Cocirculation of Rio Negro Virus (RNV) and Pixuna Virus (PIXV) in Tucumán province, Argentina

  title={Cocirculation of Rio Negro Virus (RNV) and Pixuna Virus (PIXV) in Tucum{\'a}n province, Argentina},
  author={Mar{\'i}a Bel{\'e}n Pisano and M J Dantur and Viviana Elizabeth R{\'e} and L A D{\'i}az and Adrian A Far{\'i}as and Mar{\'i}a Paz S{\'a}nchez Seco and Antonio Ten{\'o}rio and Walter R. Almir{\'o}n and Marta Silvia Contigiani},
  journal={Tropical Medicine \& International Health},
Venezuelan equine encephalitis complex includes viruses considered emerging pathogens for humans and animals in the Americas. Two members of this complex have been detected previously in Argentina: Rio Negro Virus (RNV), detected in mosquitoes from Chaco province and rodents from Formosa province, and Pixuna Virus (PIXV), detected in mosquitoes from Chaco province. To carry out surveillance studies in other parts of the country, detection of a 195‐bp fragment of alphaviruses by RT‐nested PCR… 
Enzootic activity of pixuna and Rio Negro viruses (Venezuelan equine encephalitis complex) in a neotropical region of Argentina.
This is the first report of the circulation of Pixuna virus in Argentina, and it confirms enzootic and endemic activity of RNV(AG80-663) in neotropical regions of this country.
First detection of Rio Negro virus (Venezuelan equine encephalitis complex subtype VI) in Córdoba, Argentina.
This is the first report of RNV circulation in the central area of Argentina, indicating an expansion of its original distribution and the importance of strengthening surveillance procedures in endemic areas, as well as in new regions where RNV may emerge.
Genetic and evolutionary characterization of Venezuelan equine encephalitis virus isolates from Argentina.
  • M. B. Pisano, C. Torres, M. Contigiani
  • Biology
    Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases
  • 2014
Venezuelan Equine Encephalitis Viruses (VEEV) in Argentina: Serological Evidence of Human Infection
Seroprevalence studies for VEEV subtypes IAB, ID, IF, IF (Mosso das Pedras virus; MDPV), IV (Pixuna virus; PIXV) and VI (Rio Negro virus; RNV) were conducted in persons from Northern provinces of Argentina, using plaque reduction neutralization test (PRNT).
Functional entry of members of Venezuelan Equine Encephalitis Complex into host cells is dependent on clathrin-mediated endocytosis, in a pH-dependent manner
It is demonstrated that both viruses are internalized primarily via clathrin-mediated endocytosis, where the low pH of endosomes is crucial for viral replication.
Emergent and Reemergent Arboviruses in South America and the Caribbean: Why So Many and Why Now?
A diverse mosquito fauna, changing climate and vegetation, increased travel, and unplanned urbanization producing conditions for the proliferation of Aedes aegypti, Culex quinquefasciatus Say, and other vectors have combined to strongly influence changes in the distribution and incidence of several arboviruses.
Pixuna virus modifies host cell cytoskeleton to secure infection
It is demonstrated that PIXV relies not only on intact MTs for the efficient production of virus, but also on a dynamic actin network during the early steps of viral replication.
Distribution of Mosquitoes in the South East of Argentina and First Report on the Analysis Based on 18S rDNA and COI Sequences
The relationships among groups at the supra-species level in concordance with mosquito taxonomy are indicated and the introduction and spread of vectors and diseases carried by them are not known in Mar del Plata.
New Records of Mosquitoes from Northwestern Argentina
Abstract Eleven mosquito species, namely Aedes hastatus, Ae. fulvus, Coquillettidia albicosta, Cq. juxtamansonia, Culex aliciae, Cx. delpontei, Cx. oedipus, Cx. pedroi, Mansonia flaveola, Uranotaenia


Enzootic activity of pixuna and Rio Negro viruses (Venezuelan equine encephalitis complex) in a neotropical region of Argentina.
This is the first report of the circulation of Pixuna virus in Argentina, and it confirms enzootic and endemic activity of RNV(AG80-663) in neotropical regions of this country.
[Presence of antibodies against Venezuelan equine encephalitis virus subtype VI in patients with acute febrile illness].
The seroconversions detected with AG80-663 strain firmly indicate that during the outbreak this virus subtype was circulating in the island, although the authors could not assure that it was the causal agent of the acute disease.
Summary Mucambo virus (BeAn 8), previously described as a strain of Venesuelan equine encephalomyelitis (VEE) virus from the Amazon region of Brazil, can be differentiated from VEE virus by
Arbovirus investigations in Argentina, 1977-1980. II. Arthropod collections and virus isolations from Argentine mosquitoes.
Prospective surveys for arboviruses were carried out in Santa Fe, Corrientes, and Chaco provinces, Argentina, aperiodically during 1977-1980. A total of 313,233 mosquitoes and 598 biting flies other
[Venezuelan equine encephalitis].
  • Murnane Tg
  • Medicine, Biology
    Bulletin - Office international des epizooties
  • 1971
Venezuelan equine encephalomyelitis (VEE) viruses are taxonomically classified within the genus Alphavirus of the family Togaviridae (formerly the Group A arboviruses). The VEE complex of viruses
Repeated emergence of epidemic/epizootic Venezuelan equine encephalitis from a single genotype of enzootic subtype ID virus
P phylogenetic analyses of VEE virus isolates spanning the entire temporal and geographic range of strains available indicated that VEE emergence has resulted from several distinct combinations of mutations that generate viruses with similar antigenic and equine virulence phenotypes.
Seroprevalence of antibodies to Venezuelan equine encephalitis complex (subtypes IAB and VI) in humans from General Belgrano island, Formosa, Argentina.
It was observed that both subtypes circulate simultaneously, while subtype VI remains constant with some peaks, subtype I was found in low level.
The use of an animal-baited net trap for collecting mosquitoes during western equine encephalitis investigations in Argentina.
A large net trap was used to sample mosquito populations attracted to horses at three sites each in Santa Fe and Rio Negro Provinces, Argentina, during the austral summer of 1984, indicating that this trap can become a useful tool in arbovirus ecology studies in other areas.
Biological Weapons—A Primer for Microbiologists
The microbiologist and biological safety professional can provide with responsible officials a practical assessment of the biological weapons incident in order to help address microbiological and safety issues, minimize fear and concerns of those responding to the incident, and help manage individuals potentially exposed to a threat agent.