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Pneumococcal meningitis by ‘PCV period’: number of months before any PCV October 2005–April 2007, with PCV7 (May 2007–April/May 2012), and PCV13 universal vaccination (May/June 2012–September 2018). Cases per month (n = 16).
PCV13 impact (PCV13 implemented in May 2012) was based on the decreased % of number of cases following PCV13 introduction.
PCV, 13-valent conjugate vaccine.
