![]() ![]() ![]() It is still unknown what pressures caused the CCC strain to evolve or whether it can spread between sand flies and humans more easily than other strains, Cama said. "These findings offer evidence that leishmaniasis may be endemic in the United States," the authors wrote in their abstract. The first appeared dramatically more prevalent in travelers, while the latter was much more common in nontravelers, especially those in Texas. The team detected two distinct strains of L. mexicana was the most common species found among nontravelers, with more than 60% testing positive for it. ![]() mexicana, of which 52 cases, or 32%, occurred in Texas. Leishmania parasites were identified in 1,222 of the more than 2,000 tissue samples more than 1,100 of the samples were from people who had traveled internationally, while 86 were from nontravelers. The new analysis therefore acted almost as a proxy for surveillance, allowing researchers to get a sense of how often the disease occurs, Cama said. That's because, while cutaneous leishmaniasis is a reportable condition in Texas, meaning diagnoses must be reported to local public health officials, this isn't the case nationally. As of 2018, more than 80 cases of locally-caught human leishmaniasis have been reported in the U.S., but it's difficult to accurately estimate the case numbers. To arrive at these findings, the researchers genetically sequenced more than 2,000 tissue samples from patients with suspected cutaneous leishmaniasis across 50 U.S. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |