Serum antibodies to HPV Type 6 were measured with a Competitive Luminex Immunoassay. Titers were reported in milli Merck Units (mMU)/milliliter (mL). GMTs from participants who received qHPV vaccine and REPEVAX™ together at Day 1 (concomitant) were compared to GMTs from participants who received qHPV vaccine at Day 1 followed by REPEVAX™ 1 month later (non-concomitant). An analysis of non-inferiority compared GMTs for each HPV type using an ANOVA model with a response of log individual titers and fixed effects for treatment group, manufacturing facility, study site, and the treatment-by-site interaction.

Serum antibodies to HPV Type 11 were measured with a Competitive Luminex Immunoassay. Titers were reported in milli Merck Units (mMU)/milliliter (mL). GMTs from participants who received qHPV vaccine and REPEVAX™ together at Day 1 (concomitant) were compared to GMTs from participants who received qHPV vaccine at Day 1 followed by REPEVAX™ 1 month later (non-concomitant). An analysis of non-inferiority compared GMTs for each HPV type using an ANOVA model with a response of log individual titers and fixed effects for treatment group, manufacturing facility, study site, and the treatment-by-site interaction.

Serum antibodies to HPV Type 16 were measured with a Competitive Luminex Immunoassay. Titers were reported in milli Merck Units (mMU)/milliliter (mL). GMTs from participants who received qHPV vaccine and REPEVAX™ together at Day 1 (concomitant) were compared to GMTs from participants who received qHPV vaccine at Day 1 followed by REPEVAX™ 1 month later (non-concomitant). An analysis of non-inferiority compared GMTs for each HPV type using an ANOVA model with a response of log individual titers and fixed effects for treatment group, manufacturing facility, study site, and the treatment-by-site interaction.

Serum antibodies to HPV Type 18 were measured with a Competitive Luminex Immunoassay. Titers were reported in milli Merck Units (mMU)/milliliter (mL). GMTs from participants who received qHPV vaccine and REPEVAX™ together at Day 1 (concomitant) were compared to GMTs from participants who received qHPV vaccine at Day 1 followed by REPEVAX™ 1 month later (non-concomitant). An analysis of non-inferiority compared GMTs for each HPV type using an ANOVA model with a response of log individual titers and fixed effects for treatment group, manufacturing facility, study site, and the treatment-by-site interaction.

Seroconversion to HPV Type 6 was defined as changing serostatus from seronegative to seropositive as measured by GMT. The cutoff value for HPV seropositivity was ≥20 mMU/mL. Seroconversion of participants who received qHPV vaccine and REPEVAX™ together at Day 1 (concomitant) was compared to seroconversion of participants who received qHPV vaccine at Day 1 followed by REPEVAX™ 1 month later (non-concomitant). An analysis of non-inferiority compared seroconversion for each HPV type using methods developed by Miettinen and Nurminen adjusting for manufacturing facility for qHPV vaccine.

Seroconversion to HPV Type 11 was defined as changing serostatus from seronegative to seropositive as measured by GMT. The cutoff value for HPV seropositivity was ≥16 mMU/mL. Seroconversion of participants who received qHPV vaccine and REPEVAX™ together at Day 1 (concomitant) was compared to seroconversion of participants who received qHPV vaccine at Day 1 followed by REPEVAX™ 1 month later (non-concomitant). An analysis of non-inferiority compared seroconversion for each HPV type using methods developed by Miettinen and Nurminen adjusting for manufacturing facility for qHPV vaccine.

Seroconversion to HPV Type 16 was defined as changing serostatus from seronegative to seropositive as measured by GMT. The cutoff value for HPV seropositivity was ≥20 mMU/mL. Seroconversion of participants who received qHPV vaccine and REPEVAX™ together at Day 1 (concomitant) was compared to seroconversion of participants who received qHPV vaccine at Day 1 followed by REPEVAX™ 1 month later (non-concomitant). An analysis of non-inferiority compared seroconversion for each HPV type using methods developed by Miettinen and Nurminen adjusting for manufacturing facility for qHPV vaccine.

Seroconversion to HPV Type 18 was defined as changing serostatus from seronegative to seropositive as measured by GMT. The cutoff value for HPV seropositivity was ≥24 mMU/mL. Seroconversion of participants who received qHPV vaccine and REPEVAX™ together at Day 1 (concomitant) was compared to seroconversion of participants who received qHPV vaccine at Day 1 followed by REPEVAX™ 1 month later (non-concomitant). An analysis of non-inferiority compared seroconversion for each HPV type using methods developed by Miettinen and Nurminen adjusting for manufacturing facility for qHPV vaccine.

Diphtheria antitoxin titers were measured using a neutralization assay in Vero cell culture that compares the antitoxin level in the serum of participants with the World Health Organization International Standard for Diphtheria Antitoxin. An acceptable level of response was defined as ≥0.1 International Units (IU)/milliliter (mL). Response levels of participants who received qHPV vaccine and REPEVAX™ together at Day 1 (concomitant) were compared to participants who received qHPV vaccine at Day 1 followed by REPEVAX™ 1 month later (non-concomitant). An analysis of non-inferiority compared response levels using methods developed by Miettinen and Nurminen adjusting for manufacturing facility for qHPV vaccine.

