Measles cases reported in 9 US states: see map, symptoms
As cold and flu season continues, multiple states across the United States are now reporting cases of measles, a highly contagious virus that primarily affects children.
This preventable disease was once common, but has been eradicated in the United States thanks to the widespread use of vaccines, with most current cases originating outside the country and occurring among unvaccinated people.
The Centers for Disease Control and Prevention (CDC) issued an emergency warning on January 25, asking the public to remain vigilant after 23 cases were confirmed in several different states between December 1, 2023, and January 23, 2024. The number of cases remains low, but reports of New infections have continued to emerge in states across the United States, with some linked directly to international travelers.
See the map below for more information on where measles cases have been confirmed.
Measles cases by state
Unable to view our graphics? Click here to see it.
CDC data on current measles cases is updated monthly. In a January 25 update, jurisdictions in Georgia, Missouri, New Jersey and Pennsylvania reported a total of 9 confirmed cases.
However, several state health departments have also shared information about cases, although some states have reported only one confirmed case at this time.
Here’s what those countries reported:
CDC warning:The Centers for Disease Control and Prevention is alerting to a rise in measles cases and urging health care providers to monitor the disease
Reported measles cases by year
The last major measles outbreak in the United States occurred in 2019, when a total of 1,249 measles cases and 22 measles outbreaks were reported in the United States between January 1 and October 1. According to the CDC, this was the second measles outbreak. The largest number of reported outbreaks since measles was declared eliminated in the United States in 2000 and the highest in a single year since 1992.
Many of these cases came from an outbreak in New York City. Of the cases, 1,107, or 89%, were patients who had not received the vaccination or whose vaccination status was unknown. Children receive the MMR vaccine as part of the regular course between the ages of 12 and 15 months for the first dose and from 4 to 6 years for the second dose. The vaccine protects against measles, mumps and rubella, and is 97% effective in preventing measles when both doses are given.
what do you know:Are you at risk of measles amid outbreak in pockets of US?
Philadelphia outbreak:Officials respond to a measles outbreak from a day care
According to the CDC, measles symptoms appear 7 to 14 days after contact with the virus, and usually include a high temperature, cough, runny nose, and watery eyes. The measles rash appears 3 to 5 days after the first symptoms appear.
Other signs and symptoms of measles include:
- High temperature
- Runny nose and sneezing
- Red and watery eyes
- Loss of appetite and diarrhea
- A reddish-brown rash that can spread throughout the body
- Koplik’s spots, which are small white spots that may appear inside the mouth two to three days after symptoms start
- Small, raised bumps may also appear on top of the flat red spots (the spots may join together as they spread from the head to the rest of the body)
- When the rash appears, a person’s fever may rise to more than 104 degrees Fahrenheit