How long does the H1N1 vaccine last? Will I need to get another one in the spring or summer?
Mike Heideman, communications and training specialist with the Kansas Department of Health and Environment, said the vaccine should provide some protection at least until the start of the regular flu season in fall 2010 if the person shows an adequate immune response from being vaccinated. “The effectiveness of many vaccines wane over time, and the H1N1 vaccine is no exception,” he said. “Every year, the vaccine against seasonal flu is changed so that it can address the most prevalent flu strains that are circulating at the time. We expect that H1N1 will still be circulating then and will be included as one of the viruses addressed by next season’s flu vaccine.”