beginning of the coronavirus pandemic, many places have struggled with overwhelmed laboratories and a shortage of testing kits. In March, Germany was carrying out half the tests it needed. In Britain testing was limited until May to health-care workers, hospital patients and key workers. In America shortages of various components required for testing have been a cause of constant frustration.
A technique developed in the 1940s by Robert Dorfman, an American economist, may help resolve the problem. Dorfman proposed it as a way of testing soldiers en masse for syphilis. It is, in fact, quite obvious: pool together samples taken from several individuals and test the pool. If it is clear, none of its members is infected, and only one test has been used. Only if the pool comes up positive is individual testing required.
Testing pooled samples has its difficulties. For now, samples must be labelled by hand, which is slow. There are also concerns about loss of sensitivity that may result from dilution if too many samples are mixed. A group of researchers from Technion, Israel’s oldest university, and Rambam Health Care Campus, in Haifa, have said that up to 64 samples could be mixed, but they acknowledge that a pool this large would be difficult to manage and could have a higher risk of a false-negative result.
3 % of testings are wrong !
'America carries out roughly 800,000 tests a day. A study published by Harvard University, however, reckons that the country would need to carry out 5m a day in order to reopen safely.'
Testing without control and isolation is not so much useful.
No shit. Want test results in Missouri? 10 day wait. COVID19
Pool sampling probably works better in countries like China, where they have done 1,065 tests per case than in countries like the United States where 12 tests per case have been done. A large number of negatives when there are a large number of tests per case makes a difference.
Love this kids face
Just call Ut!!!
Not just testing! We would also have to commit to cooperating with contact tracing and quarantine, in addition to masking and distancing. In other words, we would have to *pass* the national IQ test, and there aren't any signs yet that we're willing or able to.
Bullshit news from a liberal institution who's main objective is to stop Trump.
8% of all US tests are positive compared to 3.5% for the EU and 1.8% for the UK.....suggests the virus has taken a deep hold in American society.
Why do they keep moving goalposts?
Reopen anyway with masks and distancing.
If Britain can get on top of it with 200k tests a day, then the US wouldn’t require 5m You have 5 1/2 times the UKs pop. You don’t need 25x it’s testing. Another 200k would be sufficient.
We need to have easier and fasters tests, pcr are painful and slow
Lol 3 months ago it 750 thousand a week, then 3 million a day , if we got to 5 million they would then say 10 million. It’s all a joke.
Baloney
Fake test
What’s the point?
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