It emerged 5.1 percent of flu-vaccinated patients had developed Alzheimer’s, compared to 8.5 percent of their non-vaccinated peers.
Paul E. Schulz, Rick McCord Professor in Neurology at McGovern Medical School, and also a senior author of the study, added: “Since there is evidence that several vaccines may protect from Alzheimer’s disease, we are thinking that it isn’t a specific effect of the vaccine.
“Instead, we believe that the immune system is complex, and some alterations, such as pneumonia, may activate it in a way that makes Alzheimer’s disease worse.
“But other things that activate the immune system may do so in a different way – one that protects from Alzheimer’s disease.
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