<P> The mechanism of transmission of this disease starts with the injection of the parasite into the victim's blood when malaria infected female anopheles mosquitoes bite into a human being . The parasite uses human liver cells as hosts for maturation where it will continue to replicate and grow, moving into other areas of the body via the bloodstream . The spread of this infection cycle then continues when other mosquitoes bite the same victim . The result will cause that mosquito to ingest the parasite and allow for it to transmit the Malaria disease into another person through the same mode of bite injection . </P> <P> Other viral transmission for Flaviviridae diseases like West Nile virus, Yellow Fever Virus and Hepatitis B and C, via vectors like mosquitoes consists of a single stranded, positive - sense RNA virus that is enveloped membranous in a protein coat . Once inside the host's body, the virus will attach itself to a cell's surface through receptor - mediated endocytosis . The viral RNA material will undergo several changes and processes inside the host's cell so that it can release more viral RNA that can then be replicated and assembled to infect neighboring host cells . </P> <P> Currently, there are no specific vaccine therapies for West Nile virus approved for humans; however, vaccines are available and some show promising for animals, as a means to intervene with the mechanism of spreading such pathogens . </P> <P> Symptoms of illness are specific to the type of viral infection and vary on severity, based on the individuals infected . </P>

What diseases do mosquitoes carry in the us