Rob Stein

New coronavirus hot spots are emerging around the country, and many public health experts say the U.S, is still falling short on having enough testing and contract tracing to contain the virus.

New cases are rising in at least 20 states, even as restrictions on daily life continue to ease. The U.S. total represents more than 25% of the confirmed cases worldwide.

Troubling signs are emerging that new coronavirus hot spots may have started to erupt around the United States as the country has begun to reopen.

The federal government says that as of Aug. 1, all laboratories must include detailed demographic data when reporting test results in order to help fight the pandemic nationally.

Protests over George Floyd's death continue sweeping across the U.S., creating new dangers. Public health experts fear the coronavirus could begin erupting in new outbreaks around the country.

CDC chief Robert Redfield says that earlier testing for the coronavirus would have been like "looking for a needle in a haystack." But other health experts dispute his assertion.

As more people get tested for antibodies to the coronavirus, fears rise that they'll let down their guard mistakenly believing antibodies guarantee protection.

The CDC combines results of a test that spots people who are actively infected with results from another one that looks for antibodies. Scientists say it could create a false picture of the pandemic.

As more and more people get tested for antibodies to the coronavirus, infectious disease specialists worry that those tested — and their employers — may not understand the limits of the results.

The Food And Drug Administration is raising concerns about the accuracy of the Abbott ID Now Coronavirus test, which returns results within 15 minutes. The FDA worries about false negative results.

New estimates say the U.S. needs to triple its testing. But how much testing does each state need? Here's how states compare to each other, and to targets experts say they should hit.

An antigen test could be quick, and much simpler and cheaper than the PCR tests now used to spot people infected with the novel coronavirus. But some scientists worry about an antigen test's accuracy.

Thursday night's coronavirus task force briefing included preliminary research on how the virus responds to sunlight and heat. NPR's science and White House correspondents contextualize those claims.

An NPR science correspondent answers listener questions about testing for COVID-19, immunity and how testing capacity affects plans to reopen the country.

An NPR science correspondent answers listener questions about testing for COVID-19, immunity and how testing capacity affects plans to reopen the country.

The Wall Street Journal immigration reporter Michelle Hackman and an NPR science correspondent talk about the latest executive order to suspend immigration and answer various listener questions.

CDC director Dr. Robert Redfield says the agency will double the current number of positions to aid local health departments in quashing new outbreaks. They will focus on testing and contact tracing.

Centers for Disease Control and Prevention Director Robert Redfield outlined the agency's "contact tracing" strategy in an interview with NPR, as states scramble to prepare for reopening.

New research suggests the Abbott ID NOW test, which produces results in less than 15 minutes, is the most likely among common tests to reassure people they are not infected when they really are.

President Trump admitted that it will be up to governors when to lift quarantine measures. NPR correspondents discuss what lies ahead for the states as they slowly reopen businesses.