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Viruses

Viruses are tiny infectious agents that can only replicate inside the living cells of other organisms. They can cause a wide range of illnesses, from common colds and flu to more severe diseases like COVID-19, HIV, and hepatitis. Viral infections spread through various routes, including respiratory droplets, contaminated surfaces, and bodily fluids. Vaccines have been developed to prevent some viral infections, while antiviral medications can be used to treat certain viral diseases. Proper hygiene practices, such as handwashing and avoiding close contact with infected individuals, are essential for preventing the spread of viral infections.