Over time will the immunity acquired from a vaccination almost ‘expire’ leaving you no longer exempt?

Question: Over time will the immunity acquired from a vaccination almost 'expire' leaving you no longer exempt?
- Keywords:
  health,
  immune system,
  vaccine
Asked by to Daryl on 25 Jun 2014. This question was also asked by .
- Daryl Jones answered on 25 Jun 2014:
  
  Hi maddyplows
  
  The immune system becomes weaker, so yes we do become “exempt” and have to have boosters or completely new vaccinations!

Question: Over time will the immunity acquired from a vaccination almost 'expire' leaving you no longer exempt?