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. 2019 Feb 22;19:186. doi: 10.1186/s12879-019-3816-7

Fig. 1.

Fig. 1

Monthly inpatient RVGE rates per 10,000 person-years, United States, July 2001–June 2016, children 0–4 years.a. Legend: a: less than 1 year of age, b: 1 year of age, c: 2 years of age, d: 3 years of age, e: 4 years of age a Time series includes all years (including 2007 transition year) and all months (not restricted to the historic rotavirus season), Vertical dashed line represents July 2006 (time of vaccine introduction)