Publications by authors named "A Fernandez-Arevalo"

Chagas disease (CD) has become a worldwide problem due to globalization. In Europe, most cases are imported and are diagnosed in the chronic phase by two serological tests, as recommended by the World Health Organization. Chemiluminescent microparticle immunoassays (CMIAs) are an emerging alternative to the diagnostic standard.

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Article Synopsis
  • Chagas disease (CD) is gaining attention in the US, originally a Latin American issue, due to increased human migration and the presence of disease vectors and hosts within the country.
  • The research project reviewed 34 studies on the genetic diversity of the disease in triatomine insects and mammalian hosts across 18 US states, primarily focused on Texas, Louisiana, and New Mexico.
  • TcI and TcIV were the main genetic types found, with TcI being the most prevalent, highlighting the need for ongoing monitoring and management of Chagas disease as its distribution may change over time.
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In 2009, a large outbreak of leishmaniasis, associated with environmental changes, was declared near Madrid (Spain), in which was the vector, whereas the main reservoirs were hares and rabbits. Analysis of isolates from humans, vectors and leporids from the focus identified the ITS-Lombardi genotype. However, multilocus enzyme electrophoresis (MLEE), the reference technique for typing, and sequencing of the gene, a commonly used marker, were not performed.

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Leishmaniases are zoonotic diseases caused by protozoa of the genus Leishmania. In Bolivia, leishmaniasis occurs mainly in the cutaneous form (CL) followed by the mucosal or mucocutaneous form (ML or MCL), grouped as tegumentary leishmaniosis (TL), while cases of visceral leishmaniasis (VL) are rare. The cases of TL are routinely diagnosed by parasitological methods: Direct Parasitological Exam (DPE) and axenic culture, the latter being performed only by specialized laboratories.

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Matrix-assisted laser desorption/ionization-time of flight mass spectrometry (MALDI-TOF MS) is a proteomic technique with proven efficiency in the identification of microorganisms, such as bacteria, fungi, and parasites. The present study aimed to evaluate the usefulness of MALDI-TOF MS for the characterization of species circulating in Bolivia using gene sequencing as a reference technique. 55 strains that were isolated from patients with tegumentary leishmaniasis were analyzed.

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