What are infectious diseases?
Infectious diseases are diseases that are caused by pathogenic microorganisms, commonly referred to as “germs.” Although some infectious diseases are not contagious, others can be transmitted from animal to person or from person to person. Many germs are not harmful because our immune systems protect us against numerous infectious agents. However, some germs are constantly mutating and can breach the immune system’s defenses. Infectious diseases are the leading cause of death worldwide. In the United States, more than 160,000 deaths are caused each year by infectious diseases. Even though some previously–epidemic infectious diseases have been controlled, new diseases emerge and old diseases rebound, sometimes in drug–resistant forms. That is why it is important to find out how infectious diseases are transmitted and, more importantly, what you can do to minimize your risk of infection.
Infectious diseases are caused by microorganisms, like viruses, bacteria, parasites, and fungus. Some infections affect the entire body while others may only affect one organ or system of the body. Because these diseases are contagious, they can be spread from person to person. Ways in which you can become infected are by touching, eating, drinking, or breathing in one of these microorganisms that cause disease. Vaccines and good hygiene, like proper hand washing, can help prevent infections. Learn more about Infectious Disease here or share your story or experience with icyou.
