With almost 15 million cases of coronavirus and over 280,000 deaths in the U.S., we have fortunately learned much about COVID-19 prevention measures and treatments since the early days of the pandemic, and a vaccine is now in sight. Most of our knowledge regarding  risk factors for worse outcomes, include immunocompromised status, diabetes, older age and high blood pressure.

One risk factor remains hidden in plain sight: obstructive sleep apnea.

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