(NEXSTAR) – Passengers aboard a United Airlines flight from Vancouver to Houston reported feeling ill upon arrival Friday afternoon, prompting the airline to take the plane out of service for a “deep cleaning,” a United spokesperson confirmed.

A total of 25 passengers were sickened, Martee Black, a spokesperson for the Houston Fire Department, told Nexstar. Three were treated on the scene at George Bush Intercontinental airport, according to the Houston Airport System; the rest elected to continue on their journey or head home.

“Public health officers from CDC’s Houston Port Health Station worked with EMS to evaluate ill........

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