The Chain of Infection

1. The Chain of Infection

3. PATHOGEN

4. RESERVOIR

5. • Common mode of exit:
– Break in the skin
– Nose
– Mouth
– Anus

6. • DIRECT TRANSMISSION
– through close physical contact or direct person-
to-person contact
– Examples: touching with contaminated hands,
shaking hands, kissing etc.
• INDIRECT TRANSMISSION
- though an intermediate item or carrier
- Examples: contaminated food/water, eating
utensils, carried by mosquitoes or other insects