Harvard Medical School - If you've been exposed to the virus

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What are the chances that a coronavirus test will tell me I am not infected when I actually am?

The chances that a coronavirus test will give you a false negative (indicating that you are not infected when you actually are infected) depend upon the type of test you have and when in the course of your infection the test is performed. There are two main types of tests:

nasal/throat swab tests and saliva tests, both of which detect the virus itself
blood tests that detect antibodies that your immune system produces in response to the infection.
If you get the nasal/throat swab or saliva test, you will get a false negative test result:

100% of the time on the day you are exposed to the virus. (There are so few viral particles in your nose or saliva so soon after infection that the test cannot detect them.)
About 40% of the time if you are tested four days after exposure to the virus.
About 20% of the time if you develop symptoms and are tested three days after those symptoms started.

This possibility of a false negative test result is why anyone who has symptoms that could be due to COVID-19, or has been exposed to someone known to be infected, must isolate even if they test negative for coronavirus.

The blood antibody test does not become positive (or might never be positive in some people) until many days after exposure, and is therefore not the primary test used for diagnosis. It is very useful for research and public health decision making.

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So, is Barr self-isolating? Asking for a friend.

I wouldn't be caught dead in an enclosed space right now but he's flying all over; meeting, hand shaking, never acting like it matters. Hot spot here I come! Pence also is equally indifferent to his own safety. It's weird.

Since they are unlikely to simply comply and "reopen" their states, when the economy goes to pot, which it will in either scenario, he can claim that HE wanted them to go back to work. HE was working for them, etc. barf, etc.

Typical Trump set-up. If we do not do all we can to mitigate this, tens of thousands (they even say up to 2 million) people will die. If he doesn't think that will mess up the economy, he's dumber than he looks

I bought some and put them here and there. Don't seem to be terribly effective but yesterday I noticed a nice house spider, waiting patiently by one. Like a restaurant! This morn he is still there, so apparently it's worth his time.

by telling him in advance the questions he wants answered at the debate. He wants his followers to be reassured Biden will at least work on "some" of his policies. Why Biden won't just say that obviously the US would be better off with a Universal Health Care system, and that obviously that won't happen overnight but we will work towards it. If he'd say anything along those lines it would go a long way

I know he's still "old-school" and will probably never agree that health insurance as it exists needs to go but he needs to understand there is a fundamental problem with health insurance. Mine is $12,000/yr in premiums (for myself), and then a nearly $3000 deductible. Meaning, if I don't even see a doctor I still have to pay $12,000 but what am I getting for that? Nothing, nothing at all. It's catastrophic insurance at this point.

Last year I did have an event that put me in intensive care for a week, so I ended up with my deductible and max out-of-pocket being paid by May. The shock the first time I filled a prescription and was told "no cost" I was floored. Took me awhile to figure out why.