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cross-sectional study of the g and p genotypes of rotavirus a field strains circulating in regularly vaccinated dairy cattle herds.neonatal diarrhea is the main cause of morbidity and mortality in calves up to 30 days old, and rotavirus a (rva) is the main viral etiology. rva vaccines are one of the main tools for diarrhea control in neonates. the aim of this cross-sectional study was to monitor by rt-pcr the g and p genotypes of rva strains identified in dairy cattle herds regularly vaccinated with the rva uk strain (g6p[5]). of the 14 randomly selected herds, two were excluded because no calf was diagnosed with diarrhea o ...201930535644
genetic diversity and zoonotic potential of rotavirus a strains in the southern andean highlands, peru.interspecies transmission is an important mechanism of evolution and contributes to rotavirus a (rva) diversity. in order to evaluate the detection frequency, genetic diversity, epidemiological characteristics and zoonotic potential of rva strains in faecal specimens from humans and animals cohabiting in the same environment in the department of cusco, peru, by molecular analysis, 265 faecal specimens were obtained from alpacas, llamas, sheep and shepherd children, and tested for rva by rt-pcr. ...201931002476
leptospira spp., rotavirus, norovirus, and hepatitis e virus surveillance in a wild invasive golden-headed lion tamarin (leontopithecus chrysomelas; kuhl, 1820) population from an urban park in niterói, rio de janeiro, brazil.the world currently faces severe biodiversity losses caused by anthropogenic activities such as deforestation, pollution, the introduction of exotic species, habitat fragmentation, and climate changes. disease ecology in altered environments is still poorly understood. the golden-headed lion tamarin (ghlt, leontopithecus chrysomelas) is an endangered species that became invasive in an urban park in niterói, rio de janeiro, brazil. the initially few invasive ghlt individuals became hundreds, adap ...201930828830
identification of a novel clade of group a rotaviruses in fatally diseased domestic pigeons in europe.rotaviruses are well-known causative agents of enteric disorders in humans and other mammals, but little is known about their virulence and pathogenic role in pigeons and other birds. starting in summer 2017, a series of outbreaks of an acute disease with high mortalities was reported in domestic pigeons in germany, belgium and denmark. the clinical picture was characterized by diarrhoea, vomiting, hepatic necrosis and sudden fatalities. from these severe outbreaks, we discovered several previou ...201930407742
genotype constellation of a rotavirus a field strain with an uncommon g8p[11] genotype combination in a rotavirus-vaccinated dairy cattle herd.in this report we describe the genotype constellation of a bovine rotavirus a (rva) strain with an uncommon g8p[11] genotype combination. the rva/cow-wt/bra/y136/2017/g8p[11] strain was classified as g8-p[11]-i2-r5-c2-m2-a3-n2-t9-e2-h3. phylogenetic analysis based on the vp7 gene showed that the y136 strain and a human g8p[1] strain comprise a putative new (vii) lineage for the g8 genotype. in addition, two other genotypes, r5 (vp1) and t9 (nsp3), were identified in the constellation of y136 tha ...202032472289
epidemiology and molecular characterization of rotavirus a in fruit bats in bangladesh.rotavirus a (rva) is the primary cause of acute dehydrating diarrhea in human and numerous animal species. animal-to-human interspecies transmission is one of the evolutionary mechanisms driving rotavirus strain diversity in humans. we screened fresh feces from 416 bats (201 pteropus medius, 165 rousettus leschenaultii and 50 taphozous melanopogon) for rva using rrt-pcr. we detected a prevalence of 7% (95% ci 3.5-10.8) and 2% (95% ci 0.4-5.2) in p. medius and r. leschenaultii, respectively. we d ...202032876756
genetic characterisation of novel g29p[14] and g10p[11] rotavirus strains from african buffalo.we report the first description of rotavirus a strains in african buffalo (syncerus caffer). following rna extraction from stool samples, cdna was prepared, followed either by sequence-independent amplification and 454 pyrosequencing or direct sequencing on an illumina miseq platform. rva/buffalo-wt/zaf/4426/2002/g29p[14] exhibited a novel g29p[14] combination and an artiodactyl backbone: i2-r2-c2-m2-a11-n2-t6-e2-h3. rva/buffalo-wt/zaf/1442/2007/g10p[11] also exhibited an artiodactyl backbone: i ...202032693063
