How effective is stomach acid in killing bacteria, viruses and other germs?

How effective is stomach acid in killing bacteria, viruses and other germs? Are there certain bacteria or viruses that stomach acid cannot kill? And if so, what effect do they have on our body?

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  • 1 decade ago
    Favorite Answer

    Although the acid is strong enough to kill most bacterai and inactivate viruses, the presence of food and liquids dilute the acid, coats the microbes and protects the cells and viruses against the acids and digestive enzymes. One bacteria associated with ulcer formation, secretes chemicals that neutralize the acids.

    The fact that a number of infectious diseases are transmitted through food and water indicates microbes have adapted well to the hostile conditions of the digestive tract. Salmonella, Shigella, Vibrio, Escherichia, polio virus, Norwalk viruses all can survive in the intestinal tract.

    Source(s): Biology instructor for 39 years
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  • Maria
    Lv 4
    4 years ago

    "Germs" are bacteria and viruses. Chlorine kills some bacteria, not all of them. It doesn't bother viruses.

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