Data: The COVID Tracking Project; Chart: Andrew Witherspoon/Axios

The good news is that the number of daily coronavirus tests is going up again. The bad news is that it's still not nearly enough for the country to safely reopen.

Why it matters: If we don't know who has the virus, we can't stop it from spreading without resorting to stringent social distancing measures.

Driving the news: On Saturday, Anthony Fauci said that the U.S. is testing roughly 1.5 million to 2 million people a week, but "we probably should get up to twice that as we get into the next several weeks, and I think we will."

  • Deborah Birx, the White House coronavirus task force coordinator, said yesterday that "we have to realize that we have to have a breakthrough innovation in testing." She said we'll need tests that can detect antigen, or the part of a pathogen that triggers an immune response.

Between the lines: Testing has been hampered by shortages of supplies like swabs and test kits. There has also been a lack of coordination between labs with excess testing capacity and communities struggling to meet testing demand.

What we're watching: Some major cities and states — including New York and California — have begun to expand testing beyond the sickest patients, which is a good sign.

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First bipartisan multistate coronavirus testing drive to tackle shortages

A Whittier Street Health Center nurse performs a COVID-19 test in Roxbury, Massachusetts, on Monday. Photo: Matt Stone/MediaNews Group/Boston Herald

A bipartisan group of governors has joined the Rockefeller Foundation to deliver 3 million rapid coronavirus antigen tests to slow the spread of COVID-19 and help states safely reopen, the nonprofit announced Tuesday.

Why it matters: With no national plan, the initiative with Maryland Gov. Larry Hogan (R), Louisiana Gov. John Bel Edwards (D), Massachusetts Gov. Charlie Baker (R), Michigan Gov. Gretchen Whitmer (D), Ohio Gov. Mike DeWine (R), and Virginia Gov. Ralph Northam (D) would be the first coordinated testing strategy in the U.S.

Updated Aug 4, 2020 - Health

The states where face coverings are mandatory

Data: Compiled by Axios; Map: Danielle Alberti/Axios

Mississippi Gov. Tate Reeves issued a statewide mask mandate on Tuesday for people in public, as well as teachers and students going back to school.

The big picture: 34 states, in addition to the District of Columbia, have issued some form of a mask mandate as infections surge across the country.

Updated 9 hours ago - Health

World coronavirus updates

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

Prime Minister Jacinda Ardern announced all domestic pandemic restrictions will be lifted in New Zealand from midnight Monday except in Auckland, where they'll be eased late Wednesday.

The big picture: Ardern delayed the country's election until Oct. 17 as authorities work to stamp out a coronavirus cluster in Auckland, after the re-emergence of COVID-19. There have been single-digit or zero domestic cases in NZ's most populous city since the government reintroduced restrictions.