(CNN)While some Americans wait several days or longer for Covid-19 test results, the American Medical Association and other groups want new federal guidelines to help fast-track those who need testing and results urgently.

That would be good news for those suffering symptoms or who were definitely exposed to someone with the coronavirus. But it could mean longer delays for those seeking test results before going back to work, returning to school, or visiting friends or family.Covid-19 test results from a major lab took days longer than publicly stated Covid-19 test results from a major lab took days longer than publicly stated Covid-19 test results from a major lab took days longer than publicly stated “Updated guidelines are critical to manage the ever-increasing demand for COVID19 testing,” since “no additional manufacturing capacity for many testing supplies is likely to be available through the remainder of this year,” the AMA and several other medical groups wrote in a letter dated Tuesday to Health and Human Services Secretary Alex Azar.”As the country continues to struggle to provide laboratories with a consistent supply of reagents, viral transport media, plastics (such as a pipette tips), and other items essential to providing both COVID-19 and non-COVID-19 testing, we recommend that the Administration consider updating testing prioritization guidelines to ensure that the limited testing resources available are directed at those with a medically-indicated need for tests and those identified by well-defined public health surveillance efforts.”Read MoreThe Trump administration’s testing czar has said results ideally should be delivered within 24 hours of a coronavirus test. The Department of Health and Human Services did not respond Wednesday to CNN’s request for comment on the letter. Who would get priority testing, and who wouldn’t?The medical groups suggested “those with COVID19 symptoms, those with known exposures to COVID-19, and those in need of pre-procedure testing” should have access to prompt testing and test results. But even though some health officials have encouraged people without symptoms to get tested to help reduce asymptomatic spread, the massive demand for tests has created delays for those who already have symptoms or those who were directly exposed to someone with Covid-19. Trump: "I said to my people, slow the testing down please."Trump: "I said to my people, slow the testing down please."Trump: "I said to my people, slow the testing down please."“As significant surges in new COVID-19 cases create significant demand for new tests, we are also seeing an increase in demand for testing of asymptomatic individuals with no medically indicated need for testing services,” the letter said. “These include tests for employees going back to work, students returning to colleges and universities, and individuals wishing to engage in non-essential travel.”And without improvement in available supplies, “we simply do not have the resources to meet the huge demand for testing by asymptomatic individuals without exposure to COVID-19,” the groups wrote.”We remain hopeful that the United States will soon be able to bolster manufacturing to meet the needs of everyone desiring a COVID-19 test. However, until manufacturing can meet our unprecedented demand for testing services, it is critical that we prioritize our testing resources where they are needed most.”The American Academy of Pediatrics on Thursday released separate — but virtually identical — recommendations to help health care providers determine when to test for the coronavirus. Children with symptoms, those who have been in close contact with someone with confirmed Covid-19, or those having elective surgery should be tested, the guidance states.How major delays make some tests ‘borderline useless’This coronavirus is notorious for how easily it’s spread by people who are asymptomatic or pre-symptomatic. So the longer an infected person without symptoms has to wait for test results, the longer that person might be infecting others unknowingly. Here's the difference between asymptomatic and pre-symptomatic spreadHere's the difference between asymptomatic and pre-symptomatic spreadHere's the difference between asymptomatic and pre-symptomatic spread“People can be contagious without symptoms. And in fact — a little bit strangely in this case — people tend to be the most contagious before they develop symptoms, if they’re going to develop symptoms,” CNN Chief Medical Correspondent Dr. Sanjay Gupta said.”They call that the pre-symptomatic period. So people tend to have more virus at that point seemingly in their nose, in their mouth. This is even before they get sick. And they can be shedding that virus into the environment.”The US Centers for Disease Control and Prevention estimates 40% of coronavirus transmissions happen before people feel sick. That’s one of the reasons why wearing masks is so important. In June, after crowds of young adults were seen reveling without face masks, the White House coronavirus task force coordinator urged all millennials to get tested. “Thanks to the millennials who have been heeding our guidance, they have been coming forward and getting testing,” Dr. Deborah Birx said. Trump's Covid-19 testing czar says the government is doing all it can on tests. That's not what the experts say.Trump's Covid-19 testing czar says the government is doing all it can on tests. That's not what the experts say.Trump's Covid-19 testing czar says the government is doing all it can on tests. That's not what the experts say.“Whereas before we told them to stay home, now we are telling them to be tested. And this is a great change for us because it allows us now to find the asymptomatic and the mild diseases that we couldn’t find before.”But since then, testing capabilities haven’t kept up with demand. In late July, the Trump administration’s testing czar said while testing capabilities have improved, “we are not going to stop our efforts until testing is exactly where we want it to be with rapid turnaround times.” “We are never going to be happy with testing until we get turnaround times within 24 hours,” said Adm. Brett Giroir, a physician. At the time, he said, about half of the tests performed had results within about 24 hours. But as of early August, some people were waiting more than 10 days to receive test results — meaning non-symptomatic carriers could be spreading Covid-19 to others. At that point, testing becomes “borderline useless,” said Dr. Ashish Jha, director of the Harvard Global Health Institute.If faster testing were universally available, he said in late July, “we could drive this epidemic down, and we could bury it and get very low number of cases.”

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https://www.cnn.com/2020/08/14/health/covid-testing-delays-priority-guidelines/index.html

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