Spoiler Alert! If you haven't yet seen the movie, *Blade Runner 2049*, you might want to skip this question.

Officer K (also known as Joe) ...

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>  discovers that Dr. Ana Stelline is the daughter of Rick Deckard and Rachael Tyrell. Ana has a genetic disability that makes her vulnerable to infections so she lives in an environmentally sealed room 24/7.
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She was not placed ...

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>  in the environmentally sealed room at birth. She was actually placed in an orphanage (actually a child labor camp) that was very dirty. She was probably exposed to many environmental toxins and dangerous microbes in that orphanage.
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**How could she survive even a few years on an environmentally devastated world?**

This seems like a plot hole. Am I missing something from her backstory?