What are the main factors in the spread of air borne diseases?

The risk of infection increases with increased duration of exposure to an airborne pathogen. In other words people who are in proximity of an infected person over a long period of time are at greater risk than those who have very limited contact with the source. Healthcare workers are at particular risk.

A number of other factors can aslo affect the probability of contracting the infection.

• unsanitary households
• overcrowding
• susceptibility – (weakend immune system because of another illness or malnutrition)

Thank you :)