Infection is term which is used when a microorganism invades a human body or any animals and causes a change in the normal condition of the animals and human. The microorganism can be bacteria, virus, and even parasite which are not normally present within the body. An infection may even occur without a symptom and can be subclinical but most infections show symptoms and apparently clinical in nature. The infection can remain localized or it may even spread throughout the body through blood and other body fluids. There are few microorganisms which are naturally present in our body these microorganisms are not considered as an infection. There are different treatments for different infections based on the level of infection and severity of the infection in the body. Majorly antibiotics and antiviral drugs are used to treat the infection.  

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