Porcine Circovirus 3 Detection in Aborted Fetuses and Stillborn Piglets from Swine Reproductive Failure Cases
Porcine circovirus 3 (PCV-3) has been widely detected in healthy and diseased pigs; among different pathologic conditions, the strongest evidence of association comes from reproductive disease cases. However, simple viral detection does not imply the causality of the clinical conditions. Detection of PCV-3 within lesions may provide stronger evidence of causality. Thus, this study aimed to assess the frequency of PCV-3 detection in tissues from fetuses/stillborn piglets in cases of reproductive problems in domestic swine, as well as the histopathologic assessment of fetal tissues. Fetuses or stillborn piglets from 53 cases of reproductive failure were collected and analyzed by PCV-3 qPCR. The presence of porcine reproductive and respiratory syndrome virus (PRRSV), porcine circovirus 2 (PCV-2), and porcine parvovirus 1 (PPV1) was also checked. PCV-3 qPCR positive samples with a high viral load were tested by PCV-3 in situ hybridization (ISH), sequenced, and phylogenetically analyzed. PCV-3 DNA was detected in 18/53 (33.9%) reproductive failure cases and in 16 of them PCV-3 was the only pathogen found. PCV-2 DNA was found in 5/53 (9.4%), PRRSV RNA in 4/53 (7.5%) and PPV1 was not detected. Four out of the six PCV-3 qPCR-positive cases with Ct value <30 were positive when tested by ISH. In these samples, PCV-3 was detected within mild histopathologic lesions, such as arteritis and periarteritis in multiple tissues. The present work emphasizes the need to include PCV-3 as a potential causative agent of reproductive failure in swine.
619 - Veterinària
Is part of
Saporiti, Viviane, Laura Valls, Jaime Maldonado, Mónica Perez, Florencia Correa-Fiz, Joaquim Segalés, and Marina Sibila. 2021. "Porcine Circovirus 3 Detection In Aborted Fetuses And Stillborn Piglets From Swine Reproductive Failure Cases". Viruses 13 (2): 264. doi:10.3390/v13020264.
Grant agreement number
MINECO/Programa estatal de I+D+I orientada a los retos de la sociedad/E-RTA2017-00007-00-00/ES/Impacto de la infección por un nuevo circovirus porcino (PCV3) en España: desarrollo de herramientas diagnósticas, asociación con enfermedad y exploración de métodos de prevención y control/
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- ARTICLES CIENTÍFICS 
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