4. TIFUS %EC%97%B4%EA%B5%90%EC%B0%A8%EB%8B%A8%EC%9E%AC %EC%8B%9C%EB%B0%A9%EC%84%9C %EB%B0%8F %EC%84%A4%EC%B9%98 %EB%A9%94%EB%89%B4%EC%96%BC