what is antibiotics ?
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Antibiotics are medicines used to treat a wide variety of infections or diseases caused by bacteria, such as respiratory tract infections (e.g, pneumonia and whooping cough), urinary tract infections, skin infections and infected wounds. Antibiotics have saved millions of lives since they were first introduced in 1940s and 1950s. However, because they have been overused, many antibiotics are no longer effective against the bacteria they once killed.
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