婴儿在两个月大时需要接种疫苗。

Babies need to get a ___vaccination at two months old.

政府正在全国范围内推广疫苗接种以控制流感传播。

The government is promoting ___vaccination nationwide to control the spread of flu.

我今天下午要去打流感疫苗。

I have my flu ___vaccination appointment this afternoon.