Background: The bivalent rLP2086 vaccine is approved in the United States to prevent meningococcal disease caused by Neisseria meningitidis serogroup B (MnB) in individuals aged 10-25 years. The immunogenicity and safety of bivalent rLP2086 were evaluated in microbiologists 24-62 years old who handle MnB.
Methods: Seven subjects vaccinated at 0, 2, and 6 months had functional antibodies measured before vaccination and 1 month after each dose by serum bactericidal assays using human complement (hSBAs) and 4 vaccine-heterologous MnB test strains.
Results: Six subjects qualified for analysis. All demonstrated hSBA titers ≥the lower limit of quantitation (LLOQ) against 3 of 4 strains; 3 subjects achieved titers ≥LLOQ for the fourth. Safety-related events following vaccination were generally mild to moderate in severity.
Conclusions: Three doses of bivalent rLP2086 were generally well tolerated in laboratory personnel and elicited protective functional immune responses reflective of broad coverage against MnB disease.
Keywords: Bivalent rLP2086; Laboratory worker; Meningococcal disease; Neisseria meningitidis; Serogroup B; Vaccine.
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