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https://www.readbyqxmd.com/read/28100623/temperature-sensitive-lesion-in-the-n-terminal-domain-of-the-rotavirus-polymerase-affects-its-intracellular-localization-and-enzymatic-activity
#1
Allison O McKell, Leslie E W LaConte, Sarah M McDonald
: Temperature-sensitive (ts) mutants of simian rotavirus (RV) strain SA11 have been previously created to investigate the functions of viral proteins during replication. One mutant, SA11-tsC, maps to the gene encoding the VP1 polymerase and shows diminished growth and RNA synthesis at 39°C as compared to 31°C. In the current study, we sequenced all 11 genes of SA11-tsC, confirming the presence of an L138P mutation in the VP1 N-terminal domain and identifying 52 additional mutations in four other viral proteins (VP7, VP4, NSP2, and NSP1)...
January 18, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28099492/priming-cross-protective-bovine-viral-diarrhea-virus-specific-immunity-using-live-vectored-mosaic-antigens
#2
Shehnaz Lokhandwala, Xin Fang, Suryakant D Waghela, Jocelyn Bray, Leo M Njongmeta, Andy Herring, Karim W Abdelsalam, Christopher Chase, Waithaka Mwangi
Bovine viral diarrhea virus (BVDV) plays a key role in bovine respiratory disease complex, which can lead to pneumonia, diarrhea and death of calves. Current vaccines are not very effective due, in part, to immunosuppressive traits and failure to induce broad protection. There are diverse BVDV strains and thus, current vaccines contain representative genotype 1 and 2 viruses (BVDV-1 & 2) to broaden coverage. BVDV modified live virus (MLV) vaccines are superior to killed virus vaccines, but they are susceptible to neutralization and complement-mediated destruction triggered by passively acquired antibodies, thus limiting their efficacy...
2017: PloS One
https://www.readbyqxmd.com/read/28099077/disease-complexity-in-a-declining-alaskan-muskox-ovibos-moschatus-population
#3
Josephine A Afema, Kimberlee B Beckmen, Stephen M Arthur, Kathy Burek Huntington, Jonna A K Mazet
The muskox ( Ovibos moschatus ) population inhabiting the eastern North Slope (ENS) of Alaska declined dramatically during 1999-2006, whereas populations in western Alaska (WA) were stable or increasing. To understand morbidity and mortality factors contributing to the decline, Alaska Department of Fish and Game conducted pathologic investigations of carcasses from 2005 until 2008. Additionally, archived sera from both ENS and WA muskoxen collected during 1984-1992, before the documented beginning of the ENS decline; sera collected during 2000, near the beginning of the decline; and contemporary sera (from live capture-release, adult females) collected during 2006, 2007, and 2008 were analyzed to determine whether prevalence of antibody to potential pathogens differed in the two areas or changed over time...
January 18, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/28095455/novel-porcine-epidemic-diarrhea-virus-pedv-variants-with-large-deletions-in-the-spike-s-gene-coexist-with-pedv-strains-possessing-an-intact-s-gene-in-domestic-pigs-in-japan-a-new-disease-situation
#4
Nguyen Van Diep, Junzo Norimine, Masuo Sueyoshi, Nguyen Thi Lan, Ryoji Yamaguchi
Since late 2013, after an absence of seven years, outbreaks of porcine epidemic diarrhea virus (PEDV) infection have reemerged and swept rapidly across Japan, resulting in significant economic losses. In this study, we report the emergence, mixed infection, and genetic characterization of 15 novel field PEDV variants with large genomic deletions. The sizes of deletion varied between 582 nt (194 aa) and 648 nt (216 aa) at positions 28-714 (10-238) on the S gene (protein). Among 17 PEDV samples isolated from individual pigs, all of them contained at least two distinct genotypes with large genomic deletions, and 94...
2017: PloS One
https://www.readbyqxmd.com/read/28092611/prevalence-of-bovine-herpesvirus-type-4-in-aborting-dairy-cows
#5
Đ Cvetojević, B Savić, V Milićević, B Kureljušić, N Jezdimirović, D Jakić-Dimić, M Pavlović, Lj Spalević
Bovine herpesvirus type 4 (BHV-4) is related to many different conditions: infertility, postpartal metritis, vulvovaginitis, mastitis, encephalitis, calf pneumonia, keratoconjunctivitis, cutaneous lesions, digital dermatitis and abortion. In this study a retrospective PCR examination of 100 extracted DNA samples from aborting cows was performed in order to determine: prevalence of BHV-4 in abortive cattle, whether coinfections BHV-4 with other abortifacient pathogens are present in the same sample and to determine the month of gestation when BHV-4 associated abortions were detected...
