New CDC data shows MMR vaccination among kindergarteners declining slightly as non-medical exemptions climb to 4.2%

A week after Donald Trump made a series of misleading claims about vaccines – including that some injections look “like the size of a soda bottle” – the Centers for Disease Control and Prevention (CDC) released the latest data on national kindergarten vaccination rates.

CDC communications downplayed the changes – a three-sentence announcement said, “overall vaccination rates among kindergarteners remained high” – but medical experts immediately saw cause for concern in the trends.