Given a scientific passage and an answer, generate a question for the given answer.
Q: Passage: Malaria is common in tropical and subtropical climates throughout the world (see Figure below ). In fact, malaria is one of the most common infectious diseases on the planet. Malaria is also a very serious disease. It kills several million people each year, most of them children. Answer: tropical and subtropical
A:
What type of climates is malaria commonly found in?