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FOUR have died after contracting Legionnaires' disease during a major outbreak in Milan, in north Italy.
Local health chiefs are scrambling to find the source of the infection, which is believed to be coming from the water supply reaching people's houses.
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The lung infection can be caused by inhaling droplets of water from things like air conditioning or hot tubs.
Most people exposed to Legionella bacteria do not develop symptoms.
But as many as 15 per cent of those who do become ill suffer from severe disease, which can lead to life-threatening pneumonia.
At least 53 cases of the disease have been recorded in the Lombardy region, according to figures from the local health authority, which says the numbers are correct as of August 19.
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All infections have come from Corsico and Buccinasco, neighbouring areas in the southwest of Milan.
The outbreak began in April when the first case started reporting symptoms.
Since then, 12 people have been hospitalised and four have died.
The dead were "patients over 70 years of age, affected by comorbidities", the health officials said, which put them at higher risk of serious illness.
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Samples taken of the bug suggest all cases have come from one source, according to local media reports.
Italian authorities are conducting widespread tests around the city to check all likely sources of this outbreak.
Oropouche virus
The most common form of transmission is inhalation of infected water sprays, jets or mists from contaminated water sources, according to the World Health Organisation (WHO).
Legionella bacteria can sit in showers and taps that haven't been used for a few days, which is why some experts urge holidaymakers to run taps and showers before using them.
Each year around 300 to 500 cases of Legionnaires' disease are reported in Britain, with many contracted abroad.
Around one in ten cases proves fatal.
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How to stay safe from Legionnaires' disease on holiday
Heading off on a holiday? Here’s how to dodge Legionnaires' disease with some handy advice from the NHS:
- Pick accommodation with good reviews on cleanliness, especially for water facilities like pools and hot tubs. It’s worth checking if they follow strict water maintenance practices.
- When you first arrive, run the hot water in your shower for a few minutes to flush out any stagnant water where bacteria might be hiding.
- Sticking to bottled water, especially in places where the water quality is questionable. And if you’re not sure about the ice, better to skip it!
- If you start feeling unwell with symptoms like a cough, fever, or shortness of breath after using hotel facilities, don’t ignore it. Seek medical help quickly.
- Don’t hesitate to ask your hotel about their water system maintenance. A little peace of mind goes a long way in keeping your holiday stress-free!
What are the symptoms of Legionnaire's disease?
These are the symptoms of Legionnaires' disease you should watch out for:
- A cough
- Difficulty breathing
- Chest pain
- A high temperature
- Flu-like symptoms
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You might need to go to the hospital if you're diagnosed with the bug.
You should call NHS 111 if you can't breathe properly, have chest pain or feel like you have severe flu.