1.   And since most mosquito sprays have little residual effect, he said, it is typically necessary to find the mosquitoes and make a frontal assault.

2.   After finding infected mosquitoes, New York City sprayed.

3.   City health officials said they were turning their attention to Manhattan after finding mosquitoes carrying the virus in five pools, or samples, from Central Park.

4.   In addition to Westerly, the mosquitoes have been found in Charlestown and in Little Compton and Tiverton on the Massachusetts border.

5.   Infected mosquitoes were also found last month in Suffolk County, N.Y., prompting officials to close three parks and begin spraying.

6.   So far, Arizona officials have not found infected mosquitoes, but there have been several hundred cases of the illness along the Mexico-Texas border.

7.   Still, they said they expected to find mosquitoes with the disease within days.

8.   Central Park and Alley Pond Park have been sprayed before, but additional mosquitoes were found afterward, Cohen said.

9.   Cohen said it was necessary to spray insecticide over an ever widening area of Manhattan because infected mosquitoes were found in Central Park on Monday.

10.   County health officials said infected mosquitoes were found in two pools of water in Bethpage State Park and north of the Sunrise Mall in Massapequa.