WNV is mostly transmitted to humans through the bite of infected mosquitoes with rare cases of person to person transmission reported. Person to person transmission mainly occurs through infected blood products or solid organ transplantation, thus routine screening of such products is necessary to avoid further transmission. About 70% of human WNV infections are subclinical or asymptomatic with most symptomatic persons experiencing acute systemic febrile illness associated with a headache, myalgia and gastrointestinal symptoms (CDC, 2013). The objective of larval mosquito control is to reduce the mosquito populations before they become adults and pose serious health hazards. This is an efficient IPM program aimed at managing mosquitos from their breeding sites and killing them at larval stages so as to reduce the adult populations before they reach their infectious stage. This method is effective in controlling young mosquitoes but it must be accompanied by measures of controlling adult mosquitoes as well in order to achieve meaningful progress. Caution should be betaken since larval control alone cannot be able to stop the WNV outbreaks once the virus has started causing infections and this is the reason it should be accompanied by adulticides control. Controlling Mosquito Spread Of West Nile Virus In The USA.
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