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Following her diagnosis, the Greek health ministry issued a statement to hoteliers in Crete to "raise awareness among all those involved in monitoring the quality of water for human consumption especially with regard to Legionella".

Legionnaires' disease is a lung infection most commonly contracted through the inhalation of water droplets containing Legionella bacteria.

The opening of a new £41m Sussex health centre has been delayed after inspectors found legionella bacterium in the heating system.

That followed problems, including traces of Legionella bacteria being found in the vessel’s on-board water system, days after the first asylum seekers boarded in August 2023.

As well as site security, Mr Lewis is responsible for "alarm testing, the sprinkler pump testing, the legionella testing and day-to-day maintenance of the school".