Time will tell if these are false positives... Wuhan virus has friends in high places.
False positive or they were infected months ago and either didn’t get sick or recovered without incident. I am not a scientist but find it nearly impossible for someone to be contagious for periods of a month and more.
They may well be true positives but for most the CCPV is an annoyance, not a problem and the strain extant is apparently a weakening form. What people are spreading is immunization.
When there are a million people wanting to get in any that demur at this point will be instantly replaced.