Flu cases surge across Philadelphia, Pennsylvania, New Jersey and Delaware as officials urge vaccinations - 6abc Philadelphia

Flu cases surge across Philadelphia, Pennsylvania, New Jersey and Delaware as officials urge vaccinations  6abc PhiladelphiaFlu reaches highest levels in the US in 25 years  CNNFlu activity in US could continue to rise for weeks, top CDC epidemiologist says  ABC NewsFlu surges across U.S. as doctor visits reach highest level since 1997  CBS NewsFlu cases skyrocket in US. See cases, where people got sick.  USA Today