Flu Vaccine Linked to Lower Cardiovascular Risk


Flu Vaccine Linked to Lower Cardiovascular Risk


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Influenza vaccination is associated with a lower risk of cardiovascular events among those at high risk of cardiovascular disease, particularly among those with more active coronary disease, according to a review and meta-analysis published in the Oct. 23/30 issue of the Journal of the American Medical Association.


Jacob A. Udell, M.D., M.P.H., from the University of Toronto, and colleagues identified and performed a meta-analysis of five published and one unpublished randomized clinical trials involving 6,735 patients at high risk of cardiovascular disease and comparing influenza vaccine versus placebo or control. The mean follow-up time was 7.9 months.


The researchers found that influenza vaccination was associated with a significantly lower risk of composite cardiovascular events (2.9 versus 4.7 percent; relative risk 0.64). The lower risk was largely confined to patients with a recent history of acute coronary syndrome (within one year of randomization; relative risk, 0.45; P < 0.001) compared to those without a recent history of acute coronary syndrome (relative risk, 0.94; P = 0.81).


“In a meta-analysis of randomized clinical trials, the use of influenza vaccine was associated with a lower risk of major adverse cardiovascular events,” Udell and colleagues conclude. “The greatest treatment effect was seen among the highest-risk patients with more active coronary disease.”


Several authors disclosed financial relationships with pharmaceutical companies.


Original post: PhysiciansBriefings.com 



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