Apparently the vaccine doesn’t work for very long, if it works at all. That is why they want all middle and high schoolers to get the shot.
The babies who died were too young to get the shot. Many of the older kids had been vaccinated but the immunity didn’t last.
It is part of the 3part vaccine that infants get...Pertussin aka whopping cough was given to me in the 40’s and my children in the 50’s and 60’s starting at 3 months with booster a little later...don’t remember if the booster was at 5 or earlier....but we have lots of illegals crossing the border and in some states illegals are treated differently than citizens...