Bocaviruses are associated with many human infectious diseases,such as respiratory tract infections,gastroen-teritis,and hepatitis.Rats are known to be reservoirs of bocaviruses,including rodent bocavirus and rat bocavirus.Recently,ungulate bocaparvovirus 4,a known porcine bocavirus,has also been found in rats.Thus,investigating bocaviruses in rats is important for determining the origin of the viruses and preventing and controlling their transmission.To the best of our knowledge,no study to date has investigated bocaviruses in the livers of rats.In this report,a total of 624 rats were trapped in southern China between 2014 and 2017.Liver and serum samples from rats were tested for the prevalence of bocaviruses using PCR.Sequences related to ungulate bocaparvovirus 4 and rodent bocavirus were detected in both liver and serum samples.Interestingly,the prevalence of ungulate bocaparvovirus 4(reference strain:KJ622366.1)was higher than that of rodent bocavirus(reference strain:KY927868.1)in both liver(2.24％and 0.64％,respectively)and serum samples(2.19％and 0.44％,respectively).The NSI regions of ungulate bocaparvovirus 4 and rodent bocavirus related sequences displayed over 84％and 88％identity at the nucleic acid and amino acid levels,respectively.Furthermore,these sequences had similar genomic structure,genomic features,and codon usage bias,and shared a common ancestor.These viruses also displayed greater adaptability to rats than pigs.Our results suggested that ungulate bocaparvovirus 4 and rodent bocavirus may originate from rats and may be different genotypes of the same bocavirus species.

Wenqiao He;Yuhan Gao;Yuqi Wen;Xuemei Ke;Zejin Ou;Jiaqi Fu;Mingji Cheng;Yun Mo;Qing Chen

Department of Epidemiology,School of Public Health,Guangdong Provincial Key Laboratory of Tropical Disease Research,Southern Medical University,Guangzhou,510515,China;Xiamen Center for Disease Control and Prevention,Xiamen.361000,China

中国病毒学

[1]Wenqiao He;Yuhan Gao;Yuqi Wen;Xuemei Ke;Zejin Ou;Jiaqi Fu;Mingji Cheng;Yun Mo;Qing Chen-.Ungulate bocaparvovirus 4 and rodent bocavirus are different genotypes of the same species of virus)[J].中国病毒学,2022(02):215-222

Ungulate,bocaparvovirus,Bocaviruses,gastroen,teritis,bocaviruses,ungulate,KJ622366,KY927868

rodent,different,genotypes,same,species,associated,many,human,infectious,diseases,such,respiratory,tract,infections,hepatitis,Rats,known,reservoirs,including,Recently,porcine,has,also,been,found,rats,Thus,investigating,important,determining,preventing,controlling,their,transmission,To,best,our,knowledge,study,date,investigated,livers,this,report,total,were,trapped,southern,China,between,Liver,serum,samples,from,tested,prevalence,using,Sequences,related,detected,both,Interestingly,reference,strain,was,higher,than,that,respectively,NSI,regions,sequences,displayed,over,identity,nucleic,acid,amino,levels,Furthermore,these,had,similar,genomic,structure,features,codon,usage,bias,shared,common,ancestor,These,greater,adaptability,pigs,Our,results,suggested,may,originate

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