The US has nearly 900 measles cases, and 10 states have active
outbreaks. Here's what to know
[April 26, 2025]
By DEVI SHASTRI
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.
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 an
outbreak in the western part of the state that's 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.
Other states with active outbreaks — defined as three or more cases —
include Indiana, Kansas, Michigan, Montana, New Mexico, Oklahoma, Ohio,
Pennsylvania and Tennessee.
North America has two other ongoing outbreaks. One 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 has said 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 has been considered eliminated from
the U.S. since 2000.
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 are there 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.” A 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 are there 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 are there 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 are there 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 are there 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.
They 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 are there 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.
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A no-contact thermometer, stethoscope and a calendar are seen at the
Andrews County Health Department measles clinic, Tuesday, April 8,
2025, in Andrews, Texas. (AP Photo/Annie Rice)
 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 are there 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 are there 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 are there 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 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.
What do you need to know about the MMR vaccine?
The best way to avoid measles is to get the measles, mumps and
rubella vaccine. 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.
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.
Most kids will recover from measles, but infection can lead to
dangerous complications such as pneumonia, blindness, brain swelling
and death.
How can you treat measles?
There’s no specific treatment for measles, so doctors generally try
to alleviate symptoms, prevent complications and keep patients
comfortable.
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AP Science Writer Laura Ungar contributed to this report.
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