n.牛痘(病毒引起的牛疾病，可传染人类，牛痘病毒过去用于制天花疫苗)

The vaccine against smallpox was developed by using cowpox virus, which is less harmful to humans.
天花疫苗是通过使用对人类危害较小的牛痘病毒研发出来的。
During the 18th century, Edward Jenner discovered that exposure to cowpox provided immunity against smallpox.
在18世纪，爱德华·詹纳发现接触牛痘可以使人免疫天花。
Farmers often contract cowpox from infected cattle, but it rarely leads to serious health issues in humans.
农民经常从受感染的牛身上感染牛痘，但这种疾病在人类中很少导致严重的健康问题。
In veterinary medicine, cowpox vaccinations are used to protect cats from feline cowpox disease.
在兽医学中，牛痘疫苗被用来保护猫免受猫牛痘病的侵害。
Although cowpox primarily affects cows and other livestock, it can occasionally be transmitted to humans via direct contact.
尽管牛痘主要影响牛和其他家畜，但偶尔也可能通过直接接触传播给人类。
She had to take time off work due to an accidental exposure to cowpox while working at the animal shelter.
她在动物收容所工作时意外接触到牛痘，因此不得不休假。
Cowpox lesions typically appear on the hands or forearms of those who have been in close contact with infected animals.
牛痘病变通常出现在那些与患病动物有过密切接触的人的手部或前臂上。
The last known case of cowpox infection in the UK was reported in 2019 among a group of veterinarians.
英国最近一例已知的牛痘感染病例是在2019年报告的，涉及一群兽医。
Historically, cowpox played a pivotal role in the development of the first successful vaccine for a contagious disease.
历史上，牛痘在开发出首个针对传染病的成功疫苗中发挥了关键作用。
Despite being eradicated from most parts of the world, cowpox remains a concern for individuals working in close proximity to farm animals.
尽管牛痘在世界大部分地区已被消灭，但对于那些在农场动物附近工作的个人来说，它仍然是一个值得关注的问题。