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In 2019 my infant son had a 3-month period where he was sick at varying levels for 100% of the time. We kept thinking it was some kind of resurgence, until an epidemiologist at the hospital explained to us that he just kept getting different viruses from daycare over and over.

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The year of sickness, what I call our daycare episode. During that time I heard the GRC podcast about vitamin D3, started taking it, and haven't been sick more than a day or so since.

I am supplementing vitamin D3 and I still get sick. It is not a silver bullet for immunity.

Probably your kid has by the time you started supplementing just gone through the typically circulating virus strains and thus the viral loads in your kid don't replicate to levels that almost guarantee you being infected when interacting with them (like cuddling, comforting when they cry, etc.).

It's approaching ten years, and yes we have seen just about every strain. It stopped the winter week I started taking it.

As I said I sometimes get sick every few years but one day is typically the maximum. Consider me convinced.

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