variola minor

例句：

1. 1. The vaccine against smallpox has been developed to prevent the disease.
   已经开发了针对天花的疫苗来预防这种疾病。
2. 2. Smallpox is ahighly contagious disease that can bedeadly.
   天花是一种高度传染性的疾病，可能致命。
3. 3. The World Health Organization recommendsvaccination against smallpox for travelers.
   世界卫生组织建议旅行者接种天花疫苗。