A pre-existing medical issue that can increase a person's vulnerability to contracting coronavirus and/or dying from it.
Anything which renders someone less than optimally healthy,
compromising their
immunity.
Being human.
Just being alive felt like an underlying condition. Her
asthma was an additional factor, she supposed, but each day she was getting news of yet another person
coming down with corona. They were old, middle-aged, young, healthy or not.