Infectious diseases Chapter 3
What causes infectious diseases Caused by a pathogen An organism that causes a disease in another living thing Virus, Bacteria, Protozoa, Fungi
How pathogens spread Through food or water Harmful bacteria can contaminate food to cause food poisoning Spread through sexual contact Droplets in the air Sent through a cough or sneeze Deposited on objects or surfaces Picking up athletes foot from the floor of a gym Spread by vectors When another organism carries the pathogen from one to another
Preventing the spread Eat healthy and get enough sleep Vaccines Wash your hands Avoid touching your eyes, mouth, or nose Avoid close contact with people who are sick Cover your coughs and sneezes Disinfect frequently touched surfaces Stay home when you are sick