University of Nottingham Researchers, using disease and vaccination data from the 2009 Swine Fly Epidemic, have found relations to suggest that flu vaccinations are of real value when administered to broad populations. The vaccine debate is of great import today, due to the number of people who are skeptical with regards to their efficacy, as well as the risk that the unvaccinated create both for themselves and for health systems more generally.
Researchers found that broadly administered flu vaccines, in the case of the 2009 swine flu epidemic, were 73% effective at preventing lab-confirmed flus, and 63% at preventing hospitalizations more generally. Interestingly, researchers found that vaccines were more effective in children than in adults. These results, beyond supporting the logic of vaccination, may also help determine which vaccinations to prioritize in low-resource contexts.