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Why can the flu be more dangerous for the elderly or chronically ill?

The flu can be more dangerous for certain people, including the elderly and those with a chronic illness. The body's immune defenses become weaker after the age of 65, so it's harder for older people to fight the flu virus.

Likewise, certain medical conditions—and sometimes the medications used to treat them—can make it difficult to fight off flu infection. These include asthma and other chronic lung diseases, certain neurological conditions, disorders of the heart, blood, kidneys or liver, morbid obesity and conditions that suppress the immune system.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.