While it’s true that in South Dakota most West Nile Virus cases occur during August, new human infections are detected well into September in most years.
Zika virus, a tropical mosquito-borne disease, has recently emerged in many South American and Central American countries after having first been characterized in Africa and Asia.
During wet springs, tick populations tend to thrive in South Dakota. These parasitic arthropods require blood to fulfill their nutritional needs and commonly use humans as a host. Some ticks can also carry bacterial diseases that are a threat to human health.
Mosquito trapping efforts across the state in the last seven years showed that there are over 20 species of mosquitoes occurring in South Dakota, yet only two species dominate the surveillance data: Aedes vexans and Culex tarsalis.
With the very wet 2019 spring and recent rains, it inevitable that mosquito populations will be high this year. Although there are over 20 species of mosquitoes that call South Dakota home, there are really only two species that account for the majority of observed individuals.
August 12, 2019
SDSU Extension staff will be hosting several forums during Dakotafest 2019 held August 20-22 on the Schlaffman Farm near Mitchell, S.D., (2300 E Spruce Street) inside booth #600.