The department said the woman, who was from the eastern part of the state, made her coffee in the evening then drank it the next morning, The (Cedar Rapids, Iowa) Gazette reported Monday.

The woman told officials that when she went to change the filter that evening, she found the dead bat inside.

Ann Garvey, a veterinarian with the department, said the woman underwent treatment for rabies after the bat corpse's brain was found by the University Hygienic Laboratory in Oakdale, Calif., to have been too cooked by the coffee maker for rabies testing.