Molecular prevalence of bovine noroviruses and neboviruses in newborn calves in Iran

Pourasgari, Farzaneh; Kaplon, Jérôme; Sanchooli, Alireza; Fremy, Céline; Karimi-Naghlani, Shahla; Otarod, Vahid; Ambert-Balay, Katia; Mojgani, N.; Pothier, Pierre

doi:10.1007/s00705-018-3716-y

Cited by 18 publications

(23 citation statements)

References 32 publications

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“…Molecular and phylogenetic analyses of a portion of the RdRp region of the neboviruses in this study characterized them as Nebraska-like, similar to those reported in the USA, Italy, South Korea, Tunisia and Turkey [16,20,21,27,29]. Although there are only a few studies on the epidemiology of neboviruses, the results obtained so far indicate that Newbury1-like strains have been detected only in the United Kingdom, Brazil and Iran [28,30,31].…”

supporting

confidence: 83%

“…BoNoVs were detected in diarrheic calves at a much higher rate than previously seen in Turkish reports (1.7-8.5%) [18][19][20] but at a similar rate to that reported in European countries and North America [9,21,26]. The prevalence rate of nebovirus was higher than the reported rates in Tunisia [27], Brazil [28], Italy [16], France [9], South Korea [29] and the United Kingdom [30], while it was similar to prevalence rates (21.6-39.5%) reported in North America and Iran [21,26,31]. There has been only one other study on the prevalence of neboviruses (25.19%) in Turkey [20], and the similarity in its reported prevalence rates to those seen here is noteworthy.…”

supporting

confidence: 76%

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Molecular characterization of bovine noroviruses and neboviruses in Turkey: detection of recombinant strains

Karayel-Hacioglu

Alkan

2019

Arch Virol

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To investigate the molecular epidemiology and genetic diversity of bovine enteric caliciviruses, a total of 167 fecal samples from diarrheic calves were screened. Bovine noroviruses (BoNoVs) and neboviruses were detected in 56 (33.5%) and 37 (22.1%) fecal samples, respectively. Sequences of the RdRp and capsid gene of selected BoNoVs showed that the GIII.1 and GIII.2 genotypes were in circulation in Turkey. Two of the BoNoV strains were identified as recombinant strains (GIII. P1/GIII.2). All examined neboviruses possessed a Nebraska-like RdRp gene. The two nebovirus strains were classified into lineage 4 based on phylogenetic analysis of VP1 amino acid sequences. One of them showed evidence of a recombination event within the S domain. This study is thus the first to reveal the presence of the BoNoV GIII.

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supporting

confidence: 83%

supporting

confidence: 76%

Molecular characterization of bovine noroviruses and neboviruses in Turkey: detection of recombinant strains

Karayel-Hacioglu

Alkan

2019

Arch Virol

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“…Noroviruses are known to cause epidemic and sporadic gastroenteritis in humans and animals (Ferragut et al 2016). Phylogenetically, noroviruses are classified into six genogroups (GI-GVI) based on RNA-dependent RNA polymerase (RdRp) and capsid gene (Pourasgari et al 2018). GI, GII, and GIV infect humans, whereas GIII and GV infect ruminants and rodents, respectively (Thomas et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Molecular surveillance of viral pathogens associated with diarrhea in pre-weaned Korean native calves

