Flu Vaccine Cuts Mortality in Rheumatoid Arthritis Patients

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Flu Vaccine Cuts Mortality in Rheumatoid Arthritis Patients
Flu Vaccine Cuts Mortality in Rheumatoid Arthritis Patients

TUESDAY, July 31, 2018 (HealthDay News) -- Patients with rheumatoid arthritis (RA), particularly elderly patients, who receive the influenza vaccine have significantly lower morbidity and mortality, according to a study published in the June issue of the International Journal of Rheumatic Diseases.

Chun-Ming Chen, of the Ditmanson Medical Foundation Chiayi Christian Hospital in Chiayi City, Taiwan, and colleagues conducted a retrospective population-based cohort study using data from the Taiwan National Health Insurance Research Database. The Cox proportional hazards regression model was used to analyze the efficacy of influenza vaccination for 3,748 RA patients aged 18 years and older who were vaccinated in 2008, 2009, and 2010, and 3,748 matched RA patients who were not vaccinated.

The researchers, after adjusting for potential confounding factors, found that RA patients who received the influenza vaccine had reduced risk of hospitalization for septicemia, bacteremia, or viremia (hazard ratio, 0.65; 95 percent confidence interval, 0.45 to 0.94), and lower risk of mortality (hazard ratio, 0.62; 95 percent confidence interval, 0.39 to 0.97). The effectiveness of the influenza vaccination was particularly significant among elderly patients with RA.

"Receiving influenza vaccine by RA patients is associated with lower risk of hospitalization for septicemia/bacteremia/viremia and mortality," the authors write. "The risk reductions in the elderly RA patients were even greater."

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