(CNN) — Concerns about even remote chances of Ebola exposure rippled from a U.S. airline to a ship off Belize on Friday, with Frontier Airlines trying to contact hundreds more passengers of a plane linked to an infected nurse, and a cruise liner quarantining a health worker only tangentially linked to the care of a different Dallas Ebola patient.
The airline’s move relates to Amber Vinson, a Dallas nurse who treated an Ebola patient and then was diagnosed with the virus herself this week after taking a round trip between Dallas and Cleveland. On Thursday, a Centers for Disease Control and Prevention official said she could have had symptoms earlier than believed — a time period possibly covering her two flights on Frontier Airlines.
Frontier now says it is notifying up to 800 passengers total, a figure that includes those on her October 10 Dallas-to-Cleveland flight, the return flight on Monday, plus five other trips taken by the plane before the airline took it out of service. Frontier says it’s telling those passengers to contact the CDC — which had said the risk to anyone on the return flight was extremely low — if they have any concerns.