National annual numbers of cases, ranging from 125 in 2024 to 1800 in 2018, were reported during 2018–2024, with the incidence showing a decreasing trend peaking at 0.13 per 100,000 population in 2018, and down to the lowest level of 0.0089 per 100,000 population in 2024.
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Immunogenicity, immune persistence, and safety of japanese encephalitis vaccine schedules among adults in Ningxia, China.
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Trend test (Z = −4.8656, P < 0.0001) indicates a significant trend in SPP by age group.