Health officials say the measles incident in Washington, DC, on an Amtrak train

Those with confirmed measles infection may have exposed Amtrak passengers on a train to Washington, D.C. earlier this month. DC Ministry of Health I said.

Health officials said Monday in a statement that the agency “confirmed cases of measles have been confirmed in people who visited multiple locations in DC while it was contagious.” Others in the same place — Amtrak trains, DC stations, emergency care centres — could have been potentially exposed at the time.

Measles patients arrived at Union Station, the city's main station, on March 19, on the southbound 175 Amtrak Northeast Region train, between 7:30pm and 1:30am. The Health Bureau said. A spokesman for the Health Department did not share where individuals boarded the train, but Amtrak Transit schedule Viewing routes started in Boston, arriving in New York City before 7:30pm, stopped in many other cities along the East Coast, including Philadelphia, Wilmington and Baltimore before arriving in DC.

Officials said the infected person visited Medstar Emergency Care in the Adams Morgan area of ​​DC between 7pm and 11pm on March 22.. Healthcare providers must report all suspected cases of measles to the DC Health Department.

Individuals who may be exposed to any of these locations are encouraged to call 844-493-2652 to contact the provider or DC health authorities, but authorities have pointed out that those vaccinated against measles are likely to be in protection.

Before it became contagious, individuals with measles had flew from Minnesota to Reagan National Airport, a DC Health Department spokesman told CBS News. Neither the individual's identity nor explanation has been released, but the spokesman said he was vaccinated from measles.

This case comes inside Notable spikes in measles infection In the United States, the most measles cases have already been recorded in the year since its inception in 2025 and since 2019, according to the Centers for Disease Control and Prevention. Most of these infections resulted from a The outbreak of Texas It has resulted in over 300 people getting sick since late January, and as a result Death of one child. Measles adults He died in New Mexico.

Considered one of the most infectious infectious diseases, measles can in some cases cause severe infections that lead to cognitive problems, hearing loss, and even death. The CDC warns that about one of the 1,000 children with measles can cause brain swelling, leading to brain damage, and three of the 1,000 children with measles will die of illness.

Usually, measles – vaccines for diseases administered as part of a mampsulvera or MMR shot are Very effective and safeCDC reports that two doses are about 97% effective in preventing measles, and a single dose is about 93% effective. For example, the Texas outbreak occurs in communities with very low vaccination rates, and Texas health officials said children who died in the outbreak were not vaccinated.

The US has confirmed at least 377 measles cases so far this year as of the latest CDC update on Friday, March 21st. There have been cases in at least 16 states, including Texas, California, Florida, Georgia, New Mexico and New York. The CBS News Data Team has confirmed measles cases nationwide as the state's health department and CDC continue to release data (the map below will be updated with new data from the CDC on Friday).

Measles symptoms usually appear 7-14 days after exposure to the virus, According to the CDC.

Symptoms Can include high fever, cough, runny nose, red and watery eyes, and rashes.

When an infected person coughs, the virus spreads into the air and sneezes Or discuss. The virus can also shrink the virus by entering a room where an infected person was in the past. This, the CDC says, can remain in the air for up to two hours after the virus leaves.

I contributed to this report.