Communicable diseases may be transmitted from the
reservoir or source of infection to a susceptible individual in many different
ways, depending upon the infectious agent, portal of entry and the local
ecological conditions.
Direct transmission
o
Direct contact
o
Droplet in faction
o
Contact with soil
o
Inoculation into skin or mucosa
o
Tran placental (vertical)
Indirect transmission
o
Vehicle-borne
o
Vector-borne
o
Mechanical
o
Biological
o
Air-borne
o
Droplet nuclei
o
Dust
o
Fomite-borne
o
Unclean hands and fingers
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