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Biosecurity

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https://www.readbyqxmd.com/read/27935670/development-of-a-pathway-model-to-assess-the-exposure-of-european-pine-trees-to-pine-wood-nematode-via-the-trade-of-wood
#1
J C Douma, W van der Werf, L Hemerik, C Magnusson, C Robinet
Pine wood nematode (PWN), Bursaphelenchus xylophilus, is a threat for pine species (Pinus spp.) throughout the world. The nematode is native to North America, and invaded Japan, China, Korea and Taiwan, and more recently Portugal and Spain. PWN enters new areas through trade in wood products. Once established, eradication is not practically feasible. Therefore, preventing entry of PWN into new areas is crucial. Entry risk analysis can assist in targeting management to reduce the probability of entry. Assessing the entry of PWN is challenging due to the complexity of the wood trade and the wood processing chain...
December 9, 2016: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/27932738/disinfectant-for-hpai-biosecurity
#2
(no author information available yet)
No abstract text is available yet for this article.
December 10, 2016: Veterinary Record
https://www.readbyqxmd.com/read/27931934/assessing-the-impact-of-tailored-biosecurity-advice-on-farmer-behaviour-and-pathogen-presence-in-beef-herds-in-england-and-wales
#3
J M Cardwell, S Van Winden, W Beauvais, A Mastin, W A De Glanville, J Hardstaff, R E Booth, J Fishwick, D U Pfeiffer
The term 'biosecurity' encompasses many measures farmers can take to reduce the risk of pathogen incursion or spread. As the best strategy will vary between settings, veterinarians play an important role in assessing risk and providing advice, but effectiveness requires farmer acceptance and implementation. The aim of this study was to assess the effectiveness of specifically-tailored biosecurity advice packages in reducing endemic pathogen presence on UK beef suckler farms. One hundred and sixteen farms recruited by 10 veterinary practices were followed for three years...
December 1, 2016: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/27931922/qualitative-analysis-of-the-risks-and-practices-associated-with-the-spread-of-african-swine-fever-within-the-smallholder-pig-value-chains-in-uganda
#4
Michel Dione, Emily Ouma, Felix Opio, Brian Kawuma, Danilo Pezo
A study was undertaken between September 2014 and December 2014 to assess the perceptions of smallholder pig value chain actors of the risks and practices associated with the spread of African swine fever (ASF) disease within the pig value chains. Data was collected from 136 value chain actors and 36 key informants through 17 group discussions and two key informant interview (KII) sessions respectively using Participatory Rural Appraisal (PRA) tools. Results from this study revealed that according to value chain actors and stakeholders, the transporting, slaughtering, and collecting/bulking nodes represent the highest risk, followed by the inputs and services (feeds and drugs) supply nodes...
December 1, 2016: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/27914702/renal-xenotransplantation-experimental-progress-and-clinical-prospects
#5
Martin Wijkstrom, Hayato Iwase, Wayne Paris, Hidetaka Hara, Mohamed Ezzelarab, David K C Cooper
There are >100,000 patients waiting for kidney transplants in the United States and a vast need worldwide. Xenotransplantation, in the form of the transplantation of kidneys from genetically engineered pigs, offers the possibility of overcoming the chronic shortage of deceased and living human donors. These genetic manipulations can take the form of (i) knockout of pig genes that are responsible for the expression of antigens against which the primate (human or nonhuman primate) has natural "preformed" antibodies that bind and initiate complement-mediated destruction or (ii) the insertion of human transgenes that provide protection against the human complement, coagulation, or inflammatory responses...
