At least 113 measles cases have been reported in 17 states so far this year, the U.S. Centers for Disease Control and Prevention said.

A new CDC report published Thursday found that the U.S.'s measles elimination status is being threatened due to the most recent outbreak this year.

Two more cases of measles have been reported in Chicago, while Indiana health officials are investigating a possible "mass exposure" of the virus at a local church.

There have been 58 reported cases across 17 states and the agency is urging those who travel overseas to get vaccinated before their trips.

Plus, St. Patrick's Day festivities start a day early.

There have been at least 58 measles cases across 17 states so far in 2024, already matching the number of cases in the U.S. in 2023.

Measles was declared eliminated in the U.S. in 2000 but outbreaks keep popping up across the U.S. Experts explain to ABC News why this keeps happening.

ABC News’ Stephanie Ramos reports on what’s behind the increase in measles cases in the United States.

A CDC team is being deployed to Chicago to help health officials respond to the city's first measles cases since 2019, the city health department told ABC News.

The Centers for Disease Control and Prevention will be helping with the response, according to city officials.

Chicago health officials reported the city's first cases of measles since 2019, one in a city resident and the other in a child at a new arrivals shelter.

ABC News medical contributor Dr. Alok Patel on why the disease is on the rise and how you can protect yourself and your children.

The seventh case of measles linked to an outbreak at Manatee Bay Elementary School in Florida was confirmed by officials on Tuesday.

"GMA" looks at the growing concern over the increasing number of reported measles cases in South Florida where at least six children at one elementary school have been infected.

The measles outbreak continues to grow in Florida schools, as state officials defy Centers for Disease Control and Prevention guidance.

ABC News chief medical correspondent Dr. Jen Ashton talks about an uptick of measles, a highly contagious virus, in a Florida elementary school.

National MMR coverage has dropped 2% from the 2019-2021 school year to the 2022-2023 school year,

A sixth case of measles linked to an outbreak at an elementary school in Weston, Florida, has been confirmed by officials.

Doctors say vaccination levels could leave more children vulnerable. ABC News’ Alison Kosik reports

Measles was eliminated in 2000, so many new doctors may not have the experience to know what it looks like when an outbreak occurs.

Measles was once considered eliminated in the U.S. Now, doctors are having to learn how to rapidly detect and diagnose a disease they have never had to treat before.

ABC News’ Dr. Jennifer Ashton discusses the recent measles outbreaks in the U.S. and shares what symptoms to look out for and the best ways to protect loved ones.

Two decades after measles was considered eliminated, outbreaks are occurring in some pockets of the U.S. Here's why doctors are concerned.

A doctors' group is offering free measles vaccines for unvaccinated residents in Philadelphia to fight an outbreak that has infected eight people so far.

The national vaccination rate for kindergarten-aged children dropped from 95% in 2019-2020 to 93% in the 2022-23 school year.

Health officials said an infected person passed through Dulles and Reagan airports this month.

The Philadelphia Department of Health said it's tracking a measles outbreak in the city, with eight confirmed cases as of Monday.

Domestic measles cases surged in 2019, with an estimated 1,274 people sick in at least 31 states -- the greatest number of cases reported since 1992, the CDC says.

The CDC issued a Health Alert this week, warning Americans about rising measles cases linked to international travel.

American Samoa declared a public health emergency in response to a measles outbreak that's led to 32 confirmed and probable cases, all in children 13 years old and under.

The measles outbreak that infected 85 children in central Ohio has been declared over, according to health officials. Nearly all the cases were among unvaccinated kids.

The spread is concerning as children seem to be impacted most.

The central Ohio health system is fighting measles in addition to RSV.

Heath officials have reported a growing measles outbreak in central Ohio, with at least 63 children being treated and more than two dozen hospitalized.

At least 50 children, from infants to teens and all unvaccinated, have come down with the virus with 20 of them hospitalized.

A new report from the CDC and the WHO says measles is an "imminent threat" globally after nearly 40 million children missed at least one dose of the vaccine in 2021.

Public health experts tell ABC News what people need to know about measles after an outbreak of the virus in Ohio sickened 19 children.

A "perfect storm" of circumstances brewing for largescale measles outbreaks affecting children, WHO and UNICEF warn, as worldwide cases rise

More than 22 million infants throughout the world didn't get their first measles vaccine dose last year.

Society bears the brunt of costs from anti-vax movement, study finds.

A student at Northeastern University in Boston was diagnosed with measles Jan. 8.

Nearly 800 Seattle students will be kept out of school on Wednesday, their first day back after winter break, because they aren't vaccinated against measles.

Nearly 800 Seattle students will be kept out of school today, their first day back after winter break, because they aren't vaccinated against measles.

The school district issued notices, saying children would not be allowed to attend class if they did not get the necessary shots.

The government of Samoa ended the state of emergency it had declared in response to its measles outbreak that swept the small island nation of fewer than 200,000 people.

A measles outbreak has prompted officials of the Seattle Public Schools to take the drastic action of ordering thousands of students to get vaccinated immediately.

More than 2,200 students were sent letters to get vaccinated.

They said an unknown number of people who had recently traveled through at least five busy U.S. airports may have been exposed to the contagious disease.

Los Angeles, Chicago, Denver, Austin and Richmond have all reported confirmed cases of passengers with the measles this month.

Officials at airports in Austin, Denver and Los Angeles confirmed that travelers with the measles had also exposed an unknown number of fliers to the disease this month.