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How accurate are the coronavirus tests used in the U.S.?Months into the outbreak, no one really knows how well many of the screening tests work, and experts at top medical centers say it is time to do the studies to find out.When the new virus began spreading, the Food and Drug Administration used its emergency powers to OK scores of quickly devised tests, based mainly on a small number of lab studies showing they could successfully detect the virus.That’s very different from the large patient studies that can take weeks or months, which experts say are needed to provide a true sense of testing accuracy.The FDA’s speedy response came after it was initially criticized for delaying the launch of new tests during a crisis and after the Centers for Disease Control and Prevention stumbled in getting its own test out to states.But with the U.S. outbreak nearly certain to stretch on for months or even years, some experts want the FDA to demand better evidence of the tests’ accuracy so doctors know how many infections might be missed.There have been more than 2 million confirmed coronavirus cases in the U.S. and more than 115,000 deaths, according to data compiled by Johns Hopkins University. Cases in nearly half of U.S. states are rising.In recent weeks, preliminary findings have flagged potential problems with some COVID-19 tests, including one used daily at the White House. Faulty tests could leave many thousands of Americans with the incorrect assumption that they are virus-free, contributing to new flare-ups of the disease as communities reopen.“In the beginning, the FDA was under a lot of pressure to get these tests onto the marketplace,” said Dr. Steven Woloshin of Dartmouth College, who wrote about the issue in the New England Journal of Medicine last week. “But now that there are plenty of tests out there, it’s time for them to raise the bar.”The FDA said in a statement that it has already asked multiple test makers to do follow-up accuracy studies, although it didn’t say for how many of the more than 110 authorized screening tests. The agency also said it is tracking reports of problems. Accuracy has also been an issue with blood tests that look for signs of past infections.No screening test is 100% accurate. So details on accuracy are routinely provided for tests of all types, including seasonal flu, hepatitis, HIV and cancers. For example, rapid flu tests are known to miss 20% or more of all cases, a factor doctors weigh when treating patients who have symptoms but test negative.For now, most COVID-19 tests in the U.S. don’t give data on real-world performance, including how often the tests falsely clear patients of infection or falsely detect the virus. That information is lacking for all but a few of the roughly 80 commercial screening tests available, according to an Associated Press review.The government’s emergency authorization process “requires a lower level of evidence,” the agency said. Makers need only show that a test “may be effective” instead of the usual requirement to demonstrate “safety and effectiveness.” They would have to meet that higher threshold once the U.S. government declares the emergency over.Many of the commercial test makers submitted results from 60 samples, the minimum number required and mostly used lab-produced specimens of the virus. The FDA now recommends the use of nasal swabs or other real samples from people screened for coronavirus.Experts say larger patient studies patients are needed to assess a test’s true performance.Lab testing bears little resemblance to actual — sometimes imperfect — conditions at hospitals, clinics and testing sites noted Dr. Robert Kaplan of Stanford University.“You’re testing people in parking lots, the patients themselves are extremely anxious and often unable to follow instructions,” said Kaplan, a former associate director of the National Institutes of Health.Kaplan and others say those differences could explain why some tests are not performing as expected.Last month, the FDA warned doctors of a potential accuracy problem with Abbott Laboratories’ rapid ID Now test, which delivers results in roughly 15 minutes. The test has been lauded by President Donald Trump and used to screen the president, his staff and visitors to the White House.The FDA alert followed a preliminary report by New York University that found Abbott’s test missed between a third to one-half of infections caught by a rival test in patients screened for the virus.Abbott rejected the findings, saying the researchers did not follow the instructions for using its test. The company pointed to alternate patient studies, including its own, that have found the test successfully detects between 91% and 95% or more of virus cases when compared to other tests.But similar problems with ID NOW’s accuracy have been flagged in preliminary reports by researchers at Stanford University, Loyola University and the Cleveland Clinic.For now, the FDA is requiring Abbott to conduct follow-up studies in several different patient groups.The FDA’s emergency standards “are still high but there is a significant difference in the body of work that what would go into a submission under the normal process,” said Abbott vice president John Hackett. “Our normal process takes years to bring these out.”Requiring bigger studies of all coronavirus tests could provide valuable information, but it could also strain the FDA’s already stretched staff and resources, said Dr. Daniel Schultz, former director of the FDA’s medical device center.Dr. Colin West of the Mayo Clinic worries doctors and patients have put too much confidence in the current crop of tests, when an unknown number of patients with COVID-19 are likely receiving false negative results.Even a modest error rate can have grave consequences during an outbreak like COVID-19. West gives the example of a test that is 95% accurate at detecting the virus and is used on 1 million people. That would still result in 50,000 people being incorrectly told that they don’t have the virus.“The negative test does not mean that I’m off the hook,” West said. “We just need to maintain that level of vigilance until we have a better sense of how good these tests really can be.”___Follow Matthew Perrone on Twitter: @AP_FDAwriter.___Follow AP pandemic coverage at http://apnews.com/VirusOutbreak and https://apnews.com/UnderstandingtheOutbreak.___The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Department of Science Education. The AP is solely responsible for all content. 6604

