An infection with parasites spread by sand flies was found in Texas. It causes skin lesions and disfigurement if not treated.
A tropical disease once seen almost exclusively in returning travelers is now being detected in Texas and the south in people with no international travel history — caused by a parasite strain that’s different from the imported cases, new evidence suggests.
This is evidence of local transmission — that leishmaniasis may be well-established in some parts of the United States, said Dr. Mary Kamb with the Division of Parasitic Diseases and Malaria at the CDC’s National Center for Emerging and Zoonotic Infections, in a news release. The increasing number of cases could be caused by a number of factors, including changes in climate conditions that may lead to suitable environments for sand fly survival and reproduction, enabling the transmission of leishmaniasis in new areas, said Vitaliano Cama, a senior advisor with CDC’s Division of Parasitic Diseases and Malaria. By linking domestic infections with a distinct strain, it may be easier to detect the emergence of locally acquired cases in new areas, the CDC team says.
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