define anti biotic with two varieties plzz answer the question
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Antibiotics are a group of medicines that are used to treat infections caused by some germs (bacteria and certain parasites). They do not work against infections that are caused by viruses - for example, the common cold or flu.
Antibiotics are normally only prescribed for more serious bacterial infections, as many infections get better on their own. Correct use of antibiotics is absolutely essential to help reduce antibiotic resistance. Germs become resistant to antibiotics over time, which then makes them less effective.
The World Health Organization (WHO) says "the world urgently needs to change the way it prescribes and uses antibiotics" as antibiotic resistance is a major global threat.
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