Yadav S, Manglani MV, Narayan DA, Sharma S, Ravish HS, Arora R, Castells VB, Arya S, Oster P. Safety and immunogenicity of a quadrivalent meningococcal conjugate vaccine (MenACYW-DT): a multicenter, open-label, non-randomized, phase III clinical trial.
Indian Pediatr 2015;
51:451-6. [PMID:
24986280 DOI:
10.1007/s13312-014-0435-7]
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Abstract
OBJECTIVE
To assess the safety and immunogenicity of a quadrivalent meningococcal (groups A,C,Y,W) polysaccharide diphtheria toxoid conjugate vaccine (MenACYW-DT) in India.
DESIGN
Open-label, descriptive, non-randomized study.
SETTING
Three medical college hospitals, one each in New Delhi, Bengaluru and Mumbai, India.
PARTICIPANTS
300 healthy, vaccine-naïve participants (100 children aged 2-11 years, 100 adolescents aged 12-17 years, and 100 adults aged 18-55 years).
INTERVENTION
One dose (0.5 mL) of MenACYW-DT administered intramuscularly.
MAIN OUTCOME MEASURES
Serum bactericidal antibody titers against A, C, Y, and W were measured before and after MenACWY-DT vaccination. Safety data were also collected.
RESULTS
Thirty days post-vaccination, geometric mean titers rose across all serogroups. Most participants had protective titers >8 (1/dil) across the four serogroups. The percentage (95% CI) achieving >8 (1/dil) in the Adolescent Group was typical - A: 96.9% (91.2%; 99.4%); C: 96.9% (91.2%; 99.4%); Y:100% (96.3%; 100%); W:100% (96.3%; 100%). In general, solicited reactions were mild and short-lived. Unsolicited events were uncommon and unrelated to vaccination.
CONCLUSIONS
MenACYW-DT was well tolerated and elicited a robust and protective immune response 30 days post-vaccination against meningococcal serogroups A, C, Y, and W-135 in the Indian study participants aged 2-55 years.
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