R
Roberta Lemos Freire
Researcher at Universidade Estadual de Londrina
Publications - 155
Citations - 2533
Roberta Lemos Freire is an academic researcher from Universidade Estadual de Londrina. The author has contributed to research in topics: Toxoplasma gondii & Toxoplasmosis. The author has an hindex of 25, co-authored 151 publications receiving 2223 citations. Previous affiliations of Roberta Lemos Freire include University of East London.
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Prevalence of Neospora caninum and Toxoplasma gondii in sheep and dogs from Guarapuava farms, Paraná State, Brazil.
Paulo Roberto Romanelli,Roberta Lemos Freire,Odilon Vidotto,Elizabete Regina Marangoni Marana,Liza Ogawa,V.S.O. de Paula,João Luis Garcia,Italmar Teodorico Navarro +7 more
TL;DR: Age, breed, farm size, semi-intensive activity, mineral salt supplementation, water origin, stage of the pregnancy when reproduction problems occurred, neurological problems in lambs, presence of rodents in the food room and pasture cat access were identified as associated factors for the occurrence of toxoplasmosis in sheep.
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Seroepidemiology of canine babesiosis and ehrlichiosis in a hospital population.
Silvia Manduca Trapp,Ana Silvia Dagnone,Odilon Vidotto,Roberta Lemos Freire,Alexandre Mendes Amude,Helio Autran de Morais +5 more
TL;DR: Seroprevalence of canine babesiosis and ehrlichiosis, and risk factors for seropositivity, were prospectively determined and clinical signs differed from the most common signs in other regions with bleeding occurring more in dogs seropositive to babesia vogeli, but not eHRlichiosis; neurologic signs in dogs with E. canis.
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Characterization of Toxoplasma gondii isolates from free range chickens from Paraná, Brazil
Jitender P. Dubey,Italmar Teodorico Navarro,D. H. Graham,E. Dahl,Roberta Lemos Freire,L.B. Prudencio,C. Sreekumar,M.C.B. Vianna,Tovi Lehmann +8 more
TL;DR: Genotyping of 13 chicken isolates of T. gondii using the SAG2 locus indicated that seven isolates were type I and six were type III; three of these type III isolates killed all infected mice suggesting that all strains virulent for mice are not type I.
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Toxoplasma gondii in fresh pork sausage and seroprevalence in butchers from factories in Londrina, Paraná State, Brazil
Rafael André Ferreira Dias,Italmar Teodorico Navarro,Bruno Bergamo Ruffolo,Felipe Monteiro Bugni,Marcelo Viana de Castro,Roberta Lemos Freire +5 more
TL;DR: It is concluded that fresh pork sausage could be important in the transmission of toxoplasmosis.
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Partial protection against tissue cysts formation in pigs vaccinated with crude rhoptry proteins of Toxoplasma gondii
João Luis Garcia,Solange Maria Gennari,Italmar Teodorico Navarro,Rosângela Zacarias Machado,Idércio Luiz Sinhorini,Roberta Lemos Freire,Elizabete Regina Marangoni Marana,Vinícius Suehiro Tsutsui,Ana Paula Angelucci Contente,Leonardo Prudencio Begale +9 more
TL;DR: A vaccine containing crude Toxoplasma gondii rhoptry proteins incorporated in the immunostimulating complexes (ISCOM) adjuvant was tested in pigs for protecting against tissue cyst formation.