Características de Oligoryzomys longicaudatus asociadas a la presencia del virus Andes (Hantavirus)

Piudo, Luciana; Monteverde, Martín; Walker, R. Susan; Douglass, Richard J.

doi:10.4067/s0716-10182012000200013

Cited by 10 publications

(8 citation statements)

References 35 publications

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“…Although we did not search for viral RNA in seronegative rodents, there it might be a proportion of rodents that are viremic and without antibodies that might be excreting the virus into the environment. We found that adult males (32/41 of positives) are more likely to be seropositive than females (9/41 of positives; Table 2), a result congruent with studies in several wild reservoirs [20,67,69,70,71,72,73]. Our logistic regression (Figure 2) also shows that O. longicaudatus weighing 60 g or more were more likely (80%) to be infected with ANDV.…”

Section: Discussionsupporting

confidence: 88%

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A 19 Year Analysis of Small Mammals Associated with Human Hantavirus Cases in Chile

Torres-Pérez

Palma

Boric-Bargetto

et al. 2019

Viruses

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Small mammals present in areas where hantavirus cardiopulmonary syndrome (HCPS) cases had occurred in central and southern Chile were captured and analyzed to evaluate the abundance of rodents and seroprevalence rates of antibodies to Andes orthohantavirus (ANDV). Sampling areas ranged from the Coquimbo to Aysén regions (30–45° S approx.) regions. Ninety-two sites in peridomestic and countryside areas were evaluated in 19 years of sampling. An antibody against ANDV was detected by strip immunoassay in 58 of 1847 specimens captured using Sherman traps. Of the eleven species of rodents sampled, Abrothrix olivacea, Oligoryzomys longicaudatus and Abrothrix hirta were the most frequently trapped. O. longicaudatus had the highest seropositivity rate, and by logistic regression analysis, O. longicaudatus of at least 60 g had 80% or higher probability to be seropositive. Sex, age and wounds were significantly related to seropositivity only for O. longicaudatus. Across administrative regions, the highest seropositivity was found in the El Maule region (34.8–36.2° S), and the highest number of HCPS cases was registered in the Aysén region. Our results highlight the importance of long term and geographically extended studies, particularly for highly fluctuating pathogens and their reservoirs, to understand the implications of the dynamics and transmission of zoonotic diseases in human populations.

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Section: Discussionsupporting

confidence: 88%

“…and those of 43 g (approx.) with wounds, have a probability of 0.80 to be infected with the virus [73]. Our analysis was performed including both wounded and non-wounded O. longicaudatus from all ages.…”

Section: Discussionmentioning

confidence: 99%

A 19 Year Analysis of Small Mammals Associated with Human Hantavirus Cases in Chile

Torres-Pérez

Palma

Boric-Bargetto

et al. 2019

Viruses

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“…Several spillover events and possible host-switching events have been documented in Argentina (Vadell et al 2011;Polop et al 2010;Piudo et al 2005). Rural and protected natural areas have rich communities of sylvan Sigmodontinae rodents (Teta et al 2009a;Teta et al 2009b;Gó mez Villafañe et al 2012) including hantavirus reservoir species (Suárez et al 2003;Vadell et al 2011;Piudo et al 2012), in contrast to urban areas where there are commensal rodents, which are not hantavirus reservoirs in Argentina (Cavia et al 2009, Palma et al 2012. Therefore, sylvan and rural areas are places where contact between people (tourists and workers) and sylvan rodents is favored (Marconi and Kravetz 1986).…”

Section: Introductionmentioning

confidence: 95%

Daily Movements and Microhabitat Selection of Hantavirus Reservoirs and Other Sigmodontinae Rodent Species that Inhabit a Protected Natural Area of Argentina

et al. 2015

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Abundance, distribution, movement patterns, and habitat selection of a reservoir species influence the dispersal of zoonotic pathogens, and hence, the risk for humans. Movements and microhabitat use of rodent species, and their potential role in the transmission of hantavirus were studied in Otamendi Natural Reserve, Buenos Aires, Argentina. Movement estimators and qualitative characteristics of rodent paths were determined by means of a spool and line device method. Sampling was conducted during November and December 2011, and March, April, June, October, and December 2012. Forty-six Oxymycterus rufus, 41 Akodon azarae, 10 Scapteromys aquaticus and 5 Oligoryzomys flavescens were captured. Movement patterns and distances varied according to sex, habitat type, reproductive season, and body size among species. O. flavescens, reservoir of the etiologic agent of hantavirus pulmonary syndrome in the region, moved short distances, had the most linear paths and did not share paths with other species. A. azarae had an intermediate linearity index, its movements were longer in the highland grassland than in the lowland marsh and the salty grassland, and larger individuals traveled longer distances. O. rufus had the most tortuous paths and the males moved more during the non-breeding season. S. aquaticus movements were associated with habitat type with longer distances traveled in the lowland marsh than in the salty grassland. Hantavirus antibodies were detected in 20% of A. azarae and were not detected in any other species. Seropositive individuals were captured during the breeding season and 85% of them were males. A. azarae moved randomly and shared paths with all the other species, which could promote hantavirus spillover events.

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“…The effect of age, which is associated with a long exposure to the virus, supports the idea that horizontal transmission is the main mechanism for maintaining hantavirus in nature [97]. In short, sex, age, body mass, and wounds were important predictors regarding the probability of hantavirus infection within the rodent reservoirs populations [98,99]. …”

Section: Hantavirus Hostsmentioning

confidence: 74%

Hantavirus Reservoirs: Current Status with an Emphasis on Data from Brazil

Oliveira

Guterres

Fernandes

et al. 2014

Viruses

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Since the recognition of hantavirus as the agent responsible for haemorrhagic fever in Eurasia in the 1970s and, 20 years later, the descovery of hantavirus pulmonary syndrome in the Americas, the genus Hantavirus has been continually described throughout the World in a variety of wild animals. The diversity of wild animals infected with hantaviruses has only recently come into focus as a result of expanded wildlife studies. The known reservoirs are more than 80, belonging to 51 species of rodents, 7 bats (order Chiroptera) and 20 shrews and moles (order Soricomorpha). More than 80genetically related viruses have been classified within Hantavirus genus; 25 recognized as human pathogens responsible for a large spectrum of diseases in the Old and New World. In Brazil, where the diversity of mammals and especially rodents is considered one of the largest in the world, 9 hantavirus genotypes have been identified in 12 rodent species belonging to the genus Akodon, Calomys, Holochilus, Oligoryzomys, Oxymycterus, Necromys and Rattus. Considering the increasing number of animals that have been implicated as reservoirs of different hantaviruses, the understanding of this diversity is important for evaluating the risk of distinct hantavirus species as human pathogens.

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Características de Oligoryzomys longicaudatus asociadas a la presencia del virus Andes (Hantavirus)

Cited by 10 publications

References 35 publications

A 19 Year Analysis of Small Mammals Associated with Human Hantavirus Cases in Chile

A 19 Year Analysis of Small Mammals Associated with Human Hantavirus Cases in Chile

Daily Movements and Microhabitat Selection of Hantavirus Reservoirs and Other Sigmodontinae Rodent Species that Inhabit a Protected Natural Area of Argentina

Hantavirus Reservoirs: Current Status with an Emphasis on Data from Brazil

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