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Porcine Coronaviruses: Overview of the State of the Art

Virologica Sinica 2021年第5期36卷 833-851页

作者： hanna turlewicz-podbielska Małgorzata Pomorska-Mo´l Department of Preclinical Sciences and Infectious Diseases Faculty of Veterinary Medicine and Animal SciencesPoznan University of Life Sciencesul.Wołyn´ska 3560-637 PoznanPoland

Like RNA viruses in general,coronaviruses(CoV)exhibit high mutation rates which,in combination with their strong tendency to recombine,enable them to overcome the host species barrier and adapt to new *** is currently known that six CoV are able to infect *** of them belong to the genus Alphacoronavirus[transmissible gastroenteritis coronavirus(TEGV),porcine respiratory coronavirus(PRCV),porcine epidemic diarrhea virus(PEDV),swine acute diarrhea syndrome coronavirus(SADS-CoV)],one of them to the genus Betacoronavirus[porcine hemagglutinating encephalomyelitis virus(PHEV)]and the last one to the genus Deltacoronavirus(PDCoV).PHEV was one of the first identified swine CoV and is still widespread,causing subclinical infections in pigs in several ***,a spike deletion mutant of TGEV associated with respiratory tract infection,appeared in the 1980 *** is considered nonpathogenic since its infection course is mild or *** its appearance,pig populations have become immune to both PRCV and TGEV,leading to a significant reduction in the clinical and economic importance of ***,PEDV and PDCoV are enteropathogenic CoV and cause clinically indistinguishable acute gastroenteritis in all age groups of *** and SADS-CoV have emerged in 2014(US)and in 2017(China),*** diagnosis is crucial for controlling CoV infections and preventing them from *** vaccines are available only for some porcine CoV,prevention should focus mainly on a high level of *** view of the diversity of CoV and the potential risk factors associated with zoonotic emergence,updating the knowledge concerning this area is essential.

关键词： Coronavirus Pig Emerging Re-emerging

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