Old Man Winter is clearly intent on hanging around as long as possible. And we’re not talking scattered flurries. We’re talking the flu. Influenza, which had begun to wane last month, has made a springtime resurgence. In the latest report from the U.S. Centers for Disease Control and Prevention, all regions of New Jersey once again show the spread of flu is now rated as high, rebounding from its previous level of moderate. “Looking at New Jersey, what’s striking is it’s much more widespread there than we’re seeing in other states,” said Jason McDonald, a spokesman for the CDC’s National Center for Immunizations and Respiratory Diseases. This April flu is a different strain than its winter counterpart. Hitting now is Influenza B, not the H1N1 swine flu that struck earlier.