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Why the flu turns deadly for older adults, and how scientists found the cause

Researchers have uncovered why older adults are more vulnerable to severe flu. The culprit is a protein called ApoD, which rises with age and disrupts the body’s ability to fight infection. This protein damages lung tissue and weakens immune defenses, leading to worse outcomes. By pinpointing ApoD as the driver, scientists now see a promising new treatment target that could protect elderly patients from life-threatening influenza and dramatically cut flu-related deaths.

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