Serologic and molecular survey for major viral pathogens in grazing hybrid wild boars in Northeast China

Guo, Huancheng; Ren, Zhaowen; Ding, Mei-ming; Xiao, Wan-jun; Peng, Peng; He, Bingfang; Feng, Ye; Liu, Yan; Li, Xingyu; Cai, Jianqiu; Zhang, Bikai; Luo, Qing; Tu, Changchun

doi:10.1016/s2095-3119(19)62650-x

Cited by 2 publications

(3 citation statements)

References 22 publications

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“…In this study, based on phylogenetic analysis of PCV2 ORF2 genes, PCV2a, PCV2b and PCV2d represented 8.75% (7/80), 38.75% (31/80) and 52.5% (42/80) of the total, respectively. Samples from north-east China showed that the epizootiology of PCV2 in free-ranging wild boars was similar to that of local hybrid wild boars, in which PCV2a, PCV2b and PCV2d are prevalent ( Guo et al., 2019 ). However, only PCV2b and PCV2d were detected in Jiangxi Province ( Hu et al., 2022 ).…”

Section: Discussionmentioning

confidence: 94%

“…These results indicate that persistent infections of PCV2 and PCV1 occurred among free-ranging wild boars in China. In addition, the seroprevalence of PCV2 infection in Chinese free-ranging wild boars is slightly higher than that in domestic pigs in southern China (46.0%, 819/1779) ( Shuai et al., 2007 ) and lower than that in hybrid wild boars in northeast China (96.4%, 163/169) ( Guo et al., 2019 ), which was also differed from that reported in the free-ranging wild boars in other countries, including Brazil (86.5%, 1129/1305) ( Barbosa et al., 2016 ), Greece (19.1%, 18/94) ( Touloudi et al., 2015 ) and Spain (47.9%, 314/656) ( Vicente et al., 2004 ).…”

Section: Discussionmentioning

confidence: 94%

“…In addition to domestic pigs, PCVs have also been found to be prevalent in free-ranging wild boars in many foreign countries, including Italy ( Amoroso et al., 2021 ; Dei Giudici et al., 2020 ), Korea ( Song et al., 2020 ), Brazil ( Souza et al., 2021 ), Austria ( Auer et al., 2022 ), Ukraine ( Rudova et al., 2022 ), Hungary ( Cságola et al., 2006 ), Portugal ( de Sousa Moreira et al., 2022 ) and Germany ( Prinz et al., 2019 ), while the epizootiology of PCVs in Chinese free-ranging wild boars remains little research because of the difficulty of sample collection, although PCV2 infection was observed in hybrid wild boars from north-east China and PCVs in wild boar from Jiangxi Province of China ( Guo et al., 2019 ; Wu et al., 2022 ). Since wild boars are considered an important reservoir of animal and zoonotic pathogens, it is important to identify the epizootiology trends of important and emerging infectious diseases in wild boars for both livestock production and public health issues ( Meng et al., 2009 ; Li et al., 2019 ; Gong et al., 2022 ).…”

Section: Introductionmentioning

confidence: 99%

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Epizootiological surveillance of porcine circoviruses in free-ranging wild boars in China

Gong,

Du,

Wang

et al. 2023

Virologica Sinica

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Section: Discussionmentioning

confidence: 94%

Section: Discussionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Epizootiological surveillance of porcine circoviruses in free-ranging wild boars in China

Gong,

Du,

Wang

et al. 2023

Virologica Sinica

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Synthesizing evidence and identifying knowledge gaps in the role of swine in Japanese encephalitis virus transmission: a rapid systematic review of the literature

Horton,

Hanthorn,

Dixon

et al. 2024

Front. Sustain. Food Syst.

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The United States is considered a susceptible region with great potential for the introduction of the Japanese encephalitis virus (JEV) given the presence of competent mosquito vector species, susceptible maintenance avian hosts, large populations of susceptible domestic and feral swine, intensive travel and trade activities to and from JEV-endemic countries, similar climatic and environmental conditions to epidemic countries, and no active JEV surveillance in place. As pigs are considered JEV’s primary amplifying host, comprehensively reviewing the available body of evidence, and respective knowledge gaps, pertaining to the role of swine in JEV transmission can provide valuable guidance to decision-makers. Our objectives were to synthesize scientific literature on the role of domestic and feral swine in the transmission of JEV via a rapid systematic review and identify knowledge gaps to determine potential areas amenable for future research. A total of 3,638 records were initially identified. Data were extracted from 227 reports. Transmission of JEV occurs primarily via infected mosquitoes; however, some evidence of direct oronasal transmission between pigs has been reported. Despite pigs exhibiting a short-lived viremia, JEV has been demonstrated to persist longer in their tonsils. In sows, JEV infection may cause reproductive disorders, and although maternal antibodies can confer protection for several months under field conditions, naïve piglets can exhibit neurologic signs which may progress to wasting disease. Studies evaluating breed or sex reported no association with JEV seropositivity. Application of biosecurity practices and vector control are recommended as preventive measures against introduction and spread of JEV in swine farms. Although there is no JEV vaccine licensed for pigs in the United States, live attenuated vaccines were reported to elicit superior immunogenicity compared to inactivated vaccines used in endemic countries. Summarizing the current understanding of JEV infection in swine can guide researchers, stakeholders, and policymakers in prioritizing research efforts and developing effective countermeasures. This is particularly crucial in the event of an outbreak in the United States, where preemptive measures can help minimize the spread of the virus, safeguard both human and animal populations, and ensure the long-term sustainability of the swine production sector.

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Serologic and molecular survey for major viral pathogens in grazing hybrid wild boars in Northeast China

Cited by 2 publications

References 22 publications

Epizootiological surveillance of porcine circoviruses in free-ranging wild boars in China

Epizootiological surveillance of porcine circoviruses in free-ranging wild boars in China

Synthesizing evidence and identifying knowledge gaps in the role of swine in Japanese encephalitis virus transmission: a rapid systematic review of the literature

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