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>In Belgium, the syphilis notification rate was 14.51 per 100,000 people in 2023, according to a study published on ScienceDirect.com
>In Japan, the syphilis rate per 100,000 population varies, with a median of 2.34 cases (range: 0.72-12.90) across prefectures, according to J-Stage and the National Institutes of Health (NIH).

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