Given the task definition and input, reply with output. Given a scientific passage and an answer, generate a question for the given answer.

Passage: Often, new diseases result from the spread of an existing disease from animals to humans. A disease that can be spread from animals to humans is called a zoonosis . When a disease breaks out, scientists called epidemiologists investigate the outbreak, looking for its cause. Epidemiologists are like detectives trying to solve a crime. The information epidemiologists learn is important to understand the pathogen, and help prevent future outbreaks of disease. Answer: zoonosis
What is a disease that can be spread from animals to humans called?