
Respuesta :
Some drug-resistant microorganisms were present at the outset of treatment, and their frequency grew due to natural selection.
What is a drug-resistant organism?
Bacteria that are resistant to more than one antibiotic are referred to as multidrug-resistant organisms (MDROs for short). Multidrug-resistant organisms are mostly found in hospitals and nursing homes. They frequently affect the elderly or the extremely sick, and they can cause serious infections.
How do microorganisms become drug-resistant?
Microbes may also share genes, particularly those that make the bacterium medication resistant. Bacteria reproduce in billions. Bacteria with drug-resistant DNA may pass these genes on to other bacteria. Non-resistant bacteria absorb the additional DNA and develop antibiotic resistance.
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