Topics
A to Z
Data &
 Statistics
Forms &
Publications
News &
Advisories
Licensing &
Certification
Rules &
Regulations
Public Health
Directory
Print this Article   Bookmark and Share
Routes of Transmission
Communicable and infectious diseases can enter the body in many different ways.

Airborne transmission

Airborne transmission occurs when infectious agents are carried by dust suspended in the air. With airborne transmission, direct contact is not needed to spread disease (as compared with respiratory droplet transmission).


Animal transmission

Many microbes that threaten public health are carried by animals and transmitted to humans. Visit the links below to read about these organisms, which animals carry them, and the illnesses they cause.


Food and water transmission

Food and water are necessary for life, but also prone to contamination with harmful microbes. The link below highlight prevention tips and efforts aimed at minimizing risks from foodborne pathogens. 


Health care transmission

Doctors and hospitals are where the sick people go, but unfortunately, some infections may be transmitted in these settings. From the links below you can find data on healthcare-acquired infections in Oregon and rules related to the handling of potentially infectious medical waste:


Respiratory (droplet) transmission

Some disease-causing bacteria and viruses are carried in the mouth, nose, throat and respiratory tree. They can spread by coming into direct contact with droplets when an infected person coughs or sneezes, or through saliva or mucus on unwashed hands. Browse the links below to learn about diseases spread in this way.