We're getting some moisture and some heat, two of the key ingredients that officials look for when it comes to watching for West Nile Virus.

Five Hills Health Region Medical Health Officer Dr Mark Vooght explains the cooler conditions this spring have kept mosquitoes numbers quite low so far.

"It just delayed the activities of the Culex tarsalis female mosquitoes that over wintered." said Vooght. "They're just waiting for sustained warmer weather and of course, now that it's raining, their numbers could ramp up."

Vooght expects the number of mosquitoes to increase quickly now that there's some moisture saying the risk period for West Nile is mid July through the end of August.