Tetanus is a severe infection characterized by painful muscular contractions, especially of the jaw and neck muscles. In developing countries, this disease is almost always fatal.

• 破伤风是一种严重的传染性疾病，表现为有痛感的肌肉收缩，特别是咀嚼肌。在发展中国家，该疾病几乎总会致死。