Elis Lorenzetti

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Rotaviruses (RVs) are a major cause of severe diarrhea in humans and animals. Five of the nine RV groups (RVA, RVB, RVC, RVE, and RVH) have been previously detected in pigs; however, in pig herds worldwide, most studies highlight diarrhea outbreaks caused by RVA. In the present study, we describe detection and characterization of RV groups A, B, C, and H in(More)
There are few studies involving the detection of Aichivirus B in cattle herds worldwide, and this virus has never been diagnosed in South America. This study evaluated 222 diarrhoeic faecal samples from four Brazilian geographical regions (South, Southeast, Midwest, and North), collected between February 2010 to May 2012. To evaluate the frequency of(More)
Porcine group C rotavirus (RVC) is recognised as an enteric pathogen in piglets worldwide. The VP6 gene of RVC is divided into seven I-genotypes. Genotypes I2 and I3 are found in human and bovine strains, respectively; the porcine strains are divided into the other five genotypes (I1, I4–I7). In this study, molecular analysis of nearly the full length of(More)
Lorenzetti E., Stipp D.T., Possatti F., Campanha J.E.T., Alfieri A.F. & Alfieri A.A. 2014. Diarrhea outbreaks in suckling piglets due to rotavirus group C single and mixed (rotavirus groups A and B) infections. Pesquisa Veterinária Brasileira 34(5):391397. Laboratory of Animal Virology, Department of Veterinary Preventive Medicine, Universidade Estadual de(More)
The aim of this study was to perform the molecular characterization of the eleven genes of a G6P[5] bovine group A rotavirus (RVA) strain detected in a diarrhea outbreak from a vaccinated beef cattle herd. The outbreak affected 80 % of calves between 15–30 days old. RVA was identified by RT-PCR in 12 (70.6 %) out of 17 diarrheic fecal samples evaluated. The(More)
Group A rotavirus (RV-A) with short electropherotype was identified by ss-PAGE in a neonatal diarrhea outbreak at a Brazilian pig farm where the sows were regularly vaccinated with a commercial vaccine containing OSU (G5P[7]) and Gottfried (G4P[6]) porcine RV-A (PoRV-A) strains. The ss-PAGE positive stool samples (n=20) were characterized as P[6] genotype(More)
We determined nucleotide and deduced amino acid sequences of the rotavirus gene encoding viral protein 6 from 3 fecal samples collected from piglets with diarrhea in Brazil, 2012. The analyses showed that the porcine rotavirus strains in Brazil are closely related to the novel species H rotavirus.
This study aimed to evaluate the natural infection by SaV in pigs of different categories of production cycle in an important Brazilian pig-producing region. Faecal samples (n = 169) of suckling, post-weaning, finisher and breeder pig categories were analysed. Animals were from five farrow-to-weaning and nine grower-to-finish commercial pig farms. The(More)
BACKGROUND This study evaluated the presence of rotavirus groups A, B, and C (RV-A, RV-B, and RV-C), sapovirus (SaV), and norovirus (NoV) in asymptomatic non-human primates (NHP). METHODS Fecal samples were collected from 19 recently captured (Red-howler, Alouatta guariba clamitans, n = 18; Howler, Alouatta caraya, n = 1) and 43 free-ranging NHP(More)
This report describes the identification of an unusual G26P[13] genotype combination in a porcine group A rotavirus (RVA) strain. In a retrospective study, the VP7 (G type) and VP4 (P type) genes of porcine RVA Brazilian field strains identified in two diarrheic suckling piglets were amplified by RT-PCR and subjected to sequencing. The sequence analysis(More)