Travel company Tui has launched an investigation into complaints by a number of passengers that COVID-19 mask rules weren't followed on a flight from the Greek island of Zante to Cardiff.

Around 200 people were told to self-isolate after 16 coronavirus cases were linked to passengers on the flight.

Some have called for people to be tested at airports in response to concerns over how long it has taken health officials to contact passengers who were on the flight.

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