A man takes his wife to get tested.
Two days later, he gets a call from the lab.
Doctor: I'm sorry to inform you that your wife's test results were mixed up with another patient's. We're not sure if she has COVID-19 or Alzheimer's disease.
Man: So, what am I supposed to do?
Doctor: Take her for a long walk and leave her. If she finds her way back home, don't open the door.