With one-fifth of states seeing active measles outbreaks, the U.S. is nearing 900 cases, according to figures posted Friday by the U.S. Centers for Disease Control and Prevention (CDC).
As the Associated Press (AP News) reports, the CDC’s confirmed measles cases count is 884, triple the amount seen in all of 2024. The vast majority — 646 — are in Texas, where the outbreak in the western part of the state is approaching the three-month mark. Two unvaccinated elementary school-aged children died from measles-related illnesses in the epicenter in West Texas, and an adult in New Mexico who was not vaccinated died of a measles-related illness.
The other nine states with active outbreaks — defined as three or more cases — include Indiana, Kansas, Michigan, Montana, New Mexico, Oklahoma, Ohio, Pennsylvania and Tennessee.
But this measles contagion hasn’t stopped at our borders. A measles outbreak in Ontario, Canada, has resulted in 1,020 cases from mid-October through Wednesday. And as of Friday, the Mexican state of Chihuahua state had 605 measles cases, according to data from the state health ministry. The World Health Organization (WHO) has stated that the cases in Mexico are linked to the Texas outbreak.
Measles is caused by a highly contagious virus that’s airborne and spreads easily when an infected person breathes, sneezes or coughs. It is preventable through vaccines, and was considered eliminated from the U.S. since 2000, until a rise in vaccination hesitancy has ushered in the current rise in cases.
As the virus takes hold in other U.S. communities with low vaccination rates, health experts fear the virus that the spread could stretch on for a year. Here’s what else you need to know about measles in the U.S.
How many measles cases and where are they reported in Texas and New Mexico?
Texas state health officials said Friday there were 22 new cases of measles since Tuesday, bringing the total to 646 across 26 counties — most of them in West Texas. Hospitalizations were steady Friday at 64 throughout the outbreak. State health officials estimated about 1% of cases — fewer than 10 — are actively infectious.
Sixty-one percent of Texas’ cases are in Gaines County, population 22,892, where the virus started spreading in a close-knit, undervaccinated Mennonite community. The county has had 393 cases since late January — just over 1.5% of the county’s residents.
The April 3 death in Texas was an 8-year-old child, according to Health Secretary Robert F. Kennedy Jr. Health officials in Texas said the child did not have underlying health conditions and died of “what the child’s doctor described as measles pulmonary failure.” An unvaccinated child with no underlying conditions died of measles in Texas in late February — Kennedy said age 6.
New Mexico announced one new case Friday, bringing the state’s total to 66. Seven people have been hospitalized since the outbreak started. Most of the state’s cases are in Lea County. Three are in Eddy County and Chaves and Doña Ana counties have one each. State health officials say the cases are linked to Texas’ outbreak based on genetic testing. New Mexico reported a measles-related death in an adult on March 6.
How many cases and where are they reported in Indiana?
Indiana confirmed two more cases Monday in an outbreak that has sickened eight in Allen County in the northeast part of the state — five are unvaccinated minors and three are adults whose vaccination status is unknown. The cases have no known link to other outbreaks, the Allen County Department of Health said Monday.
How many cases and where are they reported in Kansas?
Kansas was steady this week with 37 cases in eight counties in the southwest part of the state. Finney, Ford, Grant, Gray and Morton counties have fewer than five cases each. Haskell County has the most with eight cases, Stevens County has seven, Kiowa County has six. The state’s first reported case, identified in Stevens County on March 13, is linked to the Texas outbreak based on genetic testing.
How many cases and where are they reported in Michigan?
Montcalm County, near Grand Rapids in western Michigan, has four linked measles cases. State health officials say the cases are tied to Canada’s large outbreak in Ontario. The state has nine confirmed measles cases as of Friday, but the remaining four are not part of the Montcalm County outbreak.
How many cases and where are they reported in Montana?
Montana state health officials announced five cases Thursday in unvaccinated children and adults who had traveled out of state, and confirmed it was an outbreak on Monday. All five are isolating at home in Gallatin County in the southwest part of the state. These are Montana’s first measles cases in 35 years. Health officials didn’t say whether the cases are linked to other outbreaks in North America.
