serologic evidence of west nile virus infection in horses, yucatan state, mexico.serum samples were obtained from 252 horses in the state of yucatan, mexico, from july to october 2002. antibodies to west nile virus were detected by epitope-blocking enzyme-linked immunosorbent assays in three (1.2%) horses and confirmed by plaque reduction neutralization test. we report the first west nile virus activity in the state of yucatan.200312890328
antibodies to west nile virus in asymptomatic mammals, birds, and reptiles in the yucatan peninsula of mexico.surveillance for evidence of west nile virus (wnv) infection in taxonomically diverse vertebrates was conducted in the yucatan peninsula of mexico in 2003 and 2004. sera from 144 horses on cozumel island, quintana roo state, 415 vertebrates (257 birds, 52 mammals, and 106 reptiles) belonging to 61 species from the merida zoo, yucatan state, and 7 farmed crocodiles in ciudad del carmen, campeche state were assayed for antibodies to flaviviruses. ninety (62%) horses on cozumel island had epitope-b ...200616687701
detection of rna from a novel west nile-like virus and high prevalence of an insect-specific flavivirus in mosquitoes in the yucatan peninsula of part of our ongoing surveillance efforts for west nile virus (wnv) in the yucatan peninsula of mexico, 96,687 mosquitoes collected from january through december 2007 were assayed by virus isolation in mammalian cells. three mosquito pools caused cytopathic effect. two isolates were orthobunyaviruses (cache valley virus and kairi virus) and the identity of the third infectious agent was not determined. a subset of mosquitoes was also tested by reverse transcription-polymerase chain reaction (r ...200919141845
serologic evidence of flavivirus infection in bats in the yucatan peninsula of mexico.we captured 140 bats of seven species in merida city in the yucatan peninsula of mexico in 2010. serum was collected from each bat and assayed by plaque reduction neutralization test (prnt) using six flaviviruses: west nile virus, st. louis encephalitis virus, and dengue viruses 1-4. flavivirus-specific antibodies were detected in 26 bats (19%). the antibody-positive bats belonged to three species: the pallas's long-tongued bat (glossophaga soricina), jamaican fruit bat (artibeus jamaicensis), a ...023778622
west nile virus in resident birds from yucatan, mexico.west nile virus (wnv) in the americas is thought to be transported at large spatial scales by migratory birds and locally spread and amplified by resident birds. local processes, including interspecific interactions and dominance of passerine species recognized as competent reservoirs, may boost infection and maintain endemic cycles. change in species composition has been recognized as an important driver for infection dynamics. due to migration and changes in species diversity and composition i ...201626540336
gonotrophic cycle estimate for culex quinquefasciatus in mérida, yucatán, méxico.west nile virus (wnv) has been present in the yucatán state, méxico, since 2002. culex quinquefasciatus, one of the main vectors of wnv transmission in the united states, is also common in mexico and may be a key vector of wnv transmission t o humans in t he yucatán. the aim of this study was to determine the length of the gonotrophic cycle and the survival rates of cx. quinquefasciatus from mérida, yucatán, during the rainy versus the dry season. mosquitoes were collected during 25-day periods ...200818939685
longitudinal studies of west nile virus infection in avians, yucatán state, méxico.following the introduction of west nile virus (wnv) into north america in 1999, surveillance for evidence of infection with this virus in migratory and resident birds was established in yucatán state, méxico in march 2000. overall, 8611 birds representing 182 species and 14 orders were captured and assayed for antibodies to wnv. of these, 5066 (59%) birds were residents and 3545 (41%) birds were migrants. twenty-one (0.24%) birds exhibited evidence of flavivirus infection. of these, 8 birds had ...200415018768
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