n.接种疫苗；种痘
So vaccination efforts could target those areas. 所以接种疫苗的努力能针对那些地方。
Vaccination has made smallpox a very rare disease. 接种疫苗已使天花成为一种很稀罕的疾病。
And here is my vaccination certificate. 这里还有我的种痘证书。
