Some parents believe that vaccinating their children puts them at risk for numerous disorders, including autism. A new study adds weight to the considerable amount of evidence that says otherwise. In adults, vaccination against influenza has been shown to reduce risk of stroke, heart attack, and all-cause mortality. Stroke in children was analyzed as well. Infection was reported within a week of stroke in 18% of patients compared to 3% of controls. Children with stroke were less likely to have received all or most of the recommended vaccinations. The idea that vasoactive medications present in common cold medicines was the cause was not supported.

Infection seems to act as a trigger for childhood stroke, while routine vaccinations appeared protective. A preceding infection in fact increases the risk sixfold.

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