Equine Encephalomyelitis Virus Isolated From Naturally Infected Triatoma sanguisuga LeConte Equine Encephalomyelitis Virus Isolated From Naturally Infected Triatoma sanguisuga LeConte
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High Trypanosoma cruzi (Kinetoplastida: Trypanosomatidae) prevalence in Triatoma sanguisuga (Hemiptera: Redviidae) in southeastern Louisiana.
From May through November 2007, intensive weekly surveys at the site of a previously reported autochthonous human case of Chagas parasite infection resulted in the collection of 298 Triatoma sanguisuga (Leconte) specimens, of which 60.4% (180) were polymerase chain reaction positive for Trypanosoma cruzi Chagas. All were adults, in a ratio of approximately 1:1 female to male, indicating that th...
متن کاملEnzyme-linked immunosorbent assay detection of immunoglobulins G and M to Venezuelan equine encephalomyelitis virus in vaccinated and naturally infected humans.
Enzyme-linked immunosorbent assays (ELISAs) were developed for detection of immunoglobulin G (IgG) and IgM antibodies to Venezuelan equine encephalomyelitis (VEE) virus in vaccinated and naturally infected humans. A total of 441 sera found negative for VEE antibodies by plaque reduction neutralization were examined by IgG ELISA and gave a 1.0% false-positive rate; no false-positives were found ...
متن کاملExperimental Venezuelan equine encephalomyelitis virus infection of the bovine.
Two groups of four dairy cows (Bos taurus) were infected subcutaneously with the epizootic Venezuelan equine encephalomyelitis virus (VEE) strains MF-8 and San Pelayo, respectively. Animals experienced no clinical illness, but all developed significant neutropenia. Virus was recovered once each from the blood of three animals but did not exceed 10(2.2) SMICLD(50) (Suckling mouse intracerebral l...
متن کاملTriatoma sanguisuga Blood Meals and Potential for Chagas Disease, Louisiana, USA
To evaluate human risk for Chagas disease, we molecularly identified blood meal sources and prevalence of Trypanosoma cruzi infection among 49 Triatoma sanguisuga kissing bugs in Louisiana, USA. Humans accounted for the second most frequent blood source. Of the bugs that fed on humans, ≈40% were infected with T. cruzi, revealing transmission potential.
متن کاملUse of a new synthetic-peptide-derived monoclonal antibody to differentiate between vaccine and wild-type Venezuelan equine encephalomyelitis viruses.
We have prepared a murine monoclonal antibody (MAb) capable of distinguishing between wild-type Venezuelan equine encephalomyelitis (VEE) virus and the TC-83 vaccine derivative. This MAb, 1A2B-10, was derived from immunization with a synthetic peptide corresponding to the first 19 amino acids of the E2 glycoprotein of Trinidad donkey VEE virus. The MAb reacts with prototype viruses from all nat...
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تاریخ انتشار 2000