False-positive dengue IgM in <i>Streptobacillus moniliformis</i> rat-bite fever: the need to look beyond the rapid test—a case report

This case highlights the diagnostic challenge posed by cross-reactive dengue serology in RBF, emphasizing the need to avoid relying solely on IgM positivity for diagnosing dengue fever. Although comparatively less common, clinicians should be aware of non-specific clinical presentations of RBF, particularly in dengue-endemic areas, and that molecular diagnostic techniques may aid in correct identification and management.