How many cases and where are they reported in Ohio?
The Ohio Department of Health confirmed 32 measles cases in the state Thursday, and one hospitalization. The state count includes only Ohio residents. There are 16 cases in Ashtabula County near Cleveland, 14 in Knox County and one each in Allen and Holmes counties.
Health officials in Knox County, in east-central Ohio, said there are a total of 20 people with measles, but seven of them do not live in the state.
How many cases and where are they reported in Oklahoma?
Oklahoma was steady Friday with 13 cases: 10 confirmed and three probable. The first two probable cases were “associated” with the West Texas and New Mexico outbreaks, the state health department said. The state health department is not releasing which counties have cases, but Cleveland, Custer and Oklahoma counties have had public exposures in the past couple of months.
How many cases and where are they reported in Pennsylvania?
There are eight measles cases in Erie County in far northwest Pennsylvania, officials said Friday. The county declared an outbreak in mid-April. The state said Friday it has 13 cases overall in 2025, including international travel-related cases in Montgomery County and one in Philadelphia.
How many cases and where are they reported in Tennessee?
Tennessee has six measles cases as of Thursday. Health department spokesman Bill Christian said all cases are the middle part of the state, and that “at least three of these cases are linked to each other” but declined to specify further. The state also did not say whether the cases were linked to other outbreaks or when Tennessee’s outbreak started.
The state health department announced the state’s first measles case March 21, three more on April 1 and the last two on April 17, but none of the news releases declared an outbreak. Tennessee is on a list of outbreak states in a Thursday CDC report.
Where else is measles showing up in the U.S.?
There have been 884 cases in 2025 as of Friday, according to the CDC. Measles cases also have been reported in 18 other states, including Alaska, Arkansas, California, Colorado, Florida, Georgia, Hawaii, Illinois, Kentucky, Louisiana, Maryland, Minnesota, New Jersey, New York, Rhode Island, Vermont, Virginia and Washington.
Cases and outbreaks in the U.S. are frequently traced to someone who caught the disease abroad. In 2019, the U.S. saw 1,274 cases and almost lost its status of having eliminated measles. With the country at almost 900 in the first quarter of the year alone, America is on track to lose that status this year.
How Can You Avoid Getting the Measles?
The best way to avoid measles is to get the measles, mumps and rubella vaccine. Their are two shots needed to be fully vaccinated against the disease. The first shot is recommended for children between 12 and 15 months old and the second between 4 and 6 years old.
Getting another MMR shot is harmless if there are concerns about waning immunity, the CDC says. People who have documentation of receiving a live measles vaccine in the 1960s don’t need to be revaccinated, but people who were immunized before 1968 with an ineffective measles vaccine made from “killed” virus should be revaccinated with at least one dose, the agency said.
What About Presumptive or Herd Immunity?
People who have documentation that they had measles are immune and those born before 1957 generally don’t need the shots because most children back then had measles and now have “presumptive immunity.” In communities with high vaccination rates — above 95% — diseases like measles have a harder time spreading through communities. This is called “herd immunity.”
But childhood vaccination rates have declined nationwide since the pandemic and more parents are claiming religious or personal conscience waivers to exempt their kids from required shots. The U.S. saw a rise in measles cases in 2024, including an outbreak in Chicago that sickened more than 60.
What are the Symptoms of Measles?
Measles first infects the respiratory tract, then spreads throughout the body, causing a high fever, runny nose, cough, red, watery eyes and a rash.
The rash generally appears three to five days after the first symptoms, beginning as flat red spots on the face and then spreading downward to the neck, trunk, arms, legs and feet. When the rash appears, the fever may spike over 104 degrees Fahrenheit, according to the CDC.
While most kids will recover from measles, infection can lead to dangerous complications such as pneumonia, blindness, brain swelling and death.
Is There a Measles Treatment?
There’s no specific treatment for measles. Once someone has contracted the disease, all doctors can do is to generally try to alleviate symptoms, prevent complications and keep patients comfortable.
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