We estimated that the influenza A(H1N1)pdm09-associated ILI rates per 100 py were 1.6 (95% CI 3.8-0.32) among children aged ,5 years, 15.0 (95% CI 26.6-5.7) among persons aged 5-44 years, 17.1 (95% CI 42.8-1.7) among persons aged 45-64, and 7.1 (95% CI 9.5-5.2) among persons aged $65 years ( 