Mosquito Trap Results for City of Estevan:
• Low numbers of Culex tarsalis mosquitoes are being detected in southern Saskatchewan.
• No infected West Nile virus positive mosquitoes have been found, to date, in 2018.
• The risk of transmission to humans is minimal to low but is expected to rise in July.
• Higher numbers of other mosquito species are being detected in areas that received rainfall over the past two weeks.
• All mosquitoes, including Culex tarsalis, are most active on warm evenings and between dusk and dawn.
• The first generation of Culex tarsalis emerged in low numbers in southern and parts of central Saskatchewan. Numbers and infection rates of the first generation are low resulting in a lower risk to humans.
• Low numbers of Culex tarsalis were caught last week. Cool nighttime temperatures limited biting and egg-laying activities to a few hours in the evening and early overnight period.
• Other mosquito species are being detected in higher numbers than normal in southern Saskatchewan. Thunderstorm activity in June, contrasting to dry conditions in May, flooded many low-lying areas resulting in increased mosquito habitat. Numbers will continue to increase in those areas that received significant rainfall over the week.
More information on West Nile virus risk levels and prevention can be found at: http://www.saskatchewan.ca/residents/health/diseases-and-conditions/west-nile-virus/west-nile-virus-risk-level-and-surveillance-results