[feature request] Make minimum age limit logical

[aahnik]

when we set the min age limit to 18 it shows above 45 vaccines also.

It's better to have two options

1. 18 - 45
2. above 45

When someone is selecting 18, they are expecting to see the 18-45 vaccines.

If nothing is available, it should show an empty list, instead of showing the ones above 45.