Abstract:
BACKGROUND:4CMenB (Bexsero), a vaccine developed against invasive meningococcal disease caused by capsular group B strains (MenB), was recently licensed for use by the European Medicines Agency. Assessment of 4CMenB strain coverage in specific epidemiologic settings is of primary importance to predict vaccination impact on the burden of disease. The Meningococcal Antigen Typing System (MATS) was developed to predict 4CMenB strain coverage, using serum bactericidal antibody assay with human complement (hSBA) data from a diverse panel of strains not representative of any specific epidemiology. OBJECTIVE:To experimentally validate the accuracy of MATS-based predictions against strains representative of a specific epidemiologic setting. METHODS AND RESULTS:We used a stratified sampling method to identify a representative sample from all MenB disease isolates collected from England and Wales in 2007-2008, tested the strains in the hSBA assay with pooled sera from infant and adolescent vaccinees, and compared these results with MATS. MATS predictions and hSBA results were significantly associated (P=0.022). MATS predicted coverage of 70% (95% CI, 55-85%) was largely confirmed by 88% killing in the hSBA (95% CI, 72-95%). MATS had 78% accuracy and 96% positive predictive value against hSBA. CONCLUSION:MATS is a conservative predictor of strain coverage by the 4CMenB vaccine in infants and adolescents.
journal_name
Vaccinejournal_title
Vaccineauthors
Frosi G,Biolchi A,Lo Sapio M,Rigat F,Gilchrist S,Lucidarme J,Findlow J,Borrow R,Pizza M,Giuliani MM,Medini Ddoi
10.1016/j.vaccine.2013.08.006subject
Has Abstractpub_date
2013-10-09 00:00:00pages
4968-74issue
43eissn
0264-410Xissn
1873-2518pii
S0264-410X(13)01090-6journal_volume
31pub_type
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