The strain changes, but the vaccines are cultured from an educated guess. The way I understand it, there are thousands of worldwide strains of influenza, but a small number here. Sometimes the labs hit it right, and sometimes they don't.
I always get a shot for the same reasons I have good homeowner's insurance. I hope I never need it, but would feel silly if i didn't get the shot.
Me being in public safety, and my wife being an SICU nurse at Parkland for years, it made sense for us just because of the volume of sick people we came in contact with. You would be very surprised at the number of people who still don't wash their hands, or cover their mouth when they sneeze.
Last edited by FireIsHot; 01/11/13 08:40 PM.
