DR. ROACH WRITES: If you havent gotten your influenza vaccine yet, its time to think about it. This years vaccine is similar to last years, but two of the components have been updated to match the strains that are circulating worldwide and expected to be epidemic in North America. In fact, this years decision on which specific types to include was delayed a month to get further information about a newer influenza virus. Nine different vaccines from five different manufacturers have been released by the Food and Drug Administration. All flu shots use only virus components…
