Vaccinations

The States Where Vaccinations Are Falling

A new Health Testing Centers study used Centers of Disease Control and Prevention (CDC) data to determine where vaccination rates are rising and falling across the United States. It focused on vaccination rates for MMR, DTAP, Varicella, Hepatitus B and Polio among kindergartners, and alarmingly, it found that over half of U.S. states have experienced a decline in the past decade. It noted that vaccination rates among children have fluctuated considerably in recent years and that while annual changes of 1 percent or less may seem insignificant, such tiny deviations represent thousands of kids who are theoretically susceptible to serious outbreaks of disease.

Anti-vaccination sentiment is one of the chief reasons behind the decline but there are others such as a lack of access to healthcare and low rates of health insurance among low-income families. Despite the decline, progress is still being made in some parts of the country with South Carolina and Iowa reporting a rise of 8.5 percentage points between 2009 and 2018. West Virginia and Rhode Island also experienced increased of 7.7 and 7.4 percentage points respectively.

27 states are falling short on shots and over the past decade, both Georgia and Arkansas saw their vaccination rates fall by more than six percentage points. Utah and Oklahoma also saw theirs decline by more than four percentage points. When it comes to measles, mumps and rubella, three states now have vaccination rates of less than 90 percent - Colorado, Kansas and Idaho. all states with the exception of Alaska, Colorado, Hawaii, New Hampshire, New Jersey, North Carolina and Wyoming (these states did not report their data to the CDC).

Description

This chart shows the percentage point difference in vaccinated kindergartners (2009 vs 2018).

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States with the lowest percentage of children receiving recommended immunizations in the U.S. as of 2021*
Percentage of children aged 19-35 months who are vaccinated against measles, mumps and rubella (MMR) in the U.S. from 1995 to 2017
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Share of children in kindergarten who had received the MMR vaccine in the United States in 2024/25, by state
Share of children born in the United States from 2013 to 2022 who were vaccinated against measles, mumps, and rubella (MMR) by age 24 months
Median weekly percent change in MMR vaccinations in 2020 among U.S. children aged 2-8 years due to the COVID-19 pandemic compared to 2018-2019, by state
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Percentage of infants with at least one parental vaccination refusal in the U.S. from 2010 to 2016, by state*

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