• CDC says influenza B strain does not match vaccine

    The U.S. flu season started out slowly, but activity has increased sharply, which is typically the case; the bad news is that most circulating influenza B viruses tested so far this season do not match this year’s vaccine, signaling that two of the three vaccine components are off-target

  • New vaccine against deadliest strain of avian flu tested by scientists

    University of Pittsburgh researchers test new H5N1 vaccine; unlike other avian flu vaccines, which are partially developed from live viruses, the new vaccine uses a virus-like particle which is recognized by the immune system as a real virus but lacks genetic information to reproduce, making it a potentially safer alternative for a human vaccine