ELI5, if Stomach acid kills bactaria we ingest, how do we still get food poisoning like samonella?
In: 5
In the case of different types of salmonellas which are sensitive to gastric acid, you just need a a ton of them… a large enough load for some of them to survive the journey, and if enough make it boom infection (maybe).
They then use whatever characteristics they have to their advantage. Perhaps one bacteria is motile and can get to places easily. Perhaps the have a special viral antigen that ends up blocking or interfering with regular antibodies.
There are a lot of cases in biology where all you really need for any one thing to do something is to put a lot of it somewhere haha.
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