Detection and characterisation of bovine rotavirus in Ireland from 2006–2008

Collins, P. J.; Mulherin, Emily; Cashman, O.; Lennon, G.; Gunn, Lynda; O’Shea, Helen; Fanning, Séamus

doi:10.1186/2046-0481-67-13

Cited by 18 publications

(19 citation statements)

References 13 publications

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“…Bootstrap values are shown at branch nodes. The Korean isolates identified in this study are indicated by a circle symbol and in bold Badaracco et al 2013;Collins et al 2014;Fukai et al 2004;Park et al 2011). All our isolates detected in this study were assigned to G6P [5].…”

Section: Discussionmentioning

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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Section: Discussionmentioning

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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“…In Brazil, G6P [11] has been incriminated as a cause of a diarrhea outbreak in a beef herd (Medeiros et al 2014a), although there are also reports of its occurrence as the most common genotypic combination in some states of country (Silva et al 2012). In Ireland, G6P[11] is reported as a low prevalence genotypic combination found especially in dairy herds (Collins et al 2014), while in Turkey, Alkan et al (2010) reported a high prevalence of this genotype in either unvaccinated herds and in herds immunized against G6P [1].…”

Section: Discussionmentioning

confidence: 99%

Longitudinal study of bovine rotavirus group A in newborn calves from vaccinated and unvaccinated dairy herds

Rocha

Silva

Gregori

et al. 2017

Trop Anim Health Prod

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Reports of rotavirus excretion in calves usually result from cross-sectional studies, and in face of the conflicting results regarding protection of calves born to vaccinated dams against diarrhea, the aim of the present study was to evaluate rotavirus excretion in dairy calves born to vaccinated or unvaccinated dams, to identify the genotypes of bovine rotavirus group A (RVA) strains isolated from these animals as well as to investigate characteristics of the disease in naturally occurring circumstances throughout the first month of life. Five hundred fifty-two fecal samples were taken from 56 calves, 28 from each farm and, in the vaccinated herd, 11/281 samples (3.91%) taken from six different calves tested positive for RVA while in the unvaccinated herd, 3/271 samples (1.11%) taken from 3 different calves tested positive. The genotyping of the VP7 genes showed 91.2% nucleotide sequence identity to G6 genotype (NCDV strain), and for the VP4 gene, strains from the vaccinated herd were 96.6% related to B223 strain, while strains from the unvaccinated herd were 88% related to P[5] genotype (UK strain). Genotypes found in this study were G6P[11] in the vaccinated herd and G6P[5] in the unvaccinated herd. All calves infected with rotavirus presented an episode of diarrhea in the first month of life, and the discrepancy between the genotypes found in the commercial vaccine (G6P[1] and G10P[11]) and the rotavirus strains circulating in both vaccinated and unvaccinated herds show the importance of keeping constant surveillance in order to avoid potential causes of vaccination failure.

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“…Yamamoto and colleagues (64) considered that their isolates represented reassortment events between bovine-like human rotaviruses and human/feline AU-1-like rotaviruses. G6 is a common genotype in cattle/buffalo (67)(68)(69)(70), sheep (71)(72)(73), and goats (74,75) and has been identified sporadically or at a low prevalence in rabbits (76) and pigs (77,78). It is uncommon in people, and although a zoonotic origin is postulated (64,(79)(80)(81)(82)(83), it has not yet been convincingly proven whether such zoonotic strains spread among people.…”

Section: Discussionmentioning

confidence: 99%