As per a review study, published in 2021, In India, Neisseria meningitidis is the third most common cause of acute bacterial meningitis (ABM) in children <5 years, and accounts for an estimated 1.9% of all ABM cases regardless of age. The disease remains endemic in India, with major outbreaks reported in Delhi (2005-08), Meghalaya (2008-09), and Tripura (2009) over the last 25 years. Twelve serotypes of N. meningitidis have been identified, of which, 6 (A, B, C, W, X, and Y) have been associated with disease outbreak, the review study of publications on meningococcal disease in India between 1996 and 2020 found.
