Harvard Men's Health Watch

Flu shot: Good insurance, not a guarantee

Not everyone who gets a flu shot will obtain full immunity from infection, but it’s still worth getting. It’s especially important for people with lung disease, cardiovascular disease, and other chronic conditions. Severe flu infection can be dangerous. About 90% of deaths from flu occur in people 65 and older. In addition to vaccination, frequent hand washing and avoiding public places can reduce the chances of getting the flu. If the flu does strike, taking antiviral medication may reduce the severity and duration of the illness.
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