What is Antibiotic Resistance?

Nov 12, 2015
Antibiotic resistance is defined as when an organism that was once susceptible to antibiotic is no longer killed or its growth suspended by that antibiotic. Therefore, when an antibiotic is no longer effective at killing or slowing the growth of a bacteria, that bacteria is termed resistant to that antibiotic. Resistance varies from species to species, with some like Staphylococcal aureus developing resistance quite quickly to new antibiotics, while penicillin remains the drug of choice to treat Strep throat and Syphilus despite 60 years of use. Top scientists are still trying to figure out exactly how and why resistance develops, but we know that sometimes it is an accidental mutation and sometimes it is by transfer  from one organism to another. What we do know, is that increased exposure to antibiotics increases risk of resistance developing.

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