3 doctors weighed in:

Where do antibiotic resistant bacteria come from?

3 doctors weighed in
Dr. Michael Ein
Internal Medicine - Infectious Disease
2 doctors agree

In brief: Various

They evolve in hospitals, sub acute care facilities and skilled nursing facilities.
Environments where antibiotics are excessively prescribed and sensitive bacteria are killed off while resistant strains persist and thrive. They also occur in the food supply because of the excessive use of antibiotics in animal husbandry to increase animal growth rates and corporate profits.

In brief: Various

They evolve in hospitals, sub acute care facilities and skilled nursing facilities.
Environments where antibiotics are excessively prescribed and sensitive bacteria are killed off while resistant strains persist and thrive. They also occur in the food supply because of the excessive use of antibiotics in animal husbandry to increase animal growth rates and corporate profits.
Dr. Michael Ein
Dr. Michael Ein
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