Researchers Analyze US Brucellosis Hospital Trends
A new retrospective study identifies 875 brucellosis cases within 147 million hospital admissions between 2017 and 2020.
Updated on Oct. 26, 2026 in Diseases — General
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A retrospective study using the National Inpatient Sample database identified 875 cases of brucellosis among 147 million US hospital admissions from 2017 through 2020. The prevalence of the disease reached approximately 0.6 cases per 100,000 admissions.
Why it matters
The investigation was prompted by a lack of recent, comprehensive US epidemiologic data regarding this condition. The findings highlight significant demographic and regional disparities in patient diagnosis rates.
The study recorded an adjusted odds ratio of 3.70 for Hispanic patients, while the South and West regions showed adjusted odds ratios of 1.74 and 1.84, respectively. Overall, 62.9% of those diagnosed were male.
The players
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The details
Using multivariable logistic regression, researchers found that patients in large hospital facilities were more likely to receive a brucellosis diagnosis than those in smaller settings. The demographic breakdown showed 47.3% of patients were White and 34.7% were Hispanic, with smaller percentages identifying as Black, Asian or Pacific Islander, or Native American.
Timeline
The study analyzed inpatient data collected between 2017 and 2020.
The research findings were presented at IDWeek in Washington, DC, on October 21-24, 2026.
Health Landscape
This study follows a pattern of using the National Inpatient Sample database to extract large-scale epidemiological insights. It updates the understanding of rare disease prevalence within the broader healthcare system.
These findings provide healthcare providers with better context regarding which patient demographics and regions may show higher instances of brucellosis. Awareness of these disparities can assist clinicians in diagnostic decision-making and patient history inquiries.
The takeaway
The research serves as a critical update to the limited epidemiologic data available for brucellosis in the United States. It underscores the importance of regional and demographic awareness for medical professionals when evaluating potential diagnoses.
Further reading
For more information on similar health trends, visit the Diseases — General section.
Source note: This article includes information reported by Infection Control Today.
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