Rebecca Bredow, 40, was sentenced to a week in jail Wednesday for contempt of court-closing a year-long legal battle between her and her ex-husband over the vaccination of their 9-year-old, Detroit News reported.
But Bredow fell foul of the law because she reneged on agreements with her former spouse dating back to November 2016 to have the boy immunised.
"This order has taken on a life of its own, your honor, and it is my fault I have not stood up sooner and explained to the court that I'm an educated, vaccine-choice mother", she said.
The mother-of-two was handcuffed in court and escorted out of the room by deputies.
FOX 2's Charlie Langton reports Rebecca Bredow's ex-husband wished to vaccinate their son, but she did not and is the primary caregiver.
Anti-vaccination advocates - or anti-vaxxers - believe that immunising children exposes them to harm, and could be linked to autism.
Barbara Loe Fisher, president of the National Vaccine Information Centre, told the BBC that the federal government doesn't legislate child vaccinations, but they do issue recommendations to states or local school districts.
Last month, she said that she and her son's father agreed to space out and delay getting their son vaccinated.
In Michigan, parents are allowed to avoid having their children immunized if it conflicts with their religious or personal beliefs.
Child immunisation rates in MI are also among the worst in the USA, ranking 43rd out of the 50 states, according to Mlive. Two, I comprehend you cherish your youngsters yet what I don't think you comprehend is that your son has two guardians, and father gets a say.
For that reason, many anti-vaccine parents choose to home-school their children, Mrs Fisher told the BBC.