The purpose of this study is to learn more about both HIV-1 infection and advancing age, and their association with increased risk of serious infection and impaired response to the Prevnar 13 vaccine.
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Determine pneumococcal specific IgG levels in BAL (BronchoAlveolar Lavage) fluid and NPF (Nasopharyngeal Fluid)
Timeframe: A change from baseline, measured at pre-vaccination, and 1 month post vaccine
Determine pneumococcal specific IgG levels in serum
Timeframe: A change from baseline, measured at pre-vaccination, and 1 month post vaccine