Infectious diseases are caused by bacteria, viruses, fungi, or parasites and can spread through direct contact, contaminated food or water, insect bites, or airborne transmission. Common infections include malaria, dengue, respiratory illnesses, tuberculosis, and viral fevers. Symptoms vary but often include fever, fatigue, body aches, cough, and gastrointestinal issues. Proper diagnosis and timely treatment are crucial to prevent complications. Management includes medications such as antibiotics or antivirals, vaccinations, and preventive measures like hygiene and vector control. For expert diagnosis and treatment of infectious diseases, consult Dr. Aparna More today!