December 1, 2016: Polish Journal of Veterinary Sciences
https://www.readbyqxmd.com/read/28087494/porcine-kobuvirus-1-in-healthy-and-diarrheic-pigs-genetic-detection-and-characterization-of-virus-and-co-infection-with-rotavirus-a
#6
Anna Jackova, Ivan Sliz, Rene Mandelik, Slavomira Salamunova, Jaroslav Novotny, Mariana Kolesarova, Michaela Vlasakova, Stefan Vilcek
The porcine kobuvirus 1 (PKV-1) is believed to be an enteric virus. To investigate the prevalence of PKV-1 in pigs, virus was detected by RT-PCR in rectal swabs originating from 414 healthy and diarrheic pigs of different age categories on farms in Slovakia. Among all ages of animals, PKV-1 was detected equally in diarrheic (63.8%) and clinically healthy (62.9%) pigs. PKV-1 was more often detected in diarrheic (74.6%) than in healthy (64.4%) suckling piglets (<28days) but data was not statistically significant...
January 10, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28074709/a-serosurvey-for-ruminant-pestivirus-exposure-conducted-using-cattle-sera-collected-for-brucellosis-surveillance-in-the-united-states
#7
Fernando V Bauermann, Julia F Ridpath, David A Dargatz
Four species of ruminant pestivirus are currently circulating in the United States: Bovine viral diarrhea virus 1 and 2 (BVDV-1, -2; predominant host: cattle), Border disease virus (BDV; predominant host: sheep), and pronghorn virus (sporadically detected in wild ruminants). A third bovine pestivirus called HoBi-like virus has been detected in cattle and water buffalo in South America, Asia, and Europe. To date, no isolations of HoBi-like viruses from U.S. cattle have been reported. To assess exposure, 2,000 cattle sera, collected between 2014 and 2015 as part of the U...
January 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28070089/development-of-a-one-run-real-time-pcr-detection-system-for-pathogens-associated-with-bovine-respiratory-disease-complex
#8
Mai Kishimoto, Shinobu Tsuchiaka, Sayed Samim Rahpaya, Ayako Hasebe, Keiko Otsu, Satoshi Sugimura, Suguru Kobayashi, Natsumi Komatsu, Makoto Nagai, Tsutomu Omatsu, Yuki Naoi, Kaori Sano, Sachiko Okazaki-Terashima, Mami Oba, Yukie Katayama, Reiichiro Sato, Tetsuo Asai, Tetsuya Mizutani
Bovine respiratory disease complex (BRDC) is frequently found in cattle worldwide. The etiology of BRDC is complicated by infections with multiple pathogens, making identification of the causal pathogen difficult. Here, we developed a detection system by applying TaqMan real-time PCR (Dembo respiratory-PCR) to screen a broad range of microbes associated with BRDC in a single run. We selected 16 bovine respiratory pathogens (bovine viral diarrhea virus, bovine coronavirus, bovine parainfluenza virus 3, bovine respiratory syncytial virus, influenza D virus, bovine rhinitis A virus, bovine rhinitis B virus, bovine herpesvirus 1, bovine adenovirus 3, bovine adenovirus 7, Mannheimia haemolytica, Pasteurella multocida, Histophilus somni, Trueperella pyogenes, Mycoplasma bovis and Ureaplasma diversum) as detection targets and designed novel specific primer-probe sets for nine of them...
January 8, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28067684/diarrhea-after-allogeneic-stem-cell-transplantation-beyond-graft-versus-host-disease
#9
Katarzyna Robak, Joanna Zambonelli, Jaroslaw Bilinski, Grzegorz W Basak
Diarrhea constitutes a frequent and often debilitating complication of allogeneic hematopoietic cell transplantation (alloHCT). Especially when accompanied by jaundice, skin rash, and symptoms of the upper gastrointestinal tract, diarrhea strongly suggests emergence of acute graft-versus-host disease (GvHD), which is a serious immune complication of the procedure, with possible fatal consequences. However, especially when diarrhea occurs as an isolated symptom, the other causes must be excluded before initiation of GvHD treatment with immune-suppressive drugs...
January 6, 2017: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28063924/diversity-in-vp3-nsp3-and-nsp4-of-rotavirus-b-detected-from-japanese-cattle
#10
Michiko Hayashi-Miyamoto, Toshiaki Murakami, Fujiko Minami-Fukuda, Shinobu Tsuchiaka, Mai Kishimoto, Kaori Sano, Yuki Naoi, Keigo Asano, Toru Ichimaru, Kei Haga, Tsutomu Omatsu, Yukie Katayama, Mami Oba, Hiroshi Aoki, Junsuke Shirai, Motohiko Ishida, Kazuhiko Katayama, Tetsuya Mizutani, Makoto Nagai
Bovine rotavirus B (RVB) is an etiological agent of diarrhea mostly in adult cattle. Currently, a few sequences of viral protein (VP)1, 2, 4, 6, and 7 and nonstructural protein (NSP)1, 2, and 5 of bovine RVB are available in the DDBJ/EMBL/GenBank databases, and none have been reported for VP3, NSP3, and NSP4. In order to fill this gap in the genetic characterization of bovine RVB strains, we used a metagenomics approach and sequenced and analyzed the complete coding sequences (CDS) of VP3, NSP3, and NSP4 genes, as well as the partial or complete CDS of other genes of RVBs detected from Japanese cattle...
