Cases of Legionellosis in Vermont, USA

In the United States, the Vermont Department of Health is investigating a group of patients who are positive for Legionnaires’ disease. A total of five patients living in Franklin or Grand Isle counties tested positive for Legionnaires’ disease in August. [2022]All five patients spent their incubation period in Franklin County, although health officials say there is no known common source of exposure among the five patients.

reminder about Legionellosis :

Legionnaires’ disease (or legionnaires’ disease) is a disease of varying severity, ranging from mild febrile attacks to sometimes fatal pneumonia.It is due to exposure to seeds legionella.
After an incubation period of 2-10 days, Legionellosis is manifested by acute pulmonary infections such as pneumonia. The first symptoms are flu-like (fever, dry cough) followed by an increasing fever, which can reach 39.5°C. Patients then experience anxiety and abdominal pain (nausea, vomiting, diarrhea), accompanied by psychiatric disturbances (confusion, disorientation, hallucinations leading to delirium and coma).

The disease can progress with two complications, irreversible respiratory failure and acute renal failure, which are often fatal.
of legionella However, it proliferates mainly in the most vulnerable individuals, such as immunocompromised and vulnerable individuals (those undergoing surgery, the elderly, infants).

all over the world, Legionella pneumophila Waterborne infections are the most common cause of infections and outbreaks. This and related species are common in lakes, rivers, streams, hot springs, and other bodies of water. Other species, such as Legionella longbeachae, can be found in potting soil. This bacterium survives and grows in water systems at 20-50°C (optimum temperature 35°C).

the most common infection route for legionella By inhalation of contaminated aerosols. Aerosol sources associated with this propagation are cooling towers in air conditioning systems, hot and cold water systems, air humidifiers, and hot tubs.

For travelers, there are limited individual precautions we can offer travelers if they have not been vaccinated.

Before you travel, check alerts issued by many travel health sites (including the site) to see if your destination has reported any recent outbreaks. There is an infection monitoring system in Europe. Accommodations with reported infections have been published online and can be viewed on government websites.European Center for Disease Prevention and Control.

During your stay:

  • have risk factors (age over 50, smoker or former smoker, excessive alcohol consumption, chronic heart, lung, kidney or liver disease, cancer, diabetes, immune system weakened by medication or disease), People who refrain from going out are at higher risk of infection. Poorly maintained accommodation. Recreational water use (spas, jacuzzis, etc.) should be evaluated in those at high risk.
  • In hotels and other accommodations that have not been used recently, it may be helpful to rinse the shower with hot water before entering the shower. Place the showerhead on the ground (or the bottom of the tub) to avoid aerosol exposure, then open the hot water faucet (the highest temperature is chosen for mixed water) and avoid excessive flow.

If you develop a flu-like illness with fever, cough, or shortness of breath during your stay or within two weeks of returning to Japan, seek medical attention immediately. You should tell your health care professional that you may have had Legionnaires’ disease and mention the areas you have visited.

Source: Promed

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