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Ecological study of hantavirus infection in wild rodents in an endemic area in Brazil

2013; Elsevier BV; Volume: 131; Linguagem: Inglês

10.1016/j.actatropica.2013.11.016

1873-6254

Renata Carvalho de Oliveira, Rosana Gentile, Alexandro Guterres, Jorlan Fernandes, Bernardo Rodrigues Teixeira, Vanderson Corrêa Vaz, Fernanda P. Valdez, Luciana Helena Bassan Vicente, Sócrates Fraga da Costa-Neto, Cibele Rodrigues Bonvicino, Paulo Sérgio D’Andrea, Elba Regina Sampaio de Lemos,

Fire effects on ecosystems

A 3-year ecological study of small mammals was carried out in an endemic area for hantavirus pulmonary syndrome in the state of Santa Catarina in Southern Brazil. A total of 994 rodents of 14 different species corresponding to the subfamilies of Sigmodontinae, Murinae, Eumysopinae, and Caviinae were captured during 2004-2006. Oligoryzomys nigripes and Akodon montensis were the most abundant species and showed a clear seasonal pattern with higher population sizes during the winter. Rodent population outbreaks, associated within bamboo mast seeding events, were detected predominantly in areas where hantavirus pulmonary syndrome cases were notified in the state. Antibody reactivity to Hantavirus was detected in five sigmodontine species: O. nigripes (39/435), A. montensis (15/318), Akodon paranaensis (4/37), Thaptomys nigrita (1/86) and Sooretamys angouya (1/12). The highest hantavirus antibody prevalence occurred during the period of highest population size in A. montensis. For O. nigripes, hantavirus prevalence was higher in late spring, when reproduction was more frequent. Co-circulation of Juquitiba (JUQV) and Jabora (JABV) viruses was observed - JABV in A. paranaensis and A. montensis; JUQV in O. nigripes and T. nigrita. JABV occurrence was associated to gender and population size of the rodent while JUQV was related to gender, season, temperature, and locality.