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. Author manuscript; available in PMC: 2016 May 23.
Published in final edited form as: N Engl J Med. 2013 Jul 11;369(2):155–163. doi: 10.1056/NEJMoa1209165

Fig. 1.

Fig. 1

US age-specific average annual rates of all-cause pneumonia hospitalizations per 100,000, for three periods: 1997–1999 (pre-PCV7), 2001–2006 (early PCV7), and 2007–2009 (late PCV7).