Up to 90 per cent of people diagnosed with coronavirus may not be carrying enough of it to infect anyone else, study finds as experts say tests are too sensitive
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