Volume 20, Number 7—July 2014
Research
Changes in Capsule and Drug Resistance of Pneumococci after Introduction of PCV7, Japan, 2010–2013
Figure 1

Figure 1. Distribution of general hospitals participating in surveillance for invasive pneumococcal disease, Japan, April 2010–March 2013Numbers in light gray circles show the number of the hospitals in each prefectureNumbers in dark gray circles show the number of hospitals in Tokyo and Osaka.