August 18, 2009 9:28 pm Will Swine Flu Return Stronger? The head of emergency services at St. Christopher’s Hospital for Children admits no one knows when the H1N1 virus will return or how strong it be when it does, but he says you can protect yourself and your family. US & World Videos 3:04 PurpleStride event in Philly raises money for those battling pancreatic cancer 3:27 ‘Take a Breather' and run to help battle against cystic fibrosis 1:49 How much time do you spend on your phone each week? Keith Jones, Erin Coleman talk screen time 2:52 Join the fight for ovarian cancer treatment and research at the Sandy Sprint 3:13 Movement, memory and Parkinson's awareness