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太原痔疮和息肉的区别
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钱江晚报

发布时间: 2025-06-02 08:48:12北京青年报社官方账号
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  太原痔疮和息肉的区别   

The Food and Drug Administration on Wednesday authorized the first rapid coronavirus test that doesn’t need any special computer equipment to get results.The 15-minute test from Abbott Laboratories will sell for , giving it a competitive edge over similar tests that need to be popped into a small machine. The size of a credit card, the self-contained test is based on the same technology used to test for the flu, strep throat and other infections.It’s the latest cheaper, simpler test to hit the U.S. market, providing new options to expand testing as schools and businesses struggle to reopen and flu season approaches. The FDA also recently greenlighted a saliva test from Yale University that bypasses some of the supplies that have led to testing bottlenecks.Both tests have limitations and neither can be done at home. Several companies are developing rapid, at-home tests, but none have yet won approval. Abbott’s new test still requires a nasal swab by a health worker, like most older coronavirus tests. The Yale saliva test eliminates the need for a swab, but can only be run at high-grade laboratories.And in general, rapid tests like Abbott’s are less accurate than lab-developed tests. The FDA said in a statement announcing the decision that negative results with Abbott’s test may need to be confirmed with a lab test in some cases. The agency granted Abbott’s test an emergency use authorization late Wednesday for patients with suspected COVID-19.The two additions should help expand the number of available tests. The U.S. is now testing about 690,000 people per day, down from a peak of 850,000 daily tests late last month. Many public health experts believe the country will soon need to test vastly more people to find those who are infected, isolate them and contain the virus.The FDA noted that Abbott’s test could be used in a doctor’s office, emergency room or some schools. “Given the simple nature of this test, it is likely that these tests could be made broadly available,” the FDA said.Since the start of the pandemic, nasal swab tests that are sent to a lab have been the standard for COVID-19 screening. While considered highly accurate, the tests rely on expensive, specialized machines and chemicals. Shortages of those supplies have led to repeated delays in reporting results, especially during a spike in cases last month.Government and health experts view rapid tests that can be run outside the laboratory system as key to boosting capacity.“Those screening tests are what we need in schools, workplaces and nursing homes in order to catch asymptomatic spreaders,” said Dr. Jonathan Quick of the Rockefeller Foundation, in an interview earlier this month. The nonprofit group has called for the U.S. to conduct about 4 millions per day by October, mostly rapid, point-of-care tests.Abbott’s BinaxNOW is the fourth rapid test that detects COVID-19 antigens, proteins found on the surface of the coronavirus, rather than the virus itself. It’s considered a faster, though sometimes less precise, screening method. The other tests need to be inserted into a small machine.Inside the Abbott test is a specially coated strip that interacts with COVID-19 antigens. The patient’s nasal swab is inserted into the card and a few drops of a chemical solution are added. Markings appear on the card to indicate whether the sample is positive or negative — much like a pregnancy test.Two other makers of antigen tests — Quidel and Becton Dickinson have said they haven’t been able to meet demand for the tests. A third, LumiraDx, plans to begin shipping its recently approved antigen tests by the end of this month. Abbott expects to begin shipping tests in September, reaching 50 million tests a month in October.The influx of antigen tests will go a long way toward meeting the Trump administration’s projection that 90 million COVID-19 tests a month will be available by September if needed. But U.S. “testing czar” Adm. Brett Giroir has stressed that the U.S. can contain the outbreak with far fewer tests.“That’s the capacity ... we do not need that many tests to safely and sensibly reopen,” Giroir told reporters on a recent call. He pointed to several key indicators that have been falling, including new infections and hospitalizations, even as testing has slowed.Earlier this month, the FDA authorized Yale’s saliva-based test, which is expected to cut the time and cost compared with similar tests. It’s the fifth COVID-19 saliva tests OK’d by regulators. All require lab processing.Developed by Yale’s School of Public Health, SalivaDirect can use any sterile container to collect a sample, not the special tube needed with earlier tests, and requires less chemicals. Outside experts welcomed the new approach but noted its limitations.“It’s not a rapid test, it’s a laboratory-based test that will still be prone to the same massive delays as any other test,” said Dr. Michael Mina of Harvard University.___Follow Matthew Perrone on Twitter: @ AP_FDAwriter.___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. 5201

