Direct Transmission
1. Direct contact eg: STD, leprosy, eye and skin infections
2. Droplet infection eg: Respiratory infections, whooping cough, TB, Meningitis
3. Contact with soil eg: Hook worm, tetanus
4. Inoculation into skin or mucosa eg: Hepatitis B, rabies
5. Trans placental (vertical) eg: TORCH, rubella
Indirect Transmission
1. Vehicle-borne eg: Diarrhoea, typhoid, cholera, food poisoning
2. Vector-borne
a. Mechanical
b. Biological
3. Air-borne eg: Pneumonia ,TB, Q fever, Psittacosis
a. Droplet nuclei eg: TB, Influenza, measles, chicken pox, Q fever
b. Dust eg: Pneumonia, TB,Q fever , Psittacosis
4. Fomite-borne
5. Unclean hands and fingers
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