prevalence and genomic characteristics of a novel reassortment mammalian orthoreovirus type 2 in diarrhea piglets in sichuan, china.mammalian orthoreovirus (mrv), which can infect almost all mammals, is a zoonotic virus. in this study, six strains of type 2 mrv (mrv2) were isolated from 7 diarrhea piglets from a farm that had an outbreak of diarrhea in piglets in 2018, which tested negative for porcine epidemic diarrhea virus (pedv), porcine transmissible gastroenteritis virus (tgev), porcine deltacoronavirus (pdcov), and porcine group a rotavirus (rav). the mrv2 isolate infected neonatal piglets, in which it induced severe ...202032544614
molecular characterization of group a rotavirus from rhesus macaques (macaca mulatta) at human-wildlife interfaces in bangladesh.group a rotavirus (rva) is an important cause of diarrhoea in people, especially children, and animals globally. due to the segmented nature of the rva genome, animal rva strains have the potential to adapt to the human host through reassortment with other co-infecting human viruses. macaques share food and habitat with people, resulting in close interaction between these two species. this study aimed to detect and characterize rva in rhesus macaques (macaca mulatta) in bangladesh. faecal sample ...202031765042
whole genome sequence analysis of cell culture-adapted rotavirus a strains from chicken.rotavirus a (rva) is a major cause of gastroenteritis in humans and mammalian animals, and has also been abundantly detected in avian species. avian rva infection is associated with diarrhea, reduced growth and increased mortality, leading to economic losses in the poultry industry. avian rva forms a unique genetic clade within the whole rva species. however, up to now, only a few full-length avian rva genomes have been published and only a small number of avian rva strains have been adapted to ...202032147474
first experimental proof of rotavirus a (rva) genotype g18p[17] inducing the clinical presentation of 'young pigeon disease syndrome' (ypds) in domestic pigeons (columba livia).young pigeon disease syndrome (ypds) is characterized as a seasonally occurring, acute and primarily enteric medical condition of mainly juvenile domestic pigeons (columba livia) with highly variable mortality reaching more than 50%. although the syndrome has been known in europe for almost three decades, its aetiology remains largely obscure. recently, a previously unknown pigeon-associated clade of rotavirus a (rva) genotype g18p[17] was detected in europe and australia in association with fat ...202031967734
genome constellations of rotavirus a isolated from avian species in brazil, 2008-2015.rotaviruses are members of the family reoviridae and are a common cause of acute diarrhea in many mammalian and avian species. they are non-enveloped icosahedral particles and their genome comprises 11 segments of double-stranded rna, which encodes six structural proteins (vp1-4, vp6-7) and six nonstructural proteins (nsp1-6). genotypes are defined based upon the diversity found in these genes and viral characterization plays a central role on epidemiological studies and prevention. here we inve ...202032378061
molecular detection of human adenovirus and rotavirus in feces of white-eared opossums.the white-eared opossums (didelphis albiventris) is the largest brazilian marsupial and a great example of animal synanthropy. considering the high potential as a carrier of viruses originating from environmental contamination, the presence of human adenovirus (adv) and rotavirus was investigated in the feces of rescued white-eared opossums, which were in the process of rehabilitation. the feces of 49 animals were initially investigated by immunochromatography, with three samples positive for ad ...202033236325
a reassortant g3p12 rotavirus a strain associated with severe enteritis in donkeys (equus asinus).in contrast to horses, the only evidence suggesting gastrointestinal disease in neonatal donkeys is associated with group a rotaviruses (rvas) is the detection of viral antigens by elisa in just 1 of 82 symptomatic donkey foals. no additional, more comprehensive investigations have been conducted, and rvas if circulating in donkey populations have not been molecularly characterised.202133455000
