CDC identifies possibly deadly bacterium for the first time in US


The Centers for Disease Control and Prevention has issued a warning over a bacterium found in the United States for the first time.

The bacterium identified by the CDC, Burkholderia pseudomallei, or B. pseudomallei, causes a rare and serious disease called melioidosis, and was found in the Gulf Coast region of southern Mississippi from two human melioidosis cases. The patients, diagnosed with the disease in July 2020 and May 2022, were unrelated to each other but lived close by and had no recent travel outside the U.S., according to the CDC.

“Both patients were hospitalized with sepsis due to pneumonia and had known risk factors for melioidosis,” the CDC wrote. “Blood cultures were positive for B. pseudomallei, and both patients recovered following appropriate antibiotic therapy.”

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Tropical Disease
This photo provided by the U.S. Centers for Disease Control and Prevention depicts a petri plate containing multiple colonies of Gram-negative Burkholderia pseudomallei bacteria. The bacteria can cause melioidosis, a rare and sometimes deadly disease long thought to be confined to tropical climates. The bacteria been found in soil and water in the continental United States, U.S. health officials said Wednesday, July 27, 2022. (Dr. Todd Parker, Audra Marsh/CDC via AP)


Melioidosis symptoms, such as fever, chest pain, weight loss, and abdominal discomfort, are nonspecific and vary depending on the type and site of infection. Globally, about 10%-50% of melioidosis cases result in death.

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Despite the discovery of the bacterium, the CDC advises that most healthy people who come into contact with B. pseudomallei in areas where the disease is regularly found, such as Thailand and northern Australia, never develop melioidosis. However, people who live in or are visiting the Gulf Coast of Mississippi are advised to avoid contact with soil or muddy water and to cover any open wounds, cuts, or burns with waterproof bandages.

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