Maternal vaginal colonisation with Neisseria meningitidis serogroup B and late onset neonatal invasive meningococcal disease

Here we report a case of late onset neonatal invasive meningococcal disease that was vertically transmitted, with maternal vaginal swab at the time of delivery and neonatal cerebrospinal fluid culture positive for <i>Neisseria meningitidis</i>. Whole genome sequencing of meningococcal isolates in the neonatal cerebrospinal fluid and maternal vaginal found both Men-B ST-2506 (clonal complex 32) and identical (1 SNP difference on split kmer analysis).