Biological transmission differs from mechanical transmission in that biological transmission involves reproduction of a pathogen in an arthropod vector prior to transmission. works only with noncommunicable diseases. requires direct contact. occurs when a pathogen is carried on the feet of an insect. involves fomites
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Biological transmission involves reproduction of pathogens in an arthropod vector prior to transmission. In terms of epidemiology, we can term a vector as an organism that is from infected to the uninfected. An infected organism which develops biological vector passes it to its host. For example a mosquito.
A mosquito being a mechanical vector carries an infected organism to its host either through the legs or through the other body parts
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