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https://www.readbyqxmd.com/read/28864657/recovery-optimization-and-survival-of-human-norovirus-surrogates-feline-calicivirus-and-murine-norovirus-on-carpet
#1
David Buckley, Angela Fraser, Guohui Huang, Xiuping Jiang
Carpet been attributed to prolonged and reoccurring outbreaks of human noroviruses (HuNoV), the leading cause of acute gastroenteritis worldwide. Viral recovery from environmental surfaces, such as carpet, remains undeveloped. Our aim was to determine survival of HuNoV surrogates on an understudied environmental surface, carpet. First, we measured the zeta potential and absorption capacity of wool and nylon carpet fibers, then developed a mini-spin column elution method (MSC), and lastly characterized the survival of HuNoV surrogates, feline calicivirus (FCV) and murine norovirus (MNV), over 60 days under 30 and 70% relative humidity (RH) on two types of carpet and one glass surface...
September 1, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28815386/genomic-characterization-of-a-novel-calicivirus-fhmcv-2012-from-baitfish-in-the-usa
#2
Sunil Kumar Mor, Nicholas B D Phelps, Terry Fei Fan Ng, Kuttichantran Subramaniam, Alexander Primus, Anibal G Armien, Rebekah McCann, Corey Puzach, Thomas B Waltzek, Sagar M Goyal
During regulatory sampling of fathead minnows (Pimephales promelas), a novel calicivirus was isolated from homogenates of kidney and spleen inoculated into bluegill fry (BF-2) cells. Infected cell cultures exhibiting cytopathic effects were screened by PCR-based methods for selected fish viral pathogens. Illumina HiSeq next generation sequencing of the total RNA revealed a novel calicivirus genome that showed limited protein sequence similarity to known homologs in a BLASTp search. The complete genome of this fathead minnow calicivirus (FHMCV) is 6564 nt long, encoding a polyprotein of 2114 aa in length...
August 16, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28790989/a-proposal-for-a-structural-model-of-the-feline-calicivirus-protease-bound-to-the-substrate-peptide-under-physiological-conditions
#3
Masaru Yokoyama, Tomoichiro Oka, Hirotaka Takagi, Hirotatsu Kojima, Takayoshi Okabe, Tetsuo Nagano, Yukinobu Tohya, Hironori Sato
Feline calicivirus (FCV) protease functions to cleave viral precursor proteins during productive infection. Previous studies have mapped a protease-coding region and six cleavage sites in viral precursor proteins. However, how the FCV protease interacts with its substrates remains unknown. To gain insights into the interactions, we constructed a molecular model of the FCV protease bound with the octapeptide containing a cleavage site of the capsid precursor protein by homology modeling and docking simulation...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28783534/frequency-of-hepatitis-e-virus-rotavirus-and-porcine-enteric-calicivirus-at-various-stages-of-pork-carcass-processing-in-two-pork-processing-plants
#4
Tineke H Jones, Victoria Muehlhauser
Hepatitis E virus (HEV), rotavirus (RV), and porcine enteric calicivirus (PEC) infections are common in swine and raises concerns about the potential for zoonotic transmission through undercooked meat products. Enteric viruses can potentially contaminate carcasses during meat processing operations. There is a lack of information on the prevalence and control of enteric viruses in the pork processing chain. This study compared the incidence and levels of contamination of hog carcasses with HEV, RV and PEC at different stages of the dressing process...
July 29, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28766060/noroviruses-and-sapoviruses-associated-with-acute-gastroenteritis-in-pediatric-patients-in-thailand-increased-detection-of-recombinant-norovirus-gii-p16-gii-13-strains
#5
Pattara Khamrin, Kattareeya Kumthip, Kanittapon Supadej, Aksara Thongprachum, Shoko Okitsu, Satoshi Hayakawa, Hiroshi Ushijima, Niwat Maneekarn
Enteric caliciviruses, including noroviruses (NoVs) and sapoviruses (SaVs), are recognized as important etiologic agents of acute gastroenteritis (AGE) with considerable genetic diversity. In order to gain an overview of the molecular epidemiology of human NoVs and SaVs in children hospitalized with AGE in Chiang Mai, Thailand, a total of 889 fecal specimens were collected from 2012 to 2014 and screened for NoVs and SaVs. Out of 889 fecal specimens, 154 (17.3%) and 6 (0.7%) were positive for NoV GII isolates and SaV, respectively...
