|
|
|
|
| |
|
|
| Dib,Cristina Corsi; Gonçales,Amane Paldês; Morais,Zenaide Maria de; Souza,Gisele Oliveira de; Miraglia,Fabiana; Abreu,Patricia Antonia Estima; Vasconcellos,Silvio Arruda. |
| We investigated the existence of cross-protection between two anti-leptospirosis monovalent experimental bacterins produced with two strains of Leptospira serogroup Pomona: Fromm strain of serovar Kennewicky, isolated from pigs in the United States, and strain GR6 of serovar Pomona isolated from pigs in Brazil. Both were added of aluminum hydroxide as an adjuvant. Experimental bacterins were tested with the hamster potency test in order to assess protection provided against the disease and against the establishment of kidney infection. Controls were polyvalent commercial vaccine produced with Leptospira strains isolated outside Brazil, which included a representative of Pomona serovar, or Sorensen solution added of aluminum hydroxide adjuvant. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pomona; Hamsters; Bacterin; Cross-protection. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000300042 |
| |
|
|
| Sonada,Rafael Bazaglia; Azevedo,Sérgio Santos de; Soto,Francisco Rafael Martins; Costa,Diego Figueiredo da; Morais,Zenaide Maria de; Souza,Gisele Oliveira de; Gonçales,Amane Paldês; Miraglia,Fabiana; Vasconcellos,Sílvio Arruda. |
| Abstract In swine and bovines, leptospirosis prevention and control is carried out via vaccination of susceptible animals using bacterins. However, the efficiency of leptospirosis vaccines has been questioned. This work aimed to investigate the potency of five leptospirosis vaccines sold commercially in Brazil, challenging the animals with one autochthonous strain of Leptospira, Canicola serovar, denoted LO4, isolated from swine. The standard protocol was followed, and renal carriers of Leptospira were identified among the surviving animals by culture and PCR. Of the five vaccines tested, only two proved effective. None of the surviving animals was positive by culture; however, one animal was positive by PCR. Three of the five vaccines sold commercially in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leptospirosis; Vaccination; Production animals; Control. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000200347 |
| |
|
|
| Lilenbaum,Walter; Morais,Zenaide M.; Gonçales,Amane Paldês; Souza,Gisele O. de; Richtzenhain,Leonardo; Vasconcellos,Silvio A.. |
| Leptospires have never been recovered from goats in Brazil. Serum samples were obtained from 248 goats from Rio de Janeiro and from the seroreactive animals, urine samples were collected and processed for Leptospira isolation. A total of 52 positive reactions were observed, corresponding to 20.9% of the samples. The most prevalent reactions were to serovars Hardjo (36.5%), Shermani (30.8%), Icterohaemorrhagiae (9.6%), Grippotyphosa (9.6%), Autumnalis (5.8%), Castellonis (3.8%) and Bratislava (3.8%). Two strains of Leptospira sp. were isolated, both in the same region, but from different flocks. Presumptive identification based on serologic methods suggests those strains to be from Grippotyphosa serogroup. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Goats; Leptospirosis; Leptospira sp. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000300023 |
| |
|
|
|
