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California warns of measles exposure in six counties from unvaccinated train passenger

2 verified updates • corroborated by 2 independent sources • tracked since September 19, 2026

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  01:01 AM 1 source: KCRA

  California officials warn of possible measles exposure in 6 counties due to infected Amtrak rider
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  02:01 PM 1 source: The Guardian

  California warns of measles exposure in six counties from unvaccinated train passenger