Maps and charts show record number of measles cases in U.S. this year
CBS News has been tracking a record number of measles cases and outbreaks around the country in 2026. The majority of cases are among those who haven't been vaccinated.
Watch CBS News
CBS News has been tracking a record number of measles cases and outbreaks around the country in 2026. The majority of cases are among those who haven't been vaccinated.
The CDPH said an unvaccinated passenger who later was hospitalized with measles traveled around the country by train and bus, eventually moving through at least six California counties before heading to Denver, Colorado.
U.S. kindergarten vaccination rates have declined again, with exemptions reaching a record high for the 2025-2026 school year
President Trump signed an executive order on childhood vaccine schedules Monday.
Health officials in the San Francisco Bay Area issued a warning about a potential measles exposure after an infected resident traveled through San Francisco International Airport and local businesses.
Health officials in San Francisco announced Wednesday that an infant who recently traveled outside the United States has tested positive for measles.
A Santa Clara County resident with measles may have exposed others while dining at a restaurant in Burlingame earlier this week, health officials said.
Public health officials say they've identified a total of eight measles cases in Shasta County as contact tracing continues.
Health officials in Napa County confirmed Wednesday that a child has been diagnosed with measles in the county's first case in nearly 15 years.
CBS News has been tracking a record number of measles cases around the country after an outbreak in West Texas that led to the deaths of two children.
Health officials in the East Bay announced Monday that a person who visited several stores in the Walnut Creek area ahead of Christmas has tested positive for measles.
Vaccination coverage among kindergartners decreased for all reported vaccines during the 2024 to 2025 school year, data posted to the CDC website showed.
The number of measles cases in the United States has surpassed 2019's wave of infections, according to Centers for Disease Control and Prevention data.
Of the 2,066 counties the study looked at, 78% saw a decline in MMR vaccination rates. But rates can vary substantially within a state.
Health officials in two Bay Area counties warned about a potential exposure to measles involving a resident who tested positive for the virus after traveling.
Santa Clara County acting health officer Dr. Sarah Rudman and Dr. Kavita Trivedi of the Alameda County Public Health Department held a briefing Friday, warning residents about a potential measles exposure.
The CDC has received at least 62 reports of measles cases this year that were infectious during air travel.
The CDC is now backing an additional measles vaccine shot for some travelers within the United States in response to record outbreaks.
Health and Human Services Secretary Robert F. Kennedy Jr. addressed health program cuts and the measles vaccine in his first network TV interview since joining the Trump administration.
Tuolumne County Public Health officials on Tuesday warned about possible measles exposure at a high school and an emergency room.
The health departments from all Bay Area counties urged people to get vaccinated against measles because of rising cases across the country.
Most cases have been from an outbreak in Texas and New Mexico, the CDC says.
Local officials in Samoa don't blame Robert F. Kennedy Jr., Trump's HHS pick, for measles deaths, but critics call his actions "harmful."
Thanks to vaccinations, measles was declared eliminated in the U.S. in 2000. But measles cases are now back; one reason is that more families have exempted their children from routine immunizations than ever before.
Federal health officials have a message for parents about protecting kids against measles.
