[avryhof]

That's fine. Some bacteria is actually good for you. Even trace amounts of "bad" bacteria will help build your immune system so you don't need to kill all bacteria.

[nerdponx]

This is about hospital infections, not the hygiene hypothesis.

[tootie]

I also have yet to see any evidence that hygiene hypothesis is true or leads to better long-term health outcomes.

[Herodotus38]

There's actually pretty good evidence now that childhood sanitation is correlated with the incidence of Acute Lymphoblastic Leukemia (ALL). Edit: accidentally wrote inversely

Here is a pretty good overview:

https://www.medscape.com/viewarticle/897242

Note that this is a little different than the usual interpretation of the hygiene hypothesis.

[kristiandupont]

The book An Epidemic of Absence presents a pretty compelling case, I recommend it.

[gruez]

a 400 page (tl;dr), non-peer reviewed book (no endorsements from the scientific community) is probably not the best evidence to present.

[anonytrary]

That's true, but when it comes to hospitals, you want to try and minimize all bacteria. Your skin may be a very protective organ, however if you get those same bacteria in a wound, it could lead to dangerous infection.

[Fomite]

This. While you're hospitalized is not the time to be trying to build your immune system's character.