Health experts say the likelihood of infection rises when sea temperatures exceed 20°C, particularly during extended periods of hot summer weather.
As coastal waters continue to warm, cases of bacterial infections could become more common.
Although these infections remain rare, they can be serious in some cases.
Warm water encourages bacterial growth
The bacteria thrive in warm coastal waters with relatively low salinity and are most active during the summer months, especially in July and August.
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Health data show that infections occur most frequently among adults aged 65 to 79, although people of any age can be affected.
Who is most at risk?
People with open cuts, wounds, or weakened immune systems are at greater risk because the bacteria can enter the body through damaged skin.
Most infections affect the skin and soft tissue around a wound.
In rare cases, however, the bacteria can spread into the bloodstream, leading to a severe and potentially life-threatening illness.
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Health authorities advise anyone who develops a fever, increasing pain, swelling, or severe redness around a wound after swimming in the sea to seek medical attention promptly.
People in higher-risk groups should consider avoiding swimming when sea temperatures rise above 20°C.
If they do enter the water, any cuts or wounds should be properly covered and cleaned thoroughly afterward.
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This article is made and published by Ida-Marie Palm Varbæk, who may have used AI in the preparation.