Gov. M. Jodi Rell says none of the 81 people required hospitalization, and all have recovered or are recovering. The new cases confirmed Wednesday involved residents of Bridgeport, Darien, Easton, Granby, Ridgefield, Waterbury and Wilton.
Health officials say the 81 people range in age from 3 to 56. The patients' average age is 17, since many have been elementary and secondary school students.
Sixty-one of the cases involve residents of Fairfield County municipalities. Eight are from Hartford County, eight from New Haven County, two from New London County and one each from Litchfield and Middlesex counties.