enteric viral infections among domesticated south american camelids: first detection of mammalian orthoreovirus in camelids.enteric infections are a major cause of neonatal death in south american camelids (sacs). the aim of this study was to determine the prevalence of enteric viral pathogens among alpacas and llamas in canchis, cuzco, located in the southern peruvian highland. fecal samples were obtained from 80 neonatal alpacas and llamas and tested for coronavirus (cov), mammalian orthoreovirus (mrv), and rotavirus a (rva) by rt-pcr. of the 80 fecal samples analyzed, 76 (95%) were positive for at least one of the ...202134069466
molecular characterization of group a rotavirus strains detected in alpacas (vicugna pacos) from peru.the alpaca is a very important social and economic resource for the production of fibre and meat for andean communities. peru is the main producer of alpacas. group a rotavirus (rva) has been sporadically detected in alpacas. in this study, a total of 1423 faecal samples from alpacas from different locations of the puno department in peru were collected and analysed by an antigen-capture elisa in order to detect rva. four per cent of the samples were rva-positive (57/1423). the genotype constell ...202133830912
a remarkable genetic diversity of rotavirus a circulating in red fox population in croatia.rotaviruses (rv), especially rotavirus a (rva), are globally recognized as pathogens causing neonatal diarrhea, but they also affect intensive animal farming. however, the knowledge on their significance in wildlife is rather limited. the aim of the study was to unveil the prevalence, molecular epidemiology, and genetic diversity of rva strains circulating in the red fox (vulpes vulpes) population in croatia. from 2018 to 2019, 370 fecal samples from fox carcasses hunted for rabies monitoring we ...202133923799
pigeon rotavirus a genotype g18p17-associated disease outbreaks after fancy pigeon shows in germany - a case series.pigeon rotavirus a (rva) isolates of genotype g18p[17] are causing disease outbreaks and fatalities in pigeon lofts in australia, germany, belgium, denmark and usa since 2016. most disease outbreaks have been reported from juvenile pigeons (columba livia forma domestica). however, reports on rva-associated disease outbreaks in fancy pigeons in connection with fancy pigeon shows in germany are rare.202133588462
kobuvirus detection in the critically endangered pygmy hog (porcula salvania), india.pygmy hogs (porcula salvania) are the smallest and rarest wild suid. it is categorized as a critically endangered species as per the red list of the international union for conservation of nature. this study reports the first detection of a single-stranded rna virus species, aichivirus c, belonging to the genus kobuvirus (kobv) and the family picornaviridae, in pygmy hogs. kobv species are identified as a cause of acute gastroenteritis among children in india. as of now, there exists no report o ...202133827197
presence and diversity of different enteric viruses in wild norway rats (rattus norvegicus).rodents are common reservoirs for numerous zoonotic pathogens, but knowledge about diversity of pathogens in rodents is still limited. here, we investigated the occurrence and genetic diversity of enteric viruses in 51 norway rats collected in three different countries in europe. rna of at least one virus was detected in the intestine of 49 of 51 animals. astrovirus rna was detected in 46 animals, mostly of rat astroviruses. human astrovirus (hastv-8) rna was detected in one, rotavirus group a ( ...202134073462
rotavirus a infection in pre- and post-vaccine period: risk factors, genotypes distribution by vaccination status and age of children in nampula province, northern mozambique (2015-2019).mozambique introduced the monovalent rotavirus vaccine (rotarix®, gsk biologicals, rixensart, belgium) in september 2015. previous analysis, showed that nampula province continues reporting a high frequency of rotavirus a (rva) infection and the emergence of g9p[6], g9p[4] and g3p[4] genotypes. this analysis aimed to determine the rva frequency; risk factors; genotype distribution by vaccination status and age between pre- and post-vaccine periods in children under-five years old with diarrhea i ...202134358275
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