Volume 6, Number 1—February 2000
Perspective
Japanese Encephalitis Immunization in South Korea: Past, Present, and Future
Figure 4

Figure 4. A. Plaque-reduction neutralizing antibody titers (PRNT) according to interval since last booster injection with Nakayama vaccine among 311 South Korean children, 1996. B. PRNT antibody seropositivity rate according to the interval since last booster injection.
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