revaccination

例句：

1. 1. After the initial vaccination, we need to revaccinate the children every year.
   初次接种后，我们需要每年为孩子们重新接种。
2. 2. The government is considering revaccinating the population against the new virus.
   政府正在考虑对人群进行新的病毒重新接种。
3. 3. Doctors recommend that everyone over 65 should get a booster shot before the next fluseason.
   医生建议所有65岁以上的人在下一个流感季节前接种加强针。