seroprevention

例句：

1. 1. Seroprevention is the key to preventing diseases.
   预防接种是预防疾病的关键。
2. 2. The government has launched a campaign to encourage people to get their children vaccinated.
   政府已经启动了一个活动，鼓励人们让他们的孩子接种疫苗。
3. 3.Vaccination is an effective way to prevent the spread of infectious diseases.
   疫苗接种是一种有效的方法来预防传染病的传播。