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2. How Does Antibiotic Resistance Happen?

There are several causes for antibiotic resistance. These bacteria have evolved to excrete the ESBL enzyme. Many factors may have contributed to this, including societal pressures for doctors to prescribe antibiotics inappropriately, such as prescribing an antibiotic for a viral infection (which need antivirals) to appease the patient or prescribing a broad-spectrum antibiotic when a more targeted one would do. Other factors include:

  • The use of strong antibiotics in hospitals.
  • The spread of bacterial infections in hospitals.
  • Using antibiotics for agricultural purposes.

Medical prescription Sezeryadigar / Getty Images

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