Illness

caused by virus Viruses are tiny infectious particles that can cause diseases in humans and other living organisms. Viral illnesses range from mild to life-threatening and can affect all parts of the body, including the respiratory, gastrointestinal, and nervous systems. Common symptoms may include fever, cough, diarrhea, vomiting, or body aches. Vaccines and antiviral medications can be used to prevent or treat viral infections. It is important to take measures to protect against viral illnesses, such as washing hands regularly and getting vaccinated when possible.