Although fewer mosquitoes were detected this past weekend in Brandon traps, a small number of them were the Culex tarsalis species that is responsible for transmission of West Nile disease.
It's the first time this year that Culex tarsalis mosquitoes have cropped up in local traps, but the city says that the numbers are still too low to warrant any fogging.
In general, unless they are ordered to fog by Manitoba Health, the city only considers fogging if a number of elements, called the Adulticiding Factor Analysis, add up to a level of 15 or more.
At this point, the city's AFA level is at 12, which is considered medium. That's a notch up from the 11 that was recorded last week.
Trap counts from June 30 showed an average of 79 mosquitoes, with trap conts from July 1 netting 73.
That's down from the 109 and 106 that were caught in traps the week before. The city counts mosquitoes every week on Sunday and Monday.
Of the mosquitoes counted in the most recent numbers, only about three per cent of them were Culex tarsalis.