Flu Vaccine Your Best Shot for Staying Healthy

Annual vaccination helps prevent influenza infections, and also has long-term benefits

Even for people who believe strongly in vaccination, the flu shot can be a tough sell. Many Canadians believe that they are healthy enough to fight off the infection, or don’t trust the flu shot because being vaccinated in a previous year didn’t prevent them from getting sick. This sentiment can be magnified when people catch other winter illnesses, such as the cold, which are commonly mistaken for the flu.

Only one third of Canadians get the flu shot.

Her research shows that elderly mice that received flu vaccines when they were young stayed healthier and were less likely to develop chronic illnesses as seniors. By contrast, older mice that were not vaccinated were more prone to early development of other diseases, and if they became infected with the flu, the infection accelerated the progress to chronic illness in the long term.

The reason why respiratory illness contributes to these diseases is not well understood, but they are all associated with chronic inflammation. Even after fighting off a pneumonia infection, levels of inflammation can remain slightly elevated; the effect of having been infected doesn’t simply go away. For patients who were already predisposed to developing dementia or type II diabetes, this added stress may that push them over the line.

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