Tetanus antitoxin titers were measured using an indirect, non-competitive enzyme immunoassay (EIA) that compares the antitoxin level in the serum of participants with the World Health Organization International Standard for Tetanus Immunoglobulin. An acceptable level of response was defined as ≥0.1 International Units (IU)/milliliter (mL). Response levels of participants who received qHPV vaccine and REPEVAX™ together at Day 1 (concomitant) were compared to participants who received qHPV vaccine at Day 1 followed by REPEVAX™ 1 month later (non-concomitant). An analysis of non-inferiority compared response levels using methods developed by Miettinen and Nurminen adjusting for manufacturing facility for qHPV vaccine.

Poliovirus antibody was measured using a poliovirus neutralization assay that assesses the ability of serial dilutions of participant sera to neutralize known amounts of type-specific Sabin poliovirus strains (Types 1, 2, and 3). An acceptable level of response was defined as participants who achieve detectable serum neutralizing antibodies at a ≥1:8 dilution of sera. The response of participants who received qHPV vaccine and REPEVAX™ together at Day 1 (concomitant) was compared to participants who received qHPV vaccine at Day 1 followed by REPEVAX™ 1 month later (non-concomitant). An analysis of non-inferiority compared response levels using methods developed by Miettinen and Nurminen adjusting for manufacturing facility for qHPV vaccine.

Poliovirus antibody was measured using a poliovirus neutralization assay that assesses the ability of serial dilutions of participant sera to neutralize known amounts of type-specific Sabin poliovirus strains (Types 1, 2, and 3). An acceptable level of response was defined as participants who achieve detectable serum neutralizing antibodies at a ≥1:8 dilution of sera. The response of participants who received qHPV vaccine and REPEVAX™ together at Day 1 (concomitant) was compared to participants who received qHPV vaccine at Day 1 followed by REPEVAX™ 1 month later (non-concomitant). An analysis of non-inferiority compared response levels using methods developed by Miettinen and Nurminen adjusting for manufacturing facility for qHPV vaccine.

Poliovirus antibody was measured using a poliovirus neutralization assay that assesses the ability of serial dilutions of participant sera to neutralize known amounts of type-specific Sabin poliovirus strains (Types 1, 2, and 3). An acceptable level of response was defined as participants who achieve detectable serum neutralizing antibodies at a ≥1:8 dilution of sera. The response of participants who received qHPV vaccine and REPEVAX™ together at Day 1 (concomitant) was compared to participants who received qHPV vaccine at Day 1 followed by REPEVAX™ 1 month later (non-concomitant). An analysis of non-inferiority compared response levels using methods developed by Miettinen and Nurminen adjusting for manufacturing facility for qHPV vaccine.

Serum antibodies to Pertussis Toxoid Antibody (anti-PT) were measured with an enzyme-linked immunosorbent assay (ELISA). Titers were reported in ELISA units/mL (ELU/mL) and the lower limit of quantitation for the assay was 5.0 ELU/mL. GMTs from participants who received qHPV vaccine and REPEVAX™ together at Day 1 (concomitant) were compared to GMTs from participants who received qHPV vaccine at Day 1 followed by REPEVAX™ 1 month later (non-concomitant). An analysis of non-inferiority compared GMTs using an ANOVA model with a response of log individual titers and fixed effects for treatment group, manufacturing facility, study site, and the treatment-by-site interaction.

Serum antibodies to Pertussis Filamentous Haemagglutin Antibody (anti-FHA) were measured with an ELISA. Titers were reported in ELU/mL and the lower limit of quantitation for the assay was 3.0 ELU/mL. GMTs from participants who received qHPV vaccine and REPEVAX™ together at Day 1 (concomitant) were compared to GMTs from participants who received qHPV vaccine at Day 1 followed by REPEVAX™ 1 month later (non-concomitant). An analysis of non-inferiority compared GMTs using an ANOVA model with a response of log individual titers and fixed effects for treatment group, manufacturing facility, study site, and the treatment-by-site interaction.

Serum antibodies to Pertussis Pertactin (anti-PRN) were measured with an ELISA. Titers were reported in ELU/mL and the lower limit of quantitation for the assay was 5.0 ELU/mL. GMTs from participants who received qHPV vaccine and REPEVAX™ together at Day 1 (concomitant) were compared to GMTs from participants who received qHPV vaccine at Day 1 followed by REPEVAX™ 1 month later (non-concomitant). An analysis of non-inferiority compared GMTs using an ANOVA model with a response of log individual titers and fixed effects for treatment group, manufacturing facility, study site, and the treatment-by-site interaction.

Serum antibodies to Pertussis Fimbrial Agglutinogens Antibody (anti-FIM) were measured with an ELISA. Titers were reported in ELU/mL and the lower limit of quantitation for the assay was 5.0 ELU/mL. GMTs from participants who received qHPV vaccine and REPEVAX™ together at Day 1 (concomitant) were compared to GMTs from participants who received qHPV vaccine at Day 1 followed by REPEVAX™ 1 month later (non-concomitant). An analysis of non-inferiority compared GMTs for each HPV Type using an ANOVA model with a response of log individual titers and fixed effects for treatment group, manufacturing facility, study site, and the treatment-by-site interaction.