This study is a continued evaluation of the immune response to StaphVAX , a Staphylococcus aureus type 5 and 8 capsular polysaccharide conjugate vaccine, in end-stage renal disease patients, by giving a 3rd and 4th dose to a subset of the participants in the previous efficacy trial. Participants continue to receive the vaccine or placebo in a blinded manner, and are also randomly assigned to 1 of 2 different intervals between the doses. The immunogenicity is measured by the antibodies in the blood, and typical vaccine safety information is also collected.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
QUADRUPLE
Enrollment
99
each IM dose contains 200 mc total conjugate
placebo to match StaphVAX
multiple sites: contact Central Study coordination
Birmingham, Alabama, United States
serotype-specific antibody concentrations
Time frame: 6 weeks after each dose
serotype-specific antibody concentrations
Time frame: at several other time points up to 12 months after dose
elicited vaccine reactogenicity
Time frame: daily for 7 days after each dose
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