Illustration: Sarah Grillo/Axios

The World Health Organization on Sunday reported the pandemic's largest single-day increase of confirmed coronavirus cases, with more than 183,000 cases reported in the last 24 hours, according to AP.

Why it matters: The staggering number of new cases underscores the degree to which the pandemic is accelerating worldwide, not slowing down.

By the numbers: Brazil, the epicenter of the virus in the Southern Hemisphere, reported 54,771 new cases, while the United States reported 36,617. India reported 15,400 cases, bringing the total global case count as of Sunday evening to over 8.7 million.

  • 461,000 people have died from the coronavirus, with more than two-thirds of new deaths coming from North and South America, per AP.

Between the lines: In the U.S., spikes in states like California, Texas, Arizona and Florida are a product of both community spread and increase in testing.

  • President Trump has brushed off the surge in cases, stating at a rally on Saturday: "When you do testing to that extent, you’re going to find more people, you’re going to find more cases."
  • However, the growth in testing does not fully account for the surge in new cases. Michael Osterholm, director of the Center for Infectious Disease Research and Policy at the University of Minnesota, warned on Sunday that he does not believe the epidemic will slow down in the summer or fall.
  • Former FDA commissioner Scott Gottlieb also warned that the outbreaks in some states could tip into "exponential growth" in the next week, and he urged Americans to wear masks in public.

Go deeper: Tracking the coronavirus pandemic, by the numbers

Editor's note: This post has been corrected to show that two-thirds of new deaths come from North and South America (not the United States).

Go deeper

15 hours ago - Health

15 states broke single-day coronavirus records this week

Data: Compiled from state health departments by Axios; Map: Danielle Alberti/Axios

At least 15 states broke their single-day novel coronavirus infection records this week, according to state health department data reviewed by Axios.

The big picture: The number of coronavirus cases increased in the vast majority of states over the last week, and decreased in only two states plus the District of Columbia, Axios' Andrew Withershoop and Caitlin Owens report.

Jun 28, 2020 - Health

Gottlieb: Aggressive action in virus hot spots won't have impact for weeks

Former FDA commissioner Scott Gottlieb told CBS News' "Face the Nation" on Sunday that surging coronavirus cases across the Sun Belt are a result of "community spread that's been underway for some time" and that even if states take aggressive action to curb the spread now — which they're not — cases will continue to grow for weeks.

Why it matters: Skyrocketing cases in Florida and Texas have caused state leadership to hit pause on parts of their reopening plans. But Gottlieb argued that the piecemeal actions these new hotspots are taking, like closing bars, are far weaker than stay-at-home orders and will only have a "marginal" impact that may not manifest for weeks.

Coronavirus testing czar: "We are not flattening the curve right now"

Adm. Brett Giroir, the Health and Human Services official overseeing the nation's coronavirus testing efforts, told Congress Thursday that the U.S. is "not flattening the curve right now," and that the nationwide surge in new cases is not simply a result of more testing.

Why it matters: President Trump said at a press conference just hours earlier that the U.S. is getting the coronavirus "under control." He and other top members of his administration have sought to downplay the growing surge in infections as largely a product of increased testing.