I’m learning about the immune system

I have a dear friend who is my age (60+) who sn’t worried about getting sick from the coronavirus. She is a naturopath and a homeopath and is trained in a lot of other alternative health care modalities.

She has absolute faith that her immune system is so robust that she will not get sick.

I don’t quite have that much faith, even though I’m doing a lot to stay healthy, but it made me curious about immunity.

One question I have is this: how many people are positive for the virus but have no symptoms? Is this because their immune systems are so robust that the virus keeps trying to make headway, but it just can’t?

Or, possibly, could it be because they were exposed to very little of the virus, just enough to test positive, but not as much as people who get sick?

I believe the tests are binary: either you test positive or negative. (I wish everyone could be tested frequently.) The threshold for testing positive may be low if people are carrying it but symptomless.

I’m also assuming that people in close or frequent contact with those carrying or sick with the virus would have more virus in their body and be more likely to get sick. So, nursing homes. Prisons. Cruise ships. Mardi Gras. Spring breakers packing the beaches.

Packed churches at Easter?

I want to learn more about the immune system. We’re all interested now!

I’m going to investigate that and report what I find here in plain language.

Today is Day 3 of shelter in place in Austin, Texas, USA. As of last night, we have 137 known cases and no deaths.

Interestingly, the majority of cases are in people under 40. Only 19 cases are in people 60+.

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