August 1, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28763035/a-motif-in-the-f-homomorph-of-rabbit-haemorrhagic-disease-virus-polymerase-is-important-for-the-subcellular-localisation-of-the-protein-and-its-ability-to-induce-redistribution-of-golgi-membranes
#6
Nadya Urakova, Andrew C Warden, Peter A White, Tanja Strive, Michael Frese
Rabbit haemorrhagic disease virus (RHDV) is a calicivirus that infects and frequently kills rabbits. Previously, we showed that the RHDV RNA-dependent RNA polymerase (RdRp) is associated with distinct, but yet uncharacterised subcellular structures and is capable of inducing a redistribution of Golgi membranes. In this study, we identified a partially hidden hydrophobic motif that determines the subcellular localisation of recombinant RHDV RdRp in transfected cells. This novel motif, 189LLWGCDVGVAVCAAAVFHNICY210, is located within the F homomorph, between the conserved F3 and A motifs of the core RdRp domain...
August 1, 2017: Viruses
https://www.readbyqxmd.com/read/28757394/broad-spectrum-non-nucleoside-inhibitors-for-caliciviruses
#7
Natalie E Netzler, Daniel Enosi Tuipulotu, Auda A Eltahla, Jennifer H Lun, Salvatore Ferla, Andrea Brancale, Nadya Urakova, Michael Frese, Tanja Strive, Jason M Mackenzie, Peter A White
Viruses of the Caliciviridae cause significant and sometimes lethal diseases, however despite substantial research efforts, specific antivirals are lacking. Broad-spectrum antivirals could combat multiple viral pathogens, offering a rapid solution when no therapies exist. The RNA-dependent RNA polymerase (RdRp) is an attractive antiviral target as it is essential for viral replication and lacks mammalian homologs. To focus the search for pan-Caliciviridae antivirals, the RdRp was probed with non-nucleoside inhibitors (NNIs) developed against hepatitis C virus (HCV) to reveal both allosteric ligands for structure-activity relationship enhancement, and highly-conserved RdRp pockets for antiviral targeting...
July 27, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28749292/molecular-detection-of-infectious-pathogens-of-the-upper-respiratory-tract-in-captive-nondomestic-felids
#8
Valéria M Lara, Julia C Benassi, Shayne P Bisetto, Trícia M de Oliveira, Helena L Ferreira, João P Araújo Júnior, Adriano B Carregaro
Upper respiratory tract disease is a complex infectious disease process with multiple pathogens involved. Identification of infectious agents in wild animals is of great importance for wildlife conservation. The aim of this study was to evaluate the molecular detection of feline herpesvirus type 1, feline calicivirus (FCV), Bordetella bronchiseptica , Chlamydophila felis , and Mycoplasma felis using ocular and nasal swabs in three species of captive nondomestic felids. Mycoplasma felis was detected in two ocular samples of Puma concolor and in one nasal sample of one Panthera onca ...
June 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28736804/study-of-the-association-between-histo-blood-group-antigens-and-norovirus-infection-in-chinese-children
#9
Zhu-Lun Zhuang, Yu Jin, Kun-Long Yan, Wei-Xia Cheng
Human caliciviruses (HuCVs) have been recognized as a major cause of sporadic viral diarrhea in children, among which norovirus genotype GII.4 is the most prevalent genotype. Stool and saliva samples were collected from 295 children with acute diarrhea and 150 asymptomatic children at a hospital in China. The HuCV detection rate was 10.85% (32/295) among the children with acute diarrhea, and all of these 32 children were either HBGA secretors (12/32) or partial secretors (20/32). HuCV was detected in two (1...
July 24, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28691897/intranasal-immunization-with-inactivated-feline-calicivirus-particles-confers-robust-protection-against-homologous-virus-and-suppression-against-heterologous-virus-in-cats
#10
Hiroaki Sato, Go Sehata, Nobutaka Okada, Kayo Iwamoto, Katsuo Masubuchi, Risa Kainuma, Tatsuki Noda, Tatsuhiko Igarashi, Takuo Sawada, Taichi Noro, Eiji Oishi
The protective efficacy of intranasal (IN) administration of inactivated feline calicivirus (FCV) vaccine against homologous or heterologous FCV infection was investigated. Groups of cats immunized with the experimental inactivated, non-adjuvanted FCV vaccine via either the IN or subcutaneous (SC) route were exposed to homologous or highly heterologous FCV. Both the IN and SC immunization protocols established robust protection against homologous FCV infection. Although neither immunization regimen conferred protection against the heterologous strain, clinical scores and virus titres of oral swabs were lower in cats in the IN group compared to those in the SC group, accompanying a faster neutralizing antibody response against the heterologous virus in cats in the IN group...
