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Older meningitis vaccines that have been routinely given to adolescents in the U.S. for the past decade don't protect patients from the B strains. Those older vaccines, which include Menactra, protect against four other serogroups. Many states require university students to receive them.Or in the case of the Dhume family, their healthy son had been had previously been vaccinated for bacterial meningitis, and died as a result?
Until 2014, there were no meningitis B vaccines approved for sale in the U.S. But the U.S. Food and Drug Administration approved Pfizer's Trumenba andGlaxoSmithKline's Bexsero for use in adolescents and young adults. Clinical studiesshowed the shots triggered immune responses believed to protect against meningitis B in a majority of recipients, as measured by blood tests. But because the rate of meningitis B is low, studies haven't yet determined whether the shots reduced the rate of infections versus a placebo.
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Mark Schleiss, a pediatric infectious disease specialist at the University of Minnesota, says: "I can tell you as a parent, for me it would be a no-brainer to want to get my children immunized against MenB. Because you never know if your child is going to be that one that's at risk."

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