Measles outbreak tied to counties with low vaccination rates

Five of the six counties reporting a measles cases have seen drops in their kindergarten vaccination rates, including one showing a 24 percentage point dip.

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Local News

April 3, 2025 - 2:25 PM

A 3D graphic representation of a spherical-shaped, measles virus particle, that was studded with glycoprotein tubercles. Photo by Aliss Eckert / Centers for Disease Control and Prevention / Kansas Reflector

TOPEKA — Five of the six southwest Kansas counties reporting measles cases have seen kindergarten vaccination rates drop, one showing a 24 percentage point dip over a four-year period.

Vaccination rates are one focus of many Kansas county health officers and medical experts as they work to educate against misinformation about vaccines in the hopes of staving off a growing measles outbreak. As of April 2, Kansas has 24 confirmed measles cases in Grant, Gray, Haskell, Kiowa, Morton and Stevens counties, with one case added in the last week.

For herd immunity to be achieved — the point where enough people are vaccinated that those who are unvaccinated will be protected — 95% of a population must be vaccinated against measles, according to the World Health Organization. The Kansas measles immunization rate of kindergarteners dropped from 94.47% in 2019 to 90.21% in 2023, Kansas Department of Health and Environment data shows.

Jennifer Bacani McKenney, a family physician and county health officer in Wilson County, said she saw vaccine hesitancy increase after the COVID-19 pandemic.

“COVID made it more OK for people to decline vaccines for themselves and for children,” she said.

The idea, though, that some counties are seeing kindergarten vaccination rates drop — such as Gray County, where the rate declined from 85% in 2019 to 61% in 2023 — is concerning, Bacani McKenney said.

“When we’re getting to those points when barely the majority are vaccinated, that’s when these diseases have a chance to come back,” she said. “We know vaccines work. Polio is still probably the No. 1 example. For the longest time, so was measles, and now we’re at the point where we can’t use measles as an example.

“We are very voluntarily not protecting ourselves against a very preventable illness,” Bacani McKenney said. “The people who are suffering are really not us adults. It’s going to be our children.”

Haskell County also hit a double-digit drop in vaccination rates, with 21% fewer kindergarteners being vaccinated over that same four-year period.

Vaccinations are required for school in Kansas unless there is a religious or medical exemption. KDHE and the Kansas State Department of Education track the percentage of kindergarteners who have vaccine exemptions, and those rates are increasing too — in Haskell County from 11% in 2019 to over 25% in 2023 and in Gray County jumping from about 2% to 11%.

In Barton County, where kindergarten immunization rates dropped by nearly 7 percentage points from 2019 to 2023, Karen Winkelman, a registered nurse and director of the Barton County Health Department said she is receiving numerous questions from parents about vaccine safety. She said her team made the decision to be proactive once they heard that measles cases were reappearing nationwide.

Winkelman stresses having productive, positive conversations.

“We need to take a positive approach on this and hold down that hysteria,” she said. “We know this disease. We know the vaccine. We have something available for protection.”

It isn’t like the COVID-19 pandemic, she said, where the vaccine information changed frequently. They are disseminating information carefully, using only reliable sources, such as the Centers for Disease Control and Prevention, KDHE, the American Academy of Family Physicians and others.

“We are going with factual information. The more we can educate and provide the factual, the better it is,” Winkelman said. “We’re never going to be able to control on social media or in normal conversations what is being said. We just have to really focus on those organizations that are reliable and accurate.”

The Barton County Health Department is holding an immunization clinic from 10 a.m. to noon Saturday, outside of their regular business hours, to make sure staff is available to answer questions and offer vaccinations, Winkelman said.

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