Other Laboratory Programs
SURVEILLANCE FOR OTHER MOSQUITO-BORNE DISEASES
Malaria is an infectious disease caused by a parasite and transmitted to people primarily by Anopheline mosquitoes. In Sacramento and Yolo counties, there are two species of mosquitoes that can transmit the malaria parasite: Anopheles freeborni (the Western Malaria Mosquito) and Anopheles punctipennis (the Woodland Malaria Mosquito). We receive malaria case reports from the Sacramento County and Yolo County Health and Human Services Departments. Our laboratory responds to the reports by trapping mosquitoes in the area surrounding the malaria case. The mosquitoes are returned to the laboratory for identification, and all female Anopheline mosquitoes are tested for malaria parasites.
Dengue is another disease carried by mosquitoes. It is caused by a virus and transmitted to people by two mosquito species which are not commonly found or established in our region. Our District receives reports of Dengue cases every year, usually from people who traveled abroad. We respond to those by setting traps and collecting mosquitoes from around their residences for testing.
Dirofilaria immitis is a filarial nematode that causes heartworm disease. It is vectored in this region primarily by the tree-hole mosquito, Aedes sierrensis. Field technicians inspect and treat all known sources of this species, but they may be difficult to find, inspect and treat. Our laboratory conducts surveillance for the adult tree-hole mosquitoes in its routine trapping. In addition, we have a monthly Heartworm Program, which consists of contacting veterinary clinics and hospitals in Sacramento and Yolo Counties about heartworm tests preformed and positive cases found each month. Positive cases are matched to their addresses and that information in conjunction with tree-hole mosquito locations help determine the areas of higher risk for heartworm transmission.
PESTICIDE RESISTANCE MANAGEMENT
TICKS AND LYME DISEASE
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