January 4, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28056276/-infection-status-clinical-symptoms-and-gene-type-transition-of-group-a-rotavirus-in-children-less-than-five-years-of-age-with-diarrhea-in-sentinel-hospitals-of-henan-province-china
#11
J Y Zhao, X J Shen, S L Xia, B F Zhang, Y J Mu, X Y Huang, B L Xu
Objective: To investigate the infectious status, gene type transition and epidemiological features of rotavirus A isolated from infants and children (<59 months-of-age) in sentinel hospitals from 2008 to 2015 in Henan province, China. Methods: In total, 2 541 stool samples (each 3- 5 ml) were collected from infants and children aged less than five years in two sentinel hospitals and group A rotavirus was detected by a double antibody sandwich ELISA. Viral RNA was extracted from positive samples and G/P gene typing was performed using a two-step nested multiplex RT-PCR...
January 6, 2017: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/28045037/nucleocapsid-interacts-with-npm1-and-protects-it-from-proteolytic-cleavage-enhancing-cell-survival-and-is-involved-in-pedv-growth
#12
Da Shi, Hongyan Shi, Dongbo Sun, Jianfei Chen, Xin Zhang, Xiaobo Wang, Jialin Zhang, Zhaoyang Ji, Jianbo Liu, Liyan Cao, Xiangdong Zhu, Jing Yuan, Hui Dong, Xin Wang, Tiecheng Chang, Ye Liu, Li Feng
Porcine epidemic diarrhea virus (PEDV) replicates in the cytoplasm of infected cells, but its nucleocapsid (N) protein localizes specifically to the nucleolus. The mechanism of nuclear translocation, and whether N protein associates with particular nucleolar components, is unknown. In this study, we confirm that a nucleolar phosphoprotein nucleophosmin (NPM1) interacts and co-localizes with the N protein in the nucleolus. In vitro binding studies indicated that aa 148-294 of N and aa 118-188 of NPM1 were required for binding...
January 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28040270/a-systematic-review-of-financial-and-economic-assessments-of-bovine-viral-diarrhea-virus-bvdv-prevention-and-mitigation-activities-worldwide
#13
REVIEW
Beate Pinior, Clair L Firth, Veronika Richter, Karin Lebl, Martine Trauffler, Monika Dzieciol, Sabine E Hutter, Johann Burgstaller, Walter Obritzhauser, Petra Winter, Annemarie Käsbohrer
Infection with bovine viral diarrhea virus (BVDV) results in major economic losses either directly through decreased productive performance in cattle herds or indirectly, such as through expenses for control programs. The aim of this systematic review was to review financial and/or economic assessment studies of prevention and/or mitigation activities of BVDV at national, regional and farm level worldwide. Once all predefined criteria had been met, 35 articles were included for this systematic review. Studies were analyzed with particular focus on the type of financially and/or economically-assessed prevention and/or mitigation activities...
December 23, 2016: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28018330/porcine-epidemic-diarrhea-virus-shedding-and-antibody-response-in-swine-farms-a-longitudinal-study
#14
Cristina Bertasio, Enrico Giacomini, Massimiliano Lazzaro, Simona Perulli, Alice Papetti, Antonio Lavazza, Davide Lelli, Giovanni Alborali, Maria B Boniotti
The porcine epidemic diarrhea virus (PEDV) causes an acute and highly contagious enteric disease characterized by severe enteritis, vomiting, watery diarrhea, and a high mortality rate in seronegative neonatal piglets. In the last few years, PED had a large economic impact on the swine industries in Asia and the US, and in 2014, the PEDV also re-emerged in Europe. Two main PEDV variants circulate worldwide but only the S INDEL variant, considered a mild strain, is spreading in Europe. To gain insights into the pathogenicity of this variant, its viral load and temporal shedding pattern were evaluated in piglets from infected farms...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28011610/characteristics-and-outcomes-of-pediatric-patients-with-ebola-virus-disease-admitted-to-treatment-units-in-liberia-and-sierra-leone-a-retrospective-cohort-study
#15
Michael A Smit, Ian C Michelow, Justin Glavis-Bloom, Vanessa Wolfman, Adam C Levine
BACKGROUND: The clinical and virologic characteristics of Ebola virus disease (EVD) in children have not been thoroughly documented. METHODS: Consecutive children aged <18 years with real-time polymerase chain reaction (RT-PCR)-confirmed EVD were enrolled retrospectively in 5 Ebola treatment units in Liberia and Sierra Leone in 2014/2015. Data collection and medical management were based on standardized International Medical Corps protocols. We performed descriptive statistics, multivariate logistic regression, and Kaplan-Meier survival analyses...
