I believe New York is not doing enough tests for Coronavirus disease. You don’t compare the number of tests to total populations. Instead you compare the yield of the tests, which is the percentage positive. If only 1% of the tests is positive, you are over testing and should limit tests only to people who are more likely to have the disease. So cut done number of tests. But if you are yielding 30-50% it means your pre-selection is too restrictive and you may be missing those who also have a high probability of being positive. In the extreme case when 100% of the tests are positive, then you can say that 100% of the population is infected, whether you want to test them or not. Of course it is more likely that your pre-selection is so restrictive that you only test people you are 100% sure have the disease. Even those who are 90% sure to have the disease are not allowed to have the tests. In short, New York is under tested and COVID-19 cases are therefore greatly under reported. I want to see the yield go down to 10%, like most other places.
英文原文如下,
I believe New York is not doing enough tests for Coronavirus disease. You don’t compare the number of tests to total populations. Instead you compare the yield of the tests, which is the percentage positive. If only 1% of the tests is positive, you are over testing and should limit tests only to people who are more likely to have the disease. So cut done number of tests. But if you are yielding 30-50% it means your pre-selection is too restrictive and you may be missing those who also have a high probability of being positive. In the extreme case when 100% of the tests are positive, then you can say that 100% of the population is infected, whether you want to test them or not. Of course it is more likely that your pre-selection is so restrictive that you only test people you are 100% sure have the disease. Even those who are 90% sure to have the disease are not allowed to have the tests. In short, New York is under tested and COVID-19 cases are therefore greatly under reported. I want to see the yield go down to 10%, like most other places.