Long-Term Antibody Persistence at 1, 3 and 5 Years After a Fourth Dose of GSK Biologicals' Hib-MenCY-TT Vaccine Compared to ActHIB

Anti-PRP Geometric Mean Concentrations (GMCs)

Concentration were measured as Geometric Mean Concentrations expressed as microgram per milliliter (µg/mL). Results up to 5 years after the fourth dose are presented.

Time frame: One year, three years, and five years after the fourth dose vaccination.

Number of Subjects With Anti-PRP Antibody Concentrations Greater Than or Equal to 1.0 Microgram Per Milliliter

Results up to 5 years after the fourth dose are presented.

Time frame: One year, three years, and five years after the fourth dose vaccination.

hSBA-MenC Geometric Mean Titers (GMTs)

Titers are given as Geometric Mean Titers as measured by human serum bactericidal assay (hSBA) and expressed as the reciprocal of the dilution resulting in 50% inhibition. Results up to 5 years after the fourth dose are presented.

Time frame: One year, three years, and five years after the fourth dose vaccination.

Number of Subjects With hSBA-MenC Titers Greater Than or Equal to 1:4

Results up to 5 years after the fourth dose are presented.

Time frame: One year, three years, and five years after the fourth dose vaccination.

hSBA-MenY Geometric Mean Titers (GMTs)

Titers are given as Geometric Mean Titers as measured by human serum bactericidal assay (hSBA) and expressed as the reciprocal of the dilution resulting in 50% inhibition. Results up to 5 years after the fourth dose are presented.

Time frame: One year, three years, and five years after the fourth dose vaccination.

Number of Subjects With hSBA-MenY Titers Greater Than or Equal to 1:4

Results up to 5 years after the fourth dose are presented.

Time frame: One year, three years, and five years after the fourth dose vaccination.