Olympic gold medalist Mary Lou Retton is in the intensive care unit battling what her daughter calls a rare form of pneumonia.
How can someone so seemingly healthy as a 55-year-old world class gymnast spiral into intensive care from pneumonia?
Dr Catherine Myers is a pulmonologist at Northwestern Medicine Canning Thoracic Institute.
She joined the WGN Evening News to talk about the risk, when to seek medical attention and how to protect ourselves against pneumonia.
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