November 30, 2016: Kidney International
https://www.readbyqxmd.com/read/27902899/endemic-variation-of-h9n2-avian-influenza-virus-in-china
#6
Yu-Fu Liu, Han-Zhang Lai, Lin Li, Yu-Peng Liu, Wen-Yan Zhang, Ren Gao, Wen-Ke Huang, Qin-Fang Luo, Yan Gao, Qiong Luo, Xiao-Yu Xie, Jia-Hua Xu, Rui-Ai Chen
Forty-two H9N2 subtype AIV strains were isolated from vaccinated commercial chickens in China from 2012 to 2015. Their HA genes had nucleotide sequence homology from 86.7% to 99.7%, and similarity to the classic vaccine strain was 88.6%-92.6%. A comparison was carried out with published HA genes (410 H9 strains) and whole genomes (306 strains) isolated in China during 2012-2015. Interestingly, 99.1% (448/452) of Chinese H9N2 AIV belonged to lineage h9.4.2, and 98.5% (445/452) of the viruses belonged to h9.4...
December 2016: Avian Diseases
https://www.readbyqxmd.com/read/27895651/invertebrate-biosecurity-challenges-in-high-productivity-grassland-the-new-zealand-example
#7
REVIEW
Stephen L Goldson, Barbara I P Barratt, Karen F Armstrong
To protect productive grasslands from pests and diseases, effective pre- and at-border planning and interventions are necessary. Biosecurity failure inevitably requires expensive and difficult eradication, or long-term and often quite ineffective management strategies. This is compared to the early intervention more likely for sectors where there is public and political interest in plants of immediate economic and/or social value, and where associated pests are typically located above-ground on host plantings of relatively limited distribution...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27888583/systematic-epidemiological-investigations-of-cases-of-senecavirus-a-in-us-swine-breeding-herds
#8
K L Baker, C Mowrer, A Canon, D C L Linhares, C Rademacher, L A Karriker, D J Holtkamp
Epidemiological investigations were conducted on a case series of six Senecavirus A (SVA)-affected breeding herds in the United States to determine potential routes of introduction and enhance the swine industry's knowledge of SVA's clinical presentation and spread. Each SVA-affected herd was evaluated using a standard form to ensure that all relevant data were collected. The form was used to guide a detailed discussion about the clinical presentation of SVA and risk events that occurred in the 4 weeks prior to the first observation of clinical signs with the herd veterinarian and farm personnel...
November 25, 2016: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/27875654/biological-risks-to-public-health-lessons-from-an-international-conference-to-inform-the-development-of-national-risk-communication-strategies
#9
Petra Dickmann, Aphaluck Bhatiasevi, Fadela Chaib, Ombretta Baggio, Christina Banluta, Lilian Hollenweger, Abderrahmane Maaroufi
Biological risk management in public health focuses on the impact of outbreaks on health, the economy, and other systems and on ensuring biosafety and biosecurity. To address this broad range of risks, the International Health Regulations (IHR, 2005) request that all member states build defined core capacities, risk communication being one of them. While there is existing guidance on the communication process and on what health authorities need to consider to design risk communication strategies that meet the requirements on a governance level, little has been done on implementation because of a number of factors, including lack of resources (human, financial, and others) and systems to support effective and consistent capacity for risk communication...
November 22, 2016: Health Security
https://www.readbyqxmd.com/read/27875546/evaluation-of-control-strategies-for-porcine-reproductive-and-respiratory-syndrome-prrs-in-swine-breeding-herds-using-a-discrete-event-agent-based-model
#10
Andréia Gonçalves Arruda, Robert Friendship, Jane Carpenter, Amy Greer, Zvonimir Poljak
The objective of this study was to develop a discrete event agent-based stochastic model to explore the likelihood of the occurrence of porcine reproductive and respiratory syndrome (PRRS) outbreaks in swine herds with different PRRS control measures in place. The control measures evaluated included vaccination with a modified-live attenuated vaccine and live-virus inoculation of gilts, and both were compared to a baseline scenario where no control measures were in place. A typical North American 1,000-sow farrow-to-wean swine herd was used as a model, with production and disease parameters estimated from the literature and expert opinion...
