Clinical aspects and weight gain reduction in swine infected with porcine circovirus type 2 and torque teno sus virus in Brazil

Cruz, Ana Claudia de Menezes; Silveira, Renato Luiz; Baez, Camila Freze; Varella, Rafael Brandão; Castro, Tatiana Xavier de

doi:10.1016/j.vetmic.2016.09.012

Cited by 8 publications

(3 citation statements)

References 20 publications

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“…Although TTSuV has been reported in different parts of the world including nearby countries, such as Brazil, Cuba and USA (de Menezes Cruz, Silveira, Baez, Varella, & de Castro, ; Pérez et al., ; Xiao et al., ), this is the first report on detection and genetic diversity of TTSuV1 and TTSuVk2a from the Lesser Antilles. The high rates of detection of TTSuV in an isolated geographical region (St. Kitts Island) corroborated the ubiquitous nature of the virus.…”

Section: Resultsmentioning

confidence: 76%

“…Although phylogenetic analysis revealed varying levels of genetic diversity among the TTSuV strains from St. Kitts, it was difficult to establish possible links between the epidemiological data and virus clustering patterns, as (a) virus strains from the same pig farm (of sample origin), breed, or year of detection clustered separately and vice versa, (b) the pig farms were located not far from each other (the total land area of St. Kitts is 67 square miles), and (c) samples were obtained from the same age group of animals.Although TTSuV has been reported in different parts of the world including nearby countries, such as Brazil, Cuba and USA (de Menezes Cruz, Silveira,Baez, Varella, & de Castro, 2016;Pérez et al, 2011;Xiao et al, 2012), this is the first report on detection and genetic diversity of TTSuV1 and TTSuVk2a from the Lesser Antilles.The high rates of detection of TTSuV in an isolated geographical region (St. Kitts Island) corroborated the ubiquitous nature of the virus. In this study, TTSuV1 was found to be more prevalent than TTSuVk2a.…”

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confidence: 82%

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High detection rates of Torque teno sus virus in co-infection with important viral pathogens in porcine kidneys on St. Kitts Island, Lesser Antilles

Ghosh

Soto

Illanes

et al. 2018

Transbound Emerg Dis

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We report here high rates of detection (50.8%, 31/61 pigs) of Torque teno sus virus (TTSuV) in kidneys of slaughter-age, apparently healthy pigs on St. Kitts island, Lesser Antilles. TTSuV1 and TTSuVk2a were detected in 23 (37.7%) and 13 (21.3%) pigs, respectively, including mixed infection in five animals. By nucleotide sequence identities and phylogenetic analysis, significant genetic diversity was observed among both TTSuV1 and TTSuVk2a on St. Kitts, with TTSuVk2a showing higher genetic diversity than TTSuV1. Fourteen (45.2%) and 10 (32.2%) of the TTSuV infected pigs tested positive for porcine circovirus type 2 (PCV2) and porcine parvovirus (PPV), respectively, revealing high rates of co-infection of TTSuV with PCV2 and PPV. This is the first report on detection and genetic diversity of TTSuV from the Lesser Antilles. Also, PCV2 and PPV were detected for the first time in the Lesser Antilles. Considering the impact of pig farming on the regional livestock economy, the increasing demand for local pork and lack of information on emerging and re-emerging porcine viruses in the Lesser Antilles, the present findings have important implications on swine health.

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Section: Resultsmentioning

confidence: 76%

mentioning

confidence: 82%

High detection rates of Torque teno sus virus in co-infection with important viral pathogens in porcine kidneys on St. Kitts Island, Lesser Antilles

Ghosh

Soto

Illanes

et al. 2018

Transbound Emerg Dis

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“…A study has demonstrated a prevalence of PCV2 of ~25% in swine herds from the Rio de Janeiro State in Brazil. 5 In addition, we detected IAV in 7.2% of our samples. This finding reinforces the occurrence of IAV in commercial Brazilian swine herds, as demonstrated previously with serologic testing.…”

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confidence: 57%

Molecular detection of respiratory coinfections in pig herds with enzootic pneumonia: a survey in Brazil

Balestrin

Wolf

et al. 2022

J VET Diagn Invest

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Mycoplasma hyopneumoniae is the primary etiologic agent of swine enzootic pneumonia (EP), in which the immune response is reduced, making pigs susceptible to secondary infections. We surveyed commercial pig herds in Brazil for viral and bacterial respiratory coinfections that could complicate EP. Over a 2-y period (2015–2016), we found that 854 of 2,206 pigs (38.7%) were positive for M. hyopneumoniae in herds from various production systems in 3 Brazilian regions (Central-West, Southeast, South). We collected samples of 321 lungs positive for M. hyopneumoniae from 169 farms to also screen for Pasteurella multocida, Actinobacillus pleuropneumoniae, Glaesserella parasuis, influenza A virus (IAV), and porcine circovirus 2 (PCV2) by real-time PCR. The prevalence of pathogens found in addition to M. hyopneumoniae varied: P. multocida (141; 43.9%), G. parasuis (71; 22.1%), PCV2 (50; 15.6%), IAV (23; 7.2%), and A. pleuropneumoniae (18; 5.6%). G. parasuis was more frequent in farrowing or nursery herds (48.7%) than in breeding and fattening herds (10% and 18.6%, respectively; p < 0.01); A. pleuropneumoniae was found only in herds on farrow-to-finish and fattening farms.

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Anelloviruses

Segalés¹,

Kekarainen²

2019

Diseases of Swine

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Clinical aspects and weight gain reduction in swine infected with porcine circovirus type 2 and torque teno sus virus in Brazil

Cited by 8 publications

References 20 publications

High detection rates of Torque teno sus virus in co-infection with important viral pathogens in porcine kidneys on St. Kitts Island, Lesser Antilles

High detection rates of Torque teno sus virus in co-infection with important viral pathogens in porcine kidneys on St. Kitts Island, Lesser Antilles

Molecular detection of respiratory coinfections in pig herds with enzootic pneumonia: a survey in Brazil

Anelloviruses

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