Measles Outbreak Linked to Train Travel Raises Concerns in Missouri

WHO:

KSDK.com - Three individuals have been confirmed with measles in connection to a train that traveled through St. Louis County.

The Guardian - The CDC is involved in monitoring the measles outbreak.

WHAT:

FOX 2 - A total of six confirmed measles cases have now been reported in connection to the train travel through St. Louis County.

FOX 2 - A total of five confirmed measles cases have now been reported in connection to the train travel through St. Louis County.

KSDK.com - The CDC has reported a total of four confirmed measles cases linked to the train travel through St. Louis County.

KSDK.com - A third case of measles has been reported linked to the train travel.

The Guardian - The measles outbreak is described as "accelerating" in Pennsylvania.

WHERE:

KSDK.com - The measles cases are connected to a train that traveled through St. Louis County, Missouri.

The Guardian - The outbreak is also affecting Pennsylvania.

WHEN:

The Guardian - The CDC is excluding measles deaths in Pennsylvania as the outbreak appears to be escalating.

WHY:

The Guardian - The CDC is facing criticism for its decision to exclude certain measles deaths from its reporting, which some health experts argue could misrepresent the severity of the outbreak.

The Guardian - The CDC's decision to exclude certain measles deaths is under scrutiny amid the outbreak.

HOW:

KSDK.com - The measles cases are linked to travel on a specific train route.

(UPDATED September 23, 2026 22:58 UTC)

A total of six confirmed measles cases have been reported in connection with train travel through St. Louis County. Health officials are urging anyone who may have been exposed to monitor for symptoms and seek medical advice if necessary. This outbreak highlights the importance of vaccination and awareness, especially in public transportation settings.

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(UPDATED September 23, 2026 13:04 UTC)

A total of five confirmed measles cases have been reported in connection with train travel through St. Louis County. Health officials are urging anyone who may have been on those trains to monitor for symptoms and seek medical advice if necessary. The situation is being closely monitored as authorities work to contain the spread of the virus.

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(UPDATED September 23, 2026 03:58 UTC)

The CDC has confirmed four cases of measles linked to train travel through St. Louis County. This comes amid criticism of the agency for excluding certain measles deaths from its reporting, with health experts suggesting that this could misrepresent the severity of the outbreak. The situation continues to develop as public health officials work to address these concerns.

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(UPDATED September 23, 2026 01:22 UTC)

Three individuals have been confirmed with measles in connection to a train that traveled through St. Louis County, Missouri, and the outbreak is described as "accelerating" in Pennsylvania. The CDC is actively monitoring the situation and has decided to exclude certain measles deaths in Pennsylvania, a decision that is now under scrutiny. As the outbreak continues to unfold, health officials are emphasizing the importance of awareness and prevention, especially for those who may have traveled on that specific train route.