Common mosquitoes carrying the West Nile virus have been found in Allegheny County, the first of the season reported by health officials. But now, for the first time, the Asian tiger mosquito, an aggressive biting insect that is active in daylight hours, has been reported infesting an entire neighborhood in the county, according to the Allegheny County Health Department. (Today)

The candidates for governor are divided on calls for a three-year extension of a program, chiefly funded by the state's Blue Cross/Blue Shield insurers, that provides subsidized health insurance for roughly 45,000 low-income Pennsylvanians. (Today)

WASHINGTON -- As lawmakers and health experts wrestle over whether a controversial chemical, bisphenol-A, should be banned from food and beverage containers, a new analysis by an environmental group suggests that Americans are being exposed to BPA through another, surprising route: paper receipts. (Today)

Cardiopulmonary resuscitation that consists of only pressing on the chest works about as well and saves as many lives as conventional CPR incorporating both chest compressions and mouth-to-mouth breathing, according to new research. (Today)

Q. My 5-year-old has an eye that crosses in, and the eye doctor says he needs to wear a patch for a while. (Yesterday)