These are the percentage rates for 2017 for Diphtheria, tetanus, pertussis, and Measles. I find it worrying that the US is lower than a lot of countries most of

These are the percentage rates for 2017 for Diphtheria, tetanus, pertussis, and Measles. I find it worrying that the US is lower than a lot of countries most of us would assume as being less developed.