5 shots seems a little over much. I know I got plenty of tetanus shots as I was a bit adventurous. But that was when injured. Sure I had the required immunization then the 1 booster but after that only as stated above. Could be my mom had the sense to know when medical care for an injury would be needed along with a booster.
The heavy schedule may be because doctors know so many parents are feckless no-counts who haven’t a clue about basic child care let alone how to deal with a child stepping on a rusty nail.
They keep adding more and more shots to the schedule for more and more diseases.
Now, by the time the child is only 18 months old, he’s had more than 20 shots. And the shots continue after that. No wonder some parents balk at all the shots.