Covid patients can remain infectious following recovery.

[NNadir]

19. The state of the virus is, if you read the paper, indeterminate.

They explicitly state that their test was PCR based, which is destructive testing.

They offer no information as to whether the virus particles were infectious or not. I would think, that under the circumstances, it would be far superior to be cautious, since with the orange idiot in power, we have seen what an incautious approach based on rote assumptions is.

It is neither "doubtful" or "confirmed" that the viruses are active, but let's put this way: My sister-in-law is recovering (hopefully) from Covid. I will advise my niece and nephew to consider that she may be contagious. If she is not, great. If she is, however, I would be appalled if the outcome were tragic because I stated that this result is "doubtful."

Again it is neither "doubtful" nor confirmed. The world community is racing to understand this virus, and the urgency of the program and the stress under which work is conducted is bound to produce some results that do not stand up to time. But a sane approach is to treat every bit of information as having potential validity until it is shown that it is not valid.