If there are NFL games this fall, and if fans are allowed to attend in person, face coverings will be required. That’s the latest from the football league as they make changes because of the coronavirus pandemic.Some teams and stadiums have announced mask policies, and now it will be league-wide. NFL spokesman Brian McCarthy confirmed that all fans are to wear face coverings. 386

Hundreds of people gathered in protest in front of the White House on Election Night, and the demonstrations remained mostly peaceful.The Associated Press reports that "more than 1,000" people gathered on Black Lives Matter Plaza near the White House on Tuesday night. The outlet reports that the demonstrators at times blocked traffic and set off fireworks, but the protests remained mostly peaceful.WRC-TV in Washington reports that three people were arrested in connection with the demonstrations on Tuesday night. One person was charged with disorderly conduct, while two others were arrested following an "assault incident." It's unclear if or how that assault was linked to the protests.The Washington Post reports that the D.C. protests included one incident where a man tussled with police at Black Lives Matter Plaza.The rest of the U.S. was also largely free of civil unrest. The Associated Press reports that there were "scattered protests" in large cities, including in New York City and Seattle.Officials in some major U.S. cities feared protests would grow violent as returns trickled in. Storefronts in downtown areas of major cities like New York and Denver chose to board up windows out of an abundance of caution.The White House this week installed additional barriers in front of the property gates to prevent protesters from breaching the property. 1376

In a letter sent to 950 patients, University Hospitals Fertility Center blames human error for the loss of 4,000 eggs and embryos, twice the number initially reported.The letter says the Cleveland hospital is “heartbroken” to inform patients it is “unlikely” any of the eggs and embryos are viable.The letter says a remote alarm system on the storage tank containing the eggs and embryos, which was designed to alert a UH employee to temperature fluctuations, was turned off.It is unclear when the remote alarm was turned off, but an alert to an employee as the temperature inside the tank began to rise Saturday night was not sent or received, according to the letter.It is also unclear who turned off the alarm and how long the alarm was turned off.The lab was not staffed March 3, the night of the malfunction. There was also a history of malfunctions involving the storage tank.In the letter, UH said the storage tank in question “needed preventative maintenance.”For weeks prior to the malfunction on March 3, “we experienced difficulty with what is called the liquid nitrogen automatic fill” and were working with the manufacturer to correct the problem.“My clients’ lives and future aspirations were crushed and destroyed. Finding out how simple of a matter it would have been to prevent this tragedy shakes my faith in the medical profession to the core,” said Brian Taubman, an attorney representing patients affected by the malfunction, in a statement to Scripps station WEWS in Cleveland. “My clients trusted UH with their future family, never doubting that those lives were safeguarded and with the flip of a switch their lives and potential lives were changed forever,” said Taubman.The hospital also says it takes responsibility for the failures and apologized several times to the affected patients. The letter says, “Those failures should not have happened, we take responsibility for them – and we are so sorry that our failures caused such a devastating loss for you.”  2015

Hurricane Michael intensified as it aimed for the Florida Panhandle, where it could make landfall as the strongest storm in terms of wind speed in the country this year.Michael churned in the Gulf of Mexico on Tuesday as a Category 3 storm, poised to grow stronger and slam Florida's Panhandle.If the storm's core comes ashore as a Category 2 or higher, it would be the strongest storm in terms of wind speed to make landfall in the country this year.Michael was expected to intensify?overnight and be near Category 4 strength when it makes landfall Wednesday afternoon. It is threatening dangerous surges to low-lying areas ill-equipped to handle them.Florida Gov. Rick Scott called Michael a "monstrous storm" that could bring "total devastation," and urged people to get out of the way."Hurricane Michael is forecast to be the most destructive storm to hit the Florida Panhandle in decades," Scott said. "You cannot hide from storm surge, so get out if an evacuation is ordered."The storm had sustained maximum winds of 120 mph Tuesday night, with gusts to 150 mph. Category 3 storms have sustained winds of 111 mph to 129 mph, according to?the hurricane center's scale. A storm goes to Category 4 with sustained winds stronger than 130 mph.Winds of tropical storm force will be felt in the area starting early Wednesday, and mandatory or voluntary evacuation orders already have been issued in at least 22 counties on the Florida Gulf Coast head of the storm.About 3.7 million people were under hurricane warnings in the Panhandle and Big Bend regions, as well as parts of southeastern Alabama and southern Georgia. Tropical storm warnings cover 8.5 million people in four states.Michael was moving north at 12 mph, about 220 miles southwest of Panama City, Florida, the National Hurricane Center said Tuesday night. 1828

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