Infectious diseases are illnesses caused by microorganisms, like bacteria, viruses, fungi, or parasites, that spread from one person or animal to another. They can also be spread through contaminated food, water, or the environment.
Causes
Organisms : Microorganisms like bacteria,
viruses, fungi, or parasites can cause infectious diseases.
Vectors : Insects or other animals can transmit infectious diseases.
Contaminated food or water
: Consuming food or water that has been contaminated with infectious agents can cause infectious diseases.Symptoms
fever, fatigue, loss of appetite, weight loss, night sweats, chills, aches and pains, skin rashes, coughing, and runny nose.
Treatment
Mild infections can be treated with rest and home remedies.
Life-threatening infections may require hospitalization.
Vaccines can prevent many infectious diseases.
Hand-washing can help protect against most infectious diseases.