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factors req for infection (mode of transmission (a) droplet ( respiratory…
factors req for infection
reservoir
animal
case
carrier
soil
human R
carrier
according to the duration
chronic
temporary
according tothe portal of exit
fecal ( intestinal carrier )
blood carrier
respiratory carrier
urinary or sexual carrier
according to type
incubatory
convalescent carrier
healthy
Case
mode of transmission
b) food and water ( intestinal infection )
c) arthropods ( biological transmission )
a) droplet ( respiratory )
air borne
droplet nuclei
dust
fomite borne
direct droplet
milk borne
d) contact
e) parentral or blood transfusion
f) animal bite
g) transplacental