Michigan Sees Sharp Drop in Child Vaccinations as RFK Jr. Policies Take Effect

Childhood vaccination rates in Michigan fell dramatically during the first year of the Trump administration, with completion rates dropping nearly three percentage points. Health officials attribute the decline to anti-vaccine messaging from Health Secretary Robert F. Kennedy Jr. and immigration enforcement fears keeping Latino families away from clinics.

Childhood immunization rates have plummeted in Michigan during the opening year of President Trump’s second term, according to new data analysis that shows the influence of vaccine-skeptic Health Secretary Robert F. Kennedy Jr. on American healthcare practices.

State records reveal that Michigan experienced a dramatic decrease in vaccination completion rates among toddlers, offering one of the first concrete glimpses into how Kennedy’s anti-vaccine stance is affecting public health nationwide. Michigan stands out among states for providing detailed monthly vaccination statistics, while comprehensive national figures won’t be available until later this year.

The data analysis examined how many toddlers received their complete series of seven essential vaccines – including measles, mumps and rubella (MMR), whooping cough, and hepatitis B shots – before turning three years old, which represents the federal health standard.

Between January 2025 and January of this year, completion rates dropped nearly three percentage points to 66.5%. This represents a decline roughly 13 times larger than typical annual variations seen over the past 18 years. Only the COVID-19 pandemic in 2020 and the 2008 financial crisis produced steeper drops in Michigan’s vaccination rates.

The analysis found that white children, who make up the largest demographic group, and Hispanic children experienced the most significant decreases. Public health experts, parents, researchers and community advocates interviewed across Michigan identified Kennedy’s persistent criticism of vaccines as the primary factor influencing white families, while Trump administration deportation efforts have deterred Latino families from visiting public health clinics.

Stanford University epidemiology professor Mathew Kiang expressed concern about the Michigan trends, noting the state’s size and demographic diversity make it a meaningful indicator.

“What’s happening there is almost certainly happening in other states,” Kiang said.

State data indicates that approximately 4,500 additional toddlers in Michigan now face heightened vulnerability to serious diseases due to the 2025 vaccination decline. These unvaccinated children also create risks for infants too young for immunization and adults with compromised immune systems, according to health authorities.

Oakland County epidemiologist Lauren Fink emphasized the broader implications in an email statement: “Even if the public health impact of one vaccine in one arm is unmeasurably small, every unvaccinated child is at risk.”

Kennedy has spent years promoting claims, contradicted by scientific research, that standard childhood immunizations cause autism and chronic illnesses while posing greater dangers than the diseases they prevent. Since assuming his role as the nation’s top health official, Kennedy has amplified these anti-vaccine messages through government channels, bringing views previously confined to specialized social media groups into mainstream federal communication.

Rachel Atwood, a long-time vaccine skeptic from western Michigan, noted the shift in public discourse: “People are becoming a little more open to questioning things because RFK Jr is pushing out information that has never been really readily available on mainstream media.”

Atwood supports Kennedy’s position that America dedicates excessive resources to infectious disease prevention rather than addressing chronic conditions like diabetes and obesity.

Kennedy has also restructured the childhood vaccination recommendation process, removing the existing national advisory board and installing members who share his perspectives. This new board recently guided federal officials to reduce recommended childhood immunizations despite lacking fresh evidence of vaccine harm. However, a federal judge blocked these changes Monday, agreeing with major medical organizations that argued the modifications would undermine vaccine confidence and reduce immunization rates.

Health and Human Services Department spokesman Andrew Nixon disputed Kennedy’s role in declining vaccination rates, instead blaming Michigan’s aggressive COVID-19 response, including school closures and mask requirements, for eroding public trust in health policies.

“Restoring confidence in public health, not repeating the mistakes of the pandemic era and failed policies from states like Michigan, is the path to stronger vaccination uptake over time,” Nixon said. He declined to address the decline among Hispanic children.

Dr. Natasha Bagdasarian, Michigan’s chief medical executive, distinguished the state’s 2025 immunization patterns from previous years, noting that vaccination rates had stabilized following the pandemic. Bagdasarian identified Kennedy’s rhetoric and policies as new factors creating doubt and confusion among families.

“Michigan is not failing,” Bagdasarian said. “I think we are being failed by some of the rhetoric that is being put out at the national level.”

The United States achieved measles elimination status in 2000 due to high vaccination coverage at that time. Increasing vaccine reluctance has gradually undermined this accomplishment.

Over the past year, America has confronted its most severe measles outbreaks in decades, beginning in Texas and continuing recently in South Carolina. At least two children have died and dozens required hospitalization, with most victims being unvaccinated. Michigan experienced surging whooping cough cases in 2024 that continued into 2025.

Rather than advocating widespread vaccination to control these outbreaks, Kennedy has characterized immunization decisions as personal choices to be made through doctor consultation.

Noah Sliwa, a Lansing father of two, said Kennedy’s policies have validated his family’s approach. He and his wife had already chosen to space out their children’s vaccinations to better monitor potential side effects and opted against the birth dose hepatitis B vaccine for both children, contrary to previous federal recommendations.

“We felt more understood,” said Sliwa. “It felt normalized.”

Michigan health officials interviewed described observing direct connections between Kennedy’s views and vaccination rate changes. Statewide 2025 data shows nearly a three-percentage-point decrease in toddlers receiving their initial MMR shot, which Kennedy frequently criticizes.

Among white toddlers statewide, the seven-shot series completion rate fell four points to 67.5% between January 2025 and January of this year. Hispanic toddlers saw a 4.6-point drop to 69.8% during the same timeframe. Federal officials established an 80% series completion target for nationwide disease prevention over ten years ago, though they have concentrated on improving specific vaccine uptake since the pandemic.

Letha Martin, who supervises immunization programs in Oakland County north of Detroit, provides training for nurses on addressing parental vaccine hesitancy. The populous, predominantly white suburban county experienced a 2.9-percentage-point decline in toddler vaccination rates from January 2025 to January 2026, according to the analysis.

Martin reported that parents frequently expressed safety concerns about childhood shots when requesting exemptions from state vaccine requirements. Now families reference Kennedy’s specific arguments, such as claims that vaccine clinical trials inadequately test for adverse effects.

“Those are very, very particular concerns,” Martin said.

Within Michigan’s Latino community, childhood vaccination series completion rates had partially rebounded after COVID-19. However, intensified Trump administration immigration enforcement prompted more families to restrict activities outside their homes, including medical appointments, due to deportation fears, according to local health officials and advocates.

Centro Multicultural La Familia, a Latino advocacy organization in Oakland County, collaborates with county officials to organize periodic vaccination clinics. Previously, up to twelve people would typically attend these immunization sessions, said Oakland County Health Officer Kate Guzmán.

As deportation activities intensified in Michigan last year, Guzmán noted that no one attended the vaccine clinic held at the county health department, which is located adjacent to the local jail and sheriff’s department.

Detroit community leader Angela Reyes, who facilitates partnerships between Latino organizations and local health departments, reflected on the broader implications: “One of the greatest public health achievements was vaccinations, and we’re going backwards.”