Sanayama, Hidenori, Yuka Hayashi, and Takahiko Fykuchi. 2026. “Should the Traditional Algorithm for Syphilis Screening Be Abandoned? Neurosyphilis Presenting As Limbic Encephalitis: A Prozone False-Negative RPR Missed by an RPR-only Initial Screen”. European Journal of Case Reports in Internal Medicine 13 (10). https://doi.org/10.12890/2026_007473.