2016: PloS One
https://www.readbyqxmd.com/read/27873564/effect-of-enhanced-biosecurity-and-selected-on-farm-factors-on-campylobacter-colonization-of-chicken-broilers
#11
M Georgiev, W Beauvais, J Guitian
Human campylobacteriosis is the most commonly reported gastrointestinal bacterial infection in the EU; poultry meat has been identified as the main source of infection. We tested the hypothesis that enhanced biosecurity and other factors such as welfare status, breed, the practice of partial depopulation and number of empty days between flocks may prevent Campylobacter spp. caecal colonization of poultry batches at high levels (>123 000 c.f.u./g in pooled caecal samples). We analysed data from 2314 poultry batches sampled at slaughter in the UK in 2011-2013...
November 22, 2016: Epidemiology and Infection
https://www.readbyqxmd.com/read/27871330/age-is-not-a-determinant-factor-in-susceptibility-of-broilers-to-h5n2-clade-2-3-4-4-high-pathogenicity-avian-influenza-virus
#12
Kateri Bertran, Dong-Hun Lee, Charles Balzli, Mary J Pantin-Jackwood, Erica Spackman, David E Swayne
In 2014-2015, the US experienced an unprecedented outbreak of H5 clade 2.3.4.4 highly pathogenic avian influenza (HPAI) virus. The H5N2 HPAI virus outbreak in the Midwest in 2015 affected commercial turkey and layer farms, but not broiler farms. To assess any potential genetic resistance of broilers and/or age-related effects, we investigated the pathogenesis and transmission of A/turkey/Minnesota/12582/2015 (H5N2) (Tk/MN/15) virus in commercial 5-week-old broilers, 8-week-old broilers, and >30-week-old broiler breeders...
November 21, 2016: Veterinary Research
https://www.readbyqxmd.com/read/27865508/occurrence-of-methicillin-resistant-staphylococcus-aureus-in-dairy-cattle-herds-related-swine-farms-and-humans-in-contact-with-herds
#13
C Locatelli, P Cremonesi, A Caprioli, V Carfora, A Ianzano, A Barberio, S Morandi, A Casula, B Castiglioni, V Bronzo, P Moroni
In this study we investigated the circulation of methicillin-resistant Staphylococcus aureus (MRSA) in 2 dairy cattle farms (farm A and B), previously identified as MRSA-positive in bulk tank milk samples, and epidemiologically related to swine farms. Collected specimens included quarter milk samples and nasal swabs from dairy cows, pig nasal swabs collected at both the farm and slaughterhouse level, environmental dust samples, and human nasal swabs from the farms' owners and workers. The prevalence of MRSA was estimated at the herd level by testing quarter milk samples...
November 16, 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/27862820/generation-of-marker-free-transgenic-hexaploid-wheat-via-an-agrobacterium-mediated-co-transformation-strategy-in-commercial-chinese-wheat-varieties
#14
Ke Wang, Huiyun Liu, Lipu Du, Xingguo Ye
Genotype-specificity is a big problem lagging the development of efficient hexaploid wheat transformation system. Increasingly, the biosecurity of genetically modified organisms is garnering public attention, so the generation of marker-free transgenic plants is very important to the eventual potential commercial release of transgenic wheat. In this study, 15 commercial Chinese hexaploid wheat varieties were successfully transformed via an Agrobacterium-mediated method, with efficiency of up to 37.7%, as confirmed by the use of Quickstix strips, histochemical staining, PCR analysis, and Southern blotting...
November 10, 2016: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/27862363/a-comprehensive-microbiological-safety-approach-for-agarose-encapsulated-porcine-islets-intended-for-clinical-trials
#15
Lawrence S Gazda, James Collins, Archie Lovatt, Robert W Holdcraft, Merribeth J Morin, Daniel Galbraith, Melanie Graham, Melissa A Laramore, Christine Maclean, John Black, Euan W Milne, Douglas G Marthaler, Horatiu V Vinerean, Michelle M Michalak, Deborah Hoffer, Steven Richter, Richard D Hall, Barry H Smith
BACKGROUND: The use of porcine islets to replace insulin-producing islet β-cells, destroyed during the diabetogenic disease process, presents distinct challenges if this option is to become a therapeutic reality for the treatment of type 1 diabetes. These challenges include a thorough evaluation of the microbiological safety of the islets. In this study, we describe a robust porcine islet-screening program that provides a high level of confidence in the microbiological safety of porcine islets suitable for clinical trials...
