ArticleSaudi medical journal2026
The Al-Bahah Paradox: Divergent Patterns of Increased and Decreased Infectious Disease Incidence Relative to National Saudi Rates Over 12 Years of Surveillance.
Article in Saudi medical journal, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Objective: To identify statistically significant deviations in notifiable infectious disease incidence between Al-Bahah region and national Saudi averages, and to generate hypotheses that may inform future epidemiological, microbiological, and public health investigations. Methods: In April 2026, a 12-year retrospective ecological study (2013-2024) was conducted using surveillance data from the Saudi Ministry of Health for 37 notifiable infectious diseases across 20 health regions. Cumulative incidence rates, standardized morbidity ratios (SMRs), and Z-tests compared observed cases in Al-Bahah against national estimates. Results: Overall incidence was 15.8% lower in Al-Bahah than nationally (86.42 versus 102.68; incidence rate ratios = 0.842; Conclusion: Al-Bahah exhibited lower incidence of diseases including vector-borne and fecal-oral diseases but higher incidence of several other diseases like zoonotic, foodborne, and freshwater-associated infections relative to national rates. These ecological observations generate hypotheses regarding regional differences in disease transmission, diagnosis, surveillance, and healthcare utilization that warrant further investigation using individual-level data. If confirmed, such findings may have implications for region-specific public health planning, laboratory preparedness, and clinical decision-making.
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