Ryu

Shin

Choi

2020

Trop Anim Health Prod

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Calf diarrhea causes severe economic losses in the cattle industry worldwide. This study investigated the prevalence of bovine coronavirus (BCoV), bovine norovirus (BNoV), bovine group A rotavirus (BoRVA), and bovine torovirus (BToV) in calves aged ≤ 60 days, regardless of diarrhea, across nine different regions in the Republic of Korea (ROK) and reported associations between these viruses and diarrhea. Fecal samples were collected rectally from 689 calves: normal (n = 360) and diarrheic (n = 329). BNoV (84/689, 12.2%) was the most prevalent regardless of diarrhea, followed by BCoV (37/689, 5.4%), BToV (15/689, 2.2%), and BoRVA (13/689, 1.9%). Although BCoV (P = 0.032) and BoRVA (P = 0.007) were significantly associated with diarrhea in pre-weaned calves, BNoV and BToV showed no association. Infection by the four pathogens had no relationship with calf age; BoRVA was detected only in calves aged < 30 days, but this finding was not statistically significant. Phylogenetic analysis revealed that BCoV isolates obtained in this study were distinct from the other known BCoVs, and all BNoV isolates belonged to GIII.2 genotype; genetic variations in BNoVs are present in the ROK. BoRVA isolates distributed in the ROK were assigned to G6P[5]. Within the P[5] genotype, our isolates were divided into two lineages: P[5]-III and P[5]-VIII. P[5]-VIII lineage was dominant in pre-weaned Korean native calves. Our BToV isolates were more closely related to a European isolate, B145, than to Japanese isolates. Here, BNoV was frequently identified in calves, suggesting its non-significant contribution to calf diarrhea, whereas BCoV and BoRVA were responsible for calf diarrhea in the ROK. Consequently, our results highlight the importance of rapid diagnosis against these viruses in calf diarrhea.

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“…In pandemic noroviruses strain, the RdRp displays reduced replication fidelity, which results in higher mutation rate and rate of viral evolution compared to the non-pandemic and less frequently detected strains (Bull et al, 2010). Currently, NB-like genotype of NeVs has been detected in 12 countries; and NA1-like strains have been detected in 4 countries (Park et al, 2008;Hassine-Zaafrane et al, 2012;Pourasgari et al, 2018;Turan et al, 2018). It seems that NeVs of different RdRp genotypes are different in prevalence.…”

Section: Strains Yak/nrg17/17/ch and Yak/hy1-2/18/ch Could Represent mentioning

confidence: 99%

“…The VP1 genotype 1 can be further subdivided into four lineages (D'Mello et al, 2009;Guo et al, 2018b). Currently, NB-like strains detected in 12 countries have been the most common genotype in circulation worldwide, and NA1-like strains have been detected in 4 countries (Hassine-Zaafrane et al, 2012;Park et al, 2008;Pourasgari et al, 2018). The VP1 genotype 1 strains have been detected in 9 countries, and genotype 2 strains only have been detected in France and China (Guo et al, 2018c;Kaplon et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

First detection of neboviruses in yak (Bos grunniens) and identification of a novel neboviruses based on complete genome

Guo

Zhou

et al. 2019

Veterinary Microbiology

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Neboviruses (NeVs) is an important causative agent of calf diarrhea. Here, 354 diarrhoeic samples were collected from yak on 55 farms in the Qinghai-Tibet Plateau, China. 22.0% of the diarrhoeic samples were detected as NeVs-positive by RT-PCR assay. Phylogenetic analysis of 78 NeVs RdRp fragments showed that 69 strains were closely related to NB-like strains, and the remaining 9 strains were clustered into an independent branch, which may represent a novel RdRp genotype. Two complete NeVs genomes (YAK/NRG-17/17/CH and YAK/HY1-2/18/ CH) were successfully sequenced with 7459 nt and 7460 nt in length, respectively. The genomes of the two strains only shared 68.1%-69.3% nt identity with all six known NeVs genomes, and phylogenetic trees based on its genome, VP1, RdRp, VP2, P34, NTPase, P30, VPg and 3CLpro proteins suggested that the two strains may represent a novel NeVs strain with novel VP1 genotype and novel RdRp genotype. Notably, 11.5% NeVs strains were screened as the novel NeVs strains based VP1 and RdRp sequences. These novel NeVs strains were detected from 6 farms in two counties, indicating that the novel NeVs has spread in local region. To best of our knowledge, this is the first detection of NeVs in yak. Moreover, a novel NeVs strain was identified based on complete genome. These results contribute to further understand the prevalence and genetic evolution of NeVs.

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Molecular prevalence of bovine noroviruses and neboviruses in newborn calves in Iran

Cited by 18 publications

References 32 publications

Molecular characterization of bovine noroviruses and neboviruses in Turkey: detection of recombinant strains

Molecular characterization of bovine noroviruses and neboviruses in Turkey: detection of recombinant strains

Molecular surveillance of viral pathogens associated with diarrhea in pre-weaned Korean native calves

First detection of neboviruses in yak (Bos grunniens) and identification of a novel neboviruses based on complete genome

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