Transmission of Disease
Modes of transmission of disease
Five main modes:
1) Direct person to person contact with the skin of an infected person or carrier (eg staphylococcal infections, chicken pox, poliomyelitis)
2) Direct mucous to mucous contact – kissing or sexual intercourse (eg gonorrhoea, AIDS)
3) Indirect – droplet or dust in air (eg influenza, measles, pneumonia)
4) Indirect contamination of food and water – by faeces, dead or living animals (eg cholera, typhoid hepatitis)
5) Blood contamination – either direct (IV infusions, kidney dialysis, nonsterile syringes) or indirect (arthropods or other animal vector) (eg malaria, AIDS, plague)
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