February 1, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28004252/genomic-characterization-of-a-bovine-viral-diarrhea-virus-subtype-1i-in-brazil
#16
Ana Cristina S Mósena, Matheus N Weber, Samuel P Cibulski, Simone Silveira, Mariana S Silva, Fabiana Q Mayer, Cláudio W Canal
Bovine viral diarrhea virus 1 (BVDV-1) belongs to the genus Pestivirus within the family Flaviviridae. Based on the 5' untranslated region (UTR) sequence, BVDV-1 can be divided into at least 17 subtypes (1a though 1q). BVDV-1i is an uncommon subtype that has been reported in the United Kingdom and Uruguay. Here, we report the complete genome sequence of the first subtype 1i BVDV-1 (strain ACM/BR/2016) isolated from cattle in southern Brazil. The genome is 12,231 nt in length and contains a single ORF that encodes a polyprotein of 3,896 amino acids, flanked by 5' and 3'UTRs of 325 and 220 nt, respectively...
December 21, 2016: Archives of Virology
https://www.readbyqxmd.com/read/27998276/methodological-challenges-to-multivariate-syndromic-surveillance-a-case-study-using-swiss-animal-health-data
#17
Flavie Vial, Wei Wei, Leonhard Held
BACKGROUND: In an era of ubiquitous electronic collection of animal health data, multivariate surveillance systems (which concurrently monitor several data streams) should have a greater probability of detecting disease events than univariate systems. However, despite their limitations, univariate aberration detection algorithms are used in most active syndromic surveillance (SyS) systems because of their ease of application and interpretation. On the other hand, a stochastic modelling-based approach to multivariate surveillance offers more flexibility, allowing for the retention of historical outbreaks, for overdispersion and for non-stationarity...
December 20, 2016: BMC Veterinary Research
https://www.readbyqxmd.com/read/27992789/analysis-of-aichi-virus-and-saffold-virus-association-with-pediatric-acute-gastroenteritis
#18
Li-Li Li, Na Liu, Jei-Mei Yu, Yuan-Yun Ao, Shan Li, O Colin Stine, Zhao-Jun Duan
BACKGROUND: Aichi virus (AiV) and Saffold virus (SAFV) have been reported in children with acute gastroenteritis and respiratory disease worldwide; however, their causative role in acute gastroenteritis remains ambiguous. OBJECTIVES: To assess the clinical association of AiV and SAFV with acute gastroenteritis in the pediatric population. STUDY DESIGN: A case-control study involving 461 paired stool samples from pediatric cases with diarrhea and healthy controls was conducted in China...
December 12, 2016: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/27987206/zika-virus-is-not-thermostable-very-effective-virus-inactivation-during-heat-treatment-pasteurization-of-human-serum-albumin
#19
Maria R Farcet, Thomas R Kreil
BACKGROUND: The ongoing Zika virus (ZIKV) outbreak in the Americas has also raised concerns around the potential for ZIKV transmission via blood products. Plasma-derived products are considered safe, because effective viral-inactivation and removal methods are implemented in their manufacturing processes. However, a recent study has indicated that ZIKV is "thermally stable" compared with the closely related Dengue virus, thus raising the question of whether heat treatments, as embedded in the manufacturing of plasma-derived products, are as effective against ZIKV as was previously shown for other Flaviviruses...
December 17, 2016: Transfusion
https://www.readbyqxmd.com/read/27987110/prevalence-and-molecular-characterization-of-porcine-picobirnavirus-in-piglets-of-north-east-region-of-india
#20
H Kylla, T K Dutta, P Roychoudhury, Y S Malik, R Mandakini, P K Subudhi
Picobirnaviruses (PBVs) have been recognized as one of the important causal viral agents of gastroenteritis in several animal species especially in young immunocompromised hosts. In this study, we report the prevalence and molecular epidemiology of porcine PBVs from North Eastern Hilly region of India. A total of 457 fecal samples from piglets were collected from local (n = 130) and cross (n = 327) breed piglets in different seasons for 2 years. All the samples were subjected to RNA-PAGE and RT-PCR analysis for detection of PBVs...
December 16, 2016: Tropical Animal Health and Production
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