July 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28677421/molecular-detection-of-viral-agents-in-free-ranging-and-captive-neotropical-felids-in-brazil
#11
Mariana Malzoni Furtado, Sueli Akemi Taniwaki, Iracema Nunes de Barros, Paulo Eduardo Brandão, José Luiz Catão-Dias, Sandra Cavalcanti, Laury Cullen, Claudia Filoni, Anah Tereza de Almeida Jácomo, Rodrigo Silva Pinto Jorge, Nairléia Dos Santos Silva, Leandro Silveira, José Soares Ferreira Neto
We describe molecular testing for felid alphaherpesvirus 1 (FHV-1), carnivore protoparvovirus 1 (CPPV-1), feline calicivirus (FCV), alphacoronavirus 1 (feline coronavirus [FCoV]), feline leukemia virus (FeLV), feline immunodeficiency virus (FIV), and canine distemper virus (CDV) in whole blood samples of 109 free-ranging and 68 captive neotropical felids from Brazil. Samples from 2 jaguars ( Panthera onca) and 1 oncilla ( Leopardus tigrinus) were positive for FHV-1; 2 jaguars, 1 puma ( Puma concolor), and 1 jaguarundi ( Herpairulus yagouaroundi) tested positive for CPPV-1; and 1 puma was positive for FIV...
July 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28642746/virucidal-activity-of-fogged-chlorine-dioxide-and-hydrogen-peroxide-based-disinfectants-against-human-norovirus-and-its-surrogate-feline-calicivirus-on-hard-to-reach-surfaces
#12
Naim Montazeri, Clyde Manuel, Eric Moorman, Janak R Khatiwada, Leonard L Williams, Lee-Ann Jaykus
Human norovirus (NoV) is the leading cause of foodborne illnesses in the United States. Norovirus is shed in high numbers in the feces and vomitous of infected individuals. Contact surfaces contaminated with bodily fluids harboring infectious virus particles serve as vehicles for pathogen transmission. Environmental stability of NoV and its resistance to many conventional disinfectants necessitate effective inactivation strategies to control the spread of virus. We investigated the efficacy of two commercial disinfectants, hydrogen peroxide (7...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28625542/analysis-of-the-codon-usage-of-the-orf2-gene-of-feline-calicivirus
#13
Minghui Zang, Wanting He, Fanshu Du, Gongjian Wu, Bohao Wu, Zhenlei Zhou
Feline calicivirus (FCV) is a highly prevalent pathogen of the domestic cat that causes acute infections of the oral and upper respiratory tract. The E region of the ORF2 protein is responsible for the induction of virus-neutralizing antibodies, thus it is important to understand the codon usage of this gene. Here, analysed 90 coding sequences of ORF2 and show that it undergoes a low codon usage bias. In addition, although mutational bias is one of the factors shaping the codon usage bias of this gene, natural selection plays a more significant role...
June 16, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28602163/investigation-of-a-food-borne-outbreak-of-gastroenteritis-in-a-school-canteen-revealed-a-variant-of-sapovirus-genogroup-v-not-detected-by-standard-pcr-sollentuna-sweden-2016
#14
Maria-Pia Hergens, Joanna Nederby Öhd, Erik Alm, Helena H Askling, Sofia Helgesson, Mona Insulander, Nina Lagerqvist, Bo Svenungsson, Malin Tihane, Thomas Tolfvenstam, Per Follin
A food-borne outbreak of gastroenteritis with more than 650 suspected cases occurred in April 2016 in Sollentuna, Sweden. It originated in a school kitchen serving a total of 2,700 meals daily. Initial microbiological testing (for Campylobacter, Salmonella, Shigella, Yersinia, Giardia, Cryptosporidium, Entamoeba histolytica, adeno-, astro-, noro-, rota- and sapovirus) of stool samples from 15 symptomatic cases was negative, despite a clinical presentation suggestive of calicivirus. Analyses of the findings from both the Sollentuna municipality environmental team and a web-based questionnaire suggested that the source of the outbreak was the salad buffet served on 20 April, although no specific food item could be identified...
June 1, 2017: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/28589743/rapid-and-sensitive-insulated-isothermal-pcr-for-point-of-need-feline-leukaemia-virus-detection
#15
Rebecca P Wilkes, Eman Anis, Dawn Dunbar, Pei-Yu A Lee, Yun-Long Tsai, Fu-Chun Lee, Hsiao-Fen G Chang, Hwa-Tang T Wang, Elizabeth M Graham
Objectives Feline leukaemia virus (FeLV), a gamma retrovirus, causes diseases of the feline haematopoietic system that are invariably fatal. Rapid and accurate testing at the point-of-need (PON) supports prevention of virus spread and management of clinical disease. This study evaluated the performance of an insulated isothermal PCR (iiPCR) that detects proviral DNA, and a reverse transcription (RT)-iiPCR that detects both viral RNA and proviral DNA, for FeLV detection at the PON. Methods Mycoplasma haemofelis, feline coronavirus, feline herpesvirus, feline calicivirus and feline immunodeficiency virus were used to test analytical specificity...
