It's interesting that the tests that look for genetic material from the virus can be triggered by fragments of virus that are no longer viable. This is kind of a good news / bad news thing. The good news is that the tests are sensitive enough to pick up very small hints of the virus. The bad news is that it can't tell us directly whether the person is still contagious.
I know that a scanning electron microscope can see the virus and would enable a scientist to determine whether the virus was intact or deactivated, but as far as I know this is not practical for regular patient assessments. Please enlighten me if I'm missing something here.
Spot on old boy.
Now the results are results from a sample, but is there any live virus lingering somewhere like say the kidney?
In other words the sample is a sample of free flowing fragments.
Think of it like a colesterol check. Yeah levels in a sample may say this or that about what freely flows through the blood but are there any large collections of it in some areas not freely flowing?
Or like cancer.……sometimes a person is deemed cancer free but then ends up sick again. They are free of detectable cancer cells. Yet it seems at times the cancer returns.
When I first heard of a negative covid 19 test it was said it was when no detectable virus remained for 2 tests at 7 days apart. That meant 14 days after symptoms had completely ceased. In mild cases they said 4-6 weeks to be covid free. In other words 1-2 weeks for onset, 2 weeks ill and 2 more to be deemed covid free. In more severe cases up to 3 months before being completely covid free. It seems in order to get folks back to work at the factory or hospital they check for viable virus. In other words can those samples grow new virus? Is this leading to what is being thought of as re-infection?
That is why the numbers of sick were like 100:1 for sick versus recovered at first. We may never know the true rate of infection since it seems lots of folks carry it around without symptoms. Unless they check every single person it will always be an educated guess. Same with the fatality rate. Now that we are checking for dead covid instead of no covid is that going to lead to some folks having a reoccurance out in the work place?
Now that time has passed the true picture is way less fuzzy, but it will be quite a while before we know what this virus did or did not do. Perhaps a generation. Once the pandemic is done there's still all of that data to sort out. We think we are smarter but we are not. We just have more sophisticated equipment, but a sophisticated tool is only as capable as the person using it.
It's like a giant asteroid heading towards the planet this pandemic is. We cannot stop it with current technology. What we can do with careful consideration is minimize the carnage from the asteroid along with the carnage of minimizing the carnage of the asteroid. Do we trample over a slower moving victim while fleeing the impact zone like some fire in a movie theatre? In this case the worlds economy being the victim. Some say yes. Some say no.
The pandemic will run its course and the human race will survive. Mistakes will be made. It's all the misinformation that causes people to lurch in one direction or another. I know people who think it is a giant hoax. I know others cowering in their homes in fear who think any minute it will burst through the door and murder them. It is best to be somewhere in the middle, knowing it is real, preparing for it and doing what they can to reduce the liklihood of it reaching them. Try to be the one to reduce the spread and we will all be better off for it.