The risk of being infected by West Nile virus continues to go up.

On Thursday, officials announced that mosquitoes have now tested positive in 40 Connecticut communities.

Authorities have detected the virus in mosquitoes in Bethany, Bridgeport, Chester, Danbury, Darien, East Haven, Easton, Fairfield, Franklin, Greenwich, Haddam, Hamden, Hartford, Madison, Manchester, Meriden, Middlefield, Milford, Monroe, New Britain, New Canaan, New Haven, Newington, North Branford, Norwalk, Orange, Shelton, South Windsor, Stamford, Stratford, Wallingford, Waterbury, Waterford, West Hartford, West Haven, Westbrook, Weston, Westport, Wethersfield, and Woodbridge.

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“We continue to see exceptionally high numbers of mosquitoes carrying West Nile virus especially in coastal Fairfield and New Haven counties and in the greater Hartford area,” said Dr. Philip Armstrong, Medical Entomologist at the Connecticut Agricultural Experiment Station. “This is the critical time of summer when virus activity reaches its peak in the mosquito population.”

Two human cases of West Nile virus-associated illnesses have been detected in Connecticut this year.