June 1, 2017: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/28500748/epidemiology-and-genetic-diversity-of-classic-human-astrovirus-among-hospitalized-children-with-acute-gastroenteritis-in-uruguay
#16
Fernando Lopez, Andrés Lizasoain, Matías Victoria, Cecilia Papalardo, Sebastian Castro, Edit Arreseigor, Patricia López, Rodney Colina
Classic Human Astrovirus (Classic HAstV) are one of the most important causes of pediatric acute gastroenteritis (AGE), after rotaviruses and arguably caliciviruses. The aim of this study was to determine the molecular epidemiology of Classic HAstV from 175 clinical samples, being 153 stools and 22 vomits, collected from pediatric hospitalized patients with AGE in Salto city, Uruguay, from January 2011 to December 2012. Classic HAstV were detected and genotyped by using a qualitative Retro Transcription-Polimerase Chain Reaction (RT-PCR) directed to the Open Reading Frame-2 (ORF2) region C...
May 13, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28472060/microbicidal-effects-of-weakly-acidified-chlorous-acid-water-against-feline-calicivirus-and-clostridium-difficile-spores-under-protein-rich-conditions
#17
Hisataka Goda, Hitoshi Yamaoka, Haruyuki Nakayama-Imaohji, Hiroyuki Kawata, Isanori Horiuchi, Yatsuka Fujita, Tamiko Nagao, Ayano Tada, Atsushi Terada, Tomomi Kuwahara
Sanitation of environmental surfaces with chlorine based-disinfectants is a principal measure to control outbreaks of norovirus or Clostridium difficile. The microbicidal activity of chlorine-based disinfectants depends on the free available chlorine (FAC), but their oxidative potential is rapidly eliminated by organic matter. In this study, the microbicidal activities of weakly acidified chlorous acid water (WACAW) and sodium hypochlorite solution (NaClO) against feline calcivirus (FCV) and C. difficile spores were compared in protein-rich conditions...
2017: PloS One
https://www.readbyqxmd.com/read/28393313/molecular-detection-of-viruses-in-kenyan-bats-and-discovery-of-novel-astroviruses-caliciviruses-and-rotaviruses
#18
Cecilia Waruhiu, Sheila Ommeh, Vincent Obanda, Bernard Agwanda, Francis Gakuya, Xing-Yi Ge, Xing-Lou Yang, Li-Jun Wu, Ali Zohaib, Ben Hu, Zheng-Li Shi
This is the first country-wide surveillance of bat-borne viruses in Kenya spanning from 2012-2015 covering sites perceived to have medium to high level bat-human interaction. The objective of this surveillance study was to apply a non-invasive approach using fresh feces to detect viruses circulating within the diverse species of Kenyan bats. We screened for both DNA and RNA viruses; specifically, astroviruses (AstVs), adenoviruses (ADVs), caliciviruses (CalVs), coronaviruses (CoVs), flaviviruses, filoviruses, paramyxoviruses (PMVs), polyomaviruses (PYVs) and rotaviruses...
April 2017: Virologica Sinica
https://www.readbyqxmd.com/read/28389099/a-multi-national-european-cross-sectional-study-of-feline-calicivirus-epidemiology-diversity-and-vaccine-cross-reactivity
#19
Maria M Afonso, Gina L Pinchbeck, Shirley L Smith, Janet M Daly, Rosalind M Gaskell, Susan Dawson, Alan D Radford
BACKGROUND: Feline calicivirus (FCV) is an important pathogen of cats for which vaccination is regularly practised. Long-term use of established vaccine antigens raises the theoretical possibility that field viruses could become resistant. This study aimed to assess the current ability of the FCV-F9 vaccine strain to neutralise a randomly collected contemporary panel of FCV field strains collected prospectively in six European countries. METHODS: Veterinary practices (64) were randomly selected from six countries (UK, Sweden, Netherlands, Germany, France and Italy)...
May 9, 2017: Vaccine
https://www.readbyqxmd.com/read/28363968/benign-rabbit-calicivirus-in-new-zealand
#20
Leila J Nicholson, Jackie E Mahar, Tanja Strive, Tao Zheng, Edward C Holmes, Vernon K Ward, Janine A Duckworth
The Czech v351 strain of rabbit hemorrhagic disease virus (RHDV1) is used in Australia and New Zealand as a biological control agent for rabbits, which are important and damaging introduced vertebrate pests in these countries. However, nonpathogenic rabbit caliciviruses (RCVs) can provide partial immunological cross-protection against lethal RHDV infection and thus interfere with effective rabbit biocontrol. Antibodies that cross-reacted against RHDV antigens were found in wild rabbits before the release of RHDV1 in New Zealand in 1997, suggesting that nonpathogenic RCVs were already present in New Zealand...
June 1, 2017: Applied and Environmental Microbiology
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