A short paper, "Persistent False Positive COVID-19 Rapid Antigen Tests,” caught my eye in the Feb. 22 New England Journal of Medicine. This kind of test done at home with a kit from the store is ...

You may get a PCR test, which can show a positive result for up to three months after recovery. If you take a rapid antigen test, it may not detect COVID after nine days, but it is more accurate for ...

rare Thimphu sample cross-contamination locked contenton Buddhism that Tshokey locked contentsample Sonam cross-contamination ranges locked contentthat Tiger's Nest Tshokey sample, locked content ...

Germany's government defended the accuracy of its coronavirus testing procedures on Wednesday, after a Bavarian laboratory delivered a run of false positives that it blamed on pressure of work and a ...