The most common chronic infectious disease is caused by viruses that affect young people. The disease spreads through contact with the blood and body fluids of an infected person, and symptoms include headache, fever, feeling tired, belly pain, vomiting, skin rash, and yellowish eyes. According to the analysis, infectious diseases are spread in the air and are caused by microorganisms. The signs and symptoms of diseases depend on the disease. Health care centers can control and prevent these infections through methods such as immunization, hygiene practices, and isolation.