The transmission mechanism of pathogens by mosquitoes consists of three patterns. The first is eggs. Infected female mosquitoes can spread the pathogen through eggs. The pathogen emerges in the embryo or on the egg surface. Both male and female mosquitoes can become infected. We call this Vertical transmission. The second is a bite. An infected mosquito bites a susceptible vertebrate host after an intrinsic incubation period host becomes an infected host. When the susceptible mosquito feeds on the blood of the infected host that carries the pathogen after an extrinsic incubation period the mosquito becomes infected. We call this Horizontal Transmission. And the last is mate. Both of them can be infected(male and female mosquitoes) if one of them has the pathogen in itself while the mating process. We call this Venereal Transmission.
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