Wuhan: Two WHO team members blocked from entering China over failed coronavirus antibody test

– by admin IgM antibodies are among the earliest potential signs of a coronavirus infection, but could also appear in someone who has been vaccinated or previously infected (but is no longer a carrier) of the virus. False positives are also possible with such tests. Since November 2020, travelers flying into China have to show negative results for an IgM antibody test, and a PCR test, before they will be allowed to enter. The scientists in question are being retested, and had previously been tested and found negative for coronavirus multiple times, the organization said, adding that those scientists who…