Undetected COVID-19 Cases Counted by NIH

Current COVID-19 tests detect the presence of the SARS-CoV-2 viral RNA genome in patients’ samples through RT-PCR. They are designed to identify who has the virus in their system, at the time of testing. But, testing in the United States has been inadequate on multiple levels. There are not enough tests, leaving some patients waiting in long lines outside of the hospital and others sleeping overnight in their cars, waiting to be tested. Also, the tests’ levels of sensitivity (identifying those with the disease correctly) and specificity (identifying those without the disease) have been called into question.