apologize for the reckless anti-vaccine rhetoric that they’re talking right now.”

Between the lines. Trump continues to hint that there could be a vaccine before the November election. At a press conference in New Jersey he teased that there could be a “very big surprise coming up.”

  • Both Biden and Harris want to project optimism about the prospects for a vaccine, without creating an echo chamber for Trump's enthusiasm.
  • “If I could get a vaccine tomorrow I’d do it,” Biden said earlier today . “If it cost me the election I’d do it. We need a vaccine and we need it now.”
  • On Sunday, Harris told CNN: “I would not trust Donald Trump and it would have to be a credible source of information that talks about the efficacy and the reliability of whatever he’s talking about.”  

Go deeper

Updated 20 mins ago - Politics & Policy

Coronavirus dashboard

Illustration: Sarah Grillo/Axios

  1. Global: Total confirmed cases as of 7 a.m. ET: 30,804,120 — Total deaths: 957,348— Total recoveries: 21,062,785Map.
  2. U.S.: Total confirmed cases as of 7 a.m. ET: 6,766,631 — Total deaths: 199,268 — Total recoveries: 2,577,446 — Total tests: 94,211,463Map.
  3. Education: What we overlooked in the switch to remote learning
  4. Politics: In reversal, CDC again recommends coronavirus testing for asymptomatic people.
  5. Health: The dwindling chances of eliminating COVID-19.
  6. World: Guatemalan president tests positive for COVID-19 — The countries painting their pandemic recoveries green.
Updated 20 mins ago - Politics & Policy

Coronavirus dashboard

Illustration: Sarah Grillo/Axios

  1. Global: Total confirmed cases as of 7 a.m. ET: 30,804,120 — Total deaths: 957,348— Total recoveries: 21,062,785Map.
  2. U.S.: Total confirmed cases as of 7 a.m. ET: 6,766,631 — Total deaths: 199,268 — Total recoveries: 2,577,446 — Total tests: 94,211,463Map.
  3. Education: What we overlooked in the switch to remote learning
  4. Politics: In reversal, CDC again recommends coronavirus testing for asymptomatic people.
  5. Health: The dwindling chances of eliminating COVID-19.
  6. World: Guatemalan president tests positive for COVID-19 — The countries painting their pandemic recoveries green.

What we overlooked in the switch to remote learning

Illustration: Eniola Odetunde/Axios

America’s rapid and urgent transition to online school has come with a host of unforeseen consequences that are only getting worse as it continues into the fall.

The big picture: The issues range from data privacy to plagiarism, and schools are ill-equipped to deal with them, experts say.