My apologies I did not realize this article was a year old Experts say US's coronavirus positivity rate is high because tests are 'too sensitive' | Daily Mail Online Up to 90 percent of people tested for COVID-19 in Massachusetts, New York and Nevada in July carried barely any traces of the virus, a new report says Experts say it could be because today's tests are 'too sensitive' In the US PCR testing is the most widely used diagnostic test for COVID-19 PCR tests analyze genetic matter from the virus in cycles and today's tests typically take 37 or 40 cycles Experts say this is too high because it deems a patient positive even if they have small traces of the virus that are old and no longer contagious They suggest lowering the number of cycles, which would hone in on people with a higher viral load and who are more contagious Today there are 5.9million cases of COVID-19 in the US and there have been more than 182,000 deaths