November 11, 2016: Xenotransplantation
https://www.readbyqxmd.com/read/27836050/biosecurity-and-the-management-of-emergency-animal-disease-among-commercial-beef-producers-in-new-south-wales-and-queensland-australia
#16
M Hernández-Jover, V Higgins, M Bryant, L Rast, C McShane
Australia places great importance on the prevention and management of emergency animal diseases (EAD), with strict quarantine measures offshore and at the border. Livestock producers are crucial for disease control onshore; however, limited information is available on commercial livestock producers' practices in relation to the management of disease risks. The aims of this paper are to investigate how commercial beef producers in Australia's Northern and Southern beef zones manage EADs and to identify drivers for effective biosecurity and EAD prevention...
November 1, 2016: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/27836046/an-economic-evaluation-of-intervention-strategies-for-porcine-epidemic-diarrhea-ped
#17
Longfeng Weng, Alfons Weersink, Zvonimir Poljak, Kees de Lange, Mike von Massow
The economic losses of Porcine Epidemic Diarrhea (PED) and the net benefits of strategies to control the virus are calculated for individual farrow-to-finish herds. A production simulation model that estimates the number of pigs by population cohorts on a weekly basis for a farrow-to-finish farm depending on production parameters is simulated under normal operating conditions and then with an outbreak of PED. The estimated annual costs of a PED outbreak with the closure of the breeding herd as the only intervention is approximately $300,000 for a 700-sow farrow-to-finishing herd...
November 1, 2016: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/27836043/management-of-on-farm-risk-to-livestock-from-bovine-tuberculosis-in-michigan-usa-white-tailed-deer-predictions-from-a-spatially-explicit-stochastic-model
#18
David S L Ramsey, Daniel J O'Brien, Rick W Smith, Melinda K Cosgrove, Stephen M Schmitt, Brent A Rudolph
The eradication of bovine tuberculosis (bTB), caused by Mycobacterium bovis, from cattle in many locations worldwide is complicated by endemic foci of the disease in free-ranging wildlife. Recent simulation modeling of the bTB outbreak in white-tailed deer (WTD) in Michigan, USA, suggests current management is unlikely to eradicate bTB from the core outbreak area (DMU 452) within the next three decades. However, some level of control short of eradication might sufficiently reduce transmission from deer to cattle to a point at which the negative effects of bTB on the cattle industry could be reduced or eliminated, while minimizing the negative consequences of reducing deer numbers...
November 1, 2016: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/27836037/factors-affecting-chinese-broiler-farmers-main-preventive-practices-in-response-to-highly-pathogenic-avian-influenza
#19
Zeying Huang, Di Zeng, Jimin Wang
Preventive practices are highly important in response to highly pathogenic avian influenza (HPAI). As biosecurity guidelines, HPAI vaccination, antiviral medication, farm cleaning and disinfection jointly focus on mitigating the risk of infectious pathogen spread, yet much less is known about the association between broiler farmer's socio-economic characteristics and their adoption decision of these preventive practices. The current study aims to bridge this gap using a nationally representative household survey of 331 Chinese chicken farm owners, among whom the practices are far from fully adopted (only 58% of the farmers adopt all four types)...
November 1, 2016: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/27821517/tree-invasions-and-biosecurity-eco-evolutionary-dynamics-of-hitchhiking-fungi
#20
Treena I Burgess, Casparus J Crous, Bernard Slippers, Jarkko Hantula, Michael J Wingfield
When non-native plants reach novel environments, they typically arrive with hidden microbiomes. In general, most of these hitchhikers remain on their co-evolved hosts, some contribute to the invasiveness of their hosts, and a small number can undergo host shifts and move onto native hosts. Invasion success can vary depending upon the different categories of fungal associates. When an invader tree relies on a fungal mutualism to survive in the new environment, there is a fundamentally lower likelihood of either the tree, or the fungus, establishing novel associations...
November 7, 2016: AoB Plants
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