  太原痔疮和息肉的区别   

The Detroit Lions have issued a statement in response to reports coach Matt Patricia was indicted on sex assault in a case that was ultimately dismissed.Court records for Cameron County, Texas show Patricia and Gregory Dietrich were indicted in August 1996 on sex assault charges.The case was dismissed in January 1997.The Lions have released the following statements from Matt Patricia and from Lions' owner Martha Firestone Ford, Bob Quinn and Rod Wood.Matt Patricia: 482

  太原痔疮和息肉的区别   

The E.W. Scripps Company now has a reach of 21 percent of U.S. television households after purchasing 15 television stations.That brings the total number of stations for Scripps to 51. The purchase from Cordillera Communications was 1 million. It adds more NBC and CBS stations to Scripps' strong ABC roster.The Cordillera stations will significantly diversify the Scripps portfolio, growing it to 51 stations, including 18 ABC stations, 11 NBC stations, seven CBS stations and two Fox stations. Scripps will operate seven duopolies, efficiently enhancing the depth and durability of the portfolio.The stations Scripps is acquiring are: 652

  

The driver who plowed down pedestrians and cyclists on a New York bike path is a "soldier of the caliphate," the ISIS terror group said on its weekly newspaper, without providing evidence to back up its claim.The attack Tuesday killed eight people and left more than a dozen others injured."One of the Islamic State soldiers in America attacked on Tuesday a number of crusaders on a street in New York City," the al-Naba newspaper reported Thursday. 457

  

The Centers for Disease Control and Prevention issued new guidance that recent studies have indicated that cloth masks offer more protection against the coronavirus than previously thought.Previous guidance suggested that masks were best used for preventing the spread of the virus. The CDC now believes that masks are effective for both stopping the spread and reception of the virus. The CDC said on Tuesday that multi-layer cloth masks can both block up to 50 to 70% of fine droplets and particles and limit the forward spread of those that are not captured. Overall, cloth masks offer up to 80% blockage in human experiments. The CDC’s analysis found that cloth masks offer comparable protection as surgical masks.“Studies demonstrate that cloth mask materials can also reduce wearers’ exposure to infectious droplets through filtration, including filtration of fine droplets and particles less than 10 microns,” the CDC’s guidance said. “The relative filtration effectiveness of various masks has varied widely across studies, in large part due to variation in experimental design and particle sizes analyzed. Multiple layers of cloth with higher thread counts have demonstrated superior performance compared to single layers of cloth with lower thread counts, in some cases filtering nearly 50% of fine particles less than 1 micron.”The guidance says that mandatory mask wearing can help prevent the need to implement economic shutdowns.“Adopting universal masking policies can help avert future lockdowns, especially if combined with other non-pharmaceutical interventions such as social distancing, hand hygiene, and adequate ventilation,” the CDC said.In an interview with Andrea Mitchell of MSNBC, Dr. Anthony Fauci said that wearing masks is “two-way street.”"Recent data has now shown that as a matter of fact, there's also the added benefit to protect you from droplets and virus that's coming your way," Fauci said Tuesday on MSNBC."“You protect others," he added. "Their masks protect you. And your mask also protects you."In a separate interview on Tuesday, Fauci said that shut downs can be avoided.“We are not talking about shutting down,” Fauci told CNN’s Jake Tapper. “There is always that misunderstanding when we talk about public health measures. We are not talking about shutting down. We are talking about the four or five things I talk about all the time, wearing mask universally, keeping a distance, avoiding congregate settings indoors over outdoors and washing your hands.”Editor's note: A previous version of this story said "masks were best used for spreading the virus" when it should have said "masks were best used for preventing the spread of the virus." That has since been corrected. 2729

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