4. TIFUS %EA%B1%B4%EC%8B%9D %EC%99%B8%EB%8B%A8%EC%97%B4%EC%8B%9C%EC%8A%A4%ED%85%9C %EC%8B%9C%EA%B3%B5 %EC%82%AC%EC%A7%84%28%EC%B0%B8%EC%A1%B0%29