Standard vaccine injections, done with a 1-in.-long needle, aren't as effective in obese patients. Instead, they need a longer needle to get the same level of immune response. Researchers aren't sure why, but it's possible that fat prevents shorter needles from delivering the vaccine directly into muscle, where it has better access to immune cells.(Via Ivan Oransky.)
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6:32 pm Mon
Feb 8, 2010
Standard vaccine injections don't work as well for the obese
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