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Figure 1 | BMC Infectious Diseases

Figure 1

From: Effects of campaign for postpartum vaccination on seronegative rate against rubella among Japanese women

Figure 1

Regional differences in prevalence rate of pregnant women susceptible to rubella. A, Hokkaido prefecture; B, Toyama prefecture; C, Tochigi prefecture, D, Tokyo 1; E, Tokyo 2; and F, Kanagawa prefecture. Closed, shaded and open bars indicate hemagglutination inhibition assay (HI) titers of <  8×, 8×, and 16×, respectively. Total number of pregnant women tested is indicated at the bottom.

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