Three teachers shared a summer classroom at a school in the small town of Winkelman, Arizona, in June.
Nothing unusual about that.
But according to CNN, all three contracted the novel coronavirus COVID-19.
One of them died from the disease.
Kimberley Chavez Lopez Byrd was 61.
She died June 26, less than two weeks after she tested positive.
The other two teachers -- Jena Martinez and Angela Skillings -- said they're still struggling with the effects of the virus.