Definition: Virus is a type of infectious agent, typically consisting of genetic material that can cause harm to cells in the body. The virus has the ability to replicate and spread across the body's cells, leading to various symptoms such as fever, cough, headache, sore throat, loss of appetite, fatigue, nausea, vomiting, and sometimes even death. Virus infections are often caused by pathogens or viruses that can infect and cause harm to cells in the body. Viruses can be transmitted through contact with
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