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. 2016 Feb 9;16:73. doi: 10.1186/s12879-016-1408-3

Fig. 1.

Fig. 1

Quarterly number of patients with bacteremia caused by Moraxella catarrhalis, Streptococcus pneumoniae, or Haemophilus influenzae. X-axis denotes quarterly periods between April 2008 and June 2014. Y-axis denotes the incidence of bacteremia caused by M. catarrhalis, S. pneumoniae and H. influenzae. Abbreviations: Hib, Haemophilus influenzae type b; PCV7, 7-valent pneumococcal conjugate vaccine; PCV13, 13-valent pneumococcal conjugate vaccine; NIP, national immunization program in Japan