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There is an issue with the rapidity with which COVID-19 mutates. Because of that it has been shown that COVID-19 IgG positive people can still contract a COVID strain just as virulent as the strain causing death in some.
It is important to realize that corona viruses are NOT like flu viruses. They are more like cold viruses which mutate rapidly and extensively enough to evade the immune response to one who already had the (similar) infection. Not enough is known about that at this time.
The IgG test (assuming it is extremely specific for COVID-19) may be useful for folks like me. I think I got it in early February. It was really no big deal at all, but I coughed all over my neighbors (lol).
Common cold. A coronavirus. Edit: someone beat me.
Chicken pox -->(herpes*)->shingles.
All related strains. Resurfacing at later times in a person's life.
*Herpes transmittal though thru certain means can still be in this viral family strain.
On topic- the company has had five/six month of data to research and sample. I wouldn't dismiss it. I'd be gently skeptical that it was accurate entirely.
I can! The four strains of human coronavirus that cause colds don't produce lifelong immunity; the immunity they initially induce fades away after a year or so. So you can catch them again and again and again... They are the gift that keeps on giving.
"However, on the basis of findings for other human coronavirus (OC43 and 229E) infections, it is known that immune protection is not long-lasting [6–8]."
(I'm sure a good PubMed search could pull up more references, but I'm feeling lazy tonight.)
But if COVID-19 produces immunity that lasts for at least a year, then a vaccine is doable. Might need a yearly booster, but that's hardly a problem; we could even combine it with that year's flu vaccine.
In answer to the question about viruses causing repeat infections, the Herpes species came to mind. As in Herpes simplex (types 1 and 2), which cause fever blisters and genital herpes. And Herpes zoster, which causes measles and shingles. And as the sufferers of recurring fever blisters, genital herpes lesions, and shingles can attest, these are the gifts that keep on giving.
But these are different critters than the coronavirus species, which are RNA viruses. The Herpes species are DNA viruses, which don't mutate nearly as rapidly than the RNA viruses. The Herpes species also really never leave their hosts once they've invaded their hosts for the initial infection, they take up residence in the sensory nerve cells. When they're reactivated, they cause outbreaks of the sores/shingles.
Fortunately there are vaccines available to help prevent shingles outbreaks. As I understand it, it's very difficult to produce vaccines against RNA viruses, due to their high mutation rate. That's one of the reasons they have not yet come out with a successful vaccine for the HIV retrovirus, though efforts to do so continue. And it's also why they've never come up with a successful coronavirus (ie, common cold) vaccine. I hope they will be more successful with this covid19 thing.
I just got an antibody test last week. My blood was drawn at a walk in clinic like you might use if you were injured on the job. The analysis was done through Lab corp. It turned out to be negative for the two tests they ran.
SARS-CoV-2 Antibody, IgM
SARS-CoV-2 Antibody, IgG
I just wanted to know because I got very sick in February with flu like symptoms unlike any I have experienced before. Fever and a very bad cough, but my sinuses stayed clear. I had also been vaccinated four months prior, so I was fairly sure that I had it.
I just wanted to know because I got very sick in February with flu like symptoms unlike any I have experienced before. Fever and a very bad cough, but my sinuses stayed clear.
As you are discovering, there are a LOT of different viruses that can cause a "flu-like" illness. In most of the country, the majority of the people who think they've had COVID-19 are wrong.
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