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Assessment of aflatoxin B1 in maize and awareness of aflatoxins in Son La, Vietnam 越南松罗地区玉米黄曲霉毒素B1含量评估及对黄曲霉毒素的认识
Q1 Environmental Science Pub Date : 2018-01-01 DOI: 10.1080/20008686.2018.1553464
X. Nguyen, Thuy T. Nguyen, H. Nguyen-Viet, Khanh Ngoc Tran, J. Lindahl, D. Grace Randolph, Thanh Minh Ha, Hu Suk Lee
ABSTRACT Aflatoxin B1 (AFB1) is a fungal by-product which causes acute and chronic toxicity in humans and many other animals. This research was conducted to evaluate the prevalence of AFB1 contamination in maize and residents’ awareness of aflatoxins in Son La province, Vietnam. Maize samples were randomly collected from Son La province using multi-stage sampling. We used cut-off levels of 5 and 20 μg/kg and calculated the mean, median and range for each district. In addition, a questionnaire collected information from households about their knowledge, attitude and practice related to moldy maize. Out of 378 maize samples from Son La, 204 (54.0%) and 141 (37.3%) were contaminated with AFB1 at more than 5 µg/kg and 20 µg/kg, respectively. Mai Son district had the highest proportion of samples (54.0%) using a cut-off level > 20 µg/kg, and Yen Chau district the lowest (4%). People from the Thai ethnic group were 30.9 times more likely to consume meat from animals fed moldy maize than people from the Kinh ethnic group (p = 0.003). Maize in Son La is contaminated with AFB1 at levels which imply better control of aflatoxins in maize for human consumptions and animal feed is needed.
黄曲霉毒素B1(AFB1)是一种真菌副产物,可对人类和许多其他动物产生急性和慢性毒性。本研究旨在评估越南索拉省玉米中AFB1污染的流行率和居民对黄曲霉毒素的认识。玉米样品采用多阶段抽样法从索拉省随机采集。我们使用了5和20μg/kg的临界水平,并计算了每个地区的平均值、中位数和范围。此外,一份调查问卷收集了家庭关于发霉玉米的知识、态度和做法的信息。在Son-La的378个玉米样本中,204个(54.0%)和141个(37.3%)分别被AFB1污染,其浓度超过5µg/kg和20µg/kg。Mai Son区的样本比例最高(54.0%),使用的截止水平>20µg/kg,严州区最低(4%)。泰族人食用发霉玉米动物肉的可能性是金族人的30.9倍(p=0.003)。Son-La的玉米受到AFB1的污染,这意味着人类食用玉米中的黄曲霉毒素得到了更好的控制,需要动物饲料。
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引用次数: 7
Hygiene knowledge, attitudes and practices among dairy value chain actors in Assam, north-east India and the impact of a training intervention 印度东北部阿萨姆邦乳制品价值链参与者的卫生知识、态度和做法以及培训干预的影响
Q1 Environmental Science Pub Date : 2018-01-01 DOI: 10.1080/20008686.2018.1555444
J. Lindahl, R. Deka, R. Assé, L. Lapar, D. Grace
ABSTRACT Background: Food-borne diseases are contributing to health burdens globally, especially in developing countries. In India, milk production is important for nutrition security, but milk products are prone to contamination with pathogens. In Assam, a state in Northeast India, a novel hygiene intervention was conducted in 2009–2011, and the knowledge, attitudes and practices among milk producers, milk traders and sweet makers were assessed.Methods: The first survey was conducted in 2009 and included 405 producers, 175 traders and 220 sweet makers from 4 districts. The second survey was conducted in 2012 with 161 producers and 226 traders from 2 districts, both trained and untrained participants. In addition to questionnaires, observations on hygiene were done and samples were analysed for Escherichia coli.Results: In 2009 only 13.0%, 9.1%, and 33.1% of producers, traders and sweet makers respectively believed diseases could be transmitted by milk. There were significant improvements in knowledge after training among both traders and producers. The proportion of samples containing added water decreased from 2009 to 2012. Although knowledge had increased, all samples tested contained E. coli.Conclusion: This study shows a need to increase knowledge about milk-borne diseases and hygiene, and the positive effect of a training intervention.
摘要背景:食源性疾病正在全球范围内加重健康负担,尤其是在发展中国家。在印度,牛奶生产对营养安全很重要,但牛奶产品容易受到病原体的污染。在印度东北部阿萨姆邦,2009-2011年进行了一项新的卫生干预,并对牛奶生产商、牛奶贸易商和糖果制造商的知识、态度和做法进行了评估。方法:第一次调查于2009年进行,调查对象包括来自4个地区的405名生产商、175名贸易商和220名制糖商。第二次调查于2012年进行,共有来自两个地区的161名生产商和226名贸易商参加,他们都是受过培训和未受过培训的参与者。除了问卷调查外,还进行了卫生观察,并对样本中的大肠杆菌进行了分析。结果:2009年,分别只有13.0%、9.1%和33.1%的生产商、贸易商和糖果制造商认为疾病可以通过牛奶传播。经过培训,贸易商和生产者的知识都有了显著提高。从2009年到2012年,含有添加水的样本比例有所下降。尽管知识有所增加,但所有检测的样本都含有大肠杆菌。结论:本研究表明,需要增加对奶源性疾病和卫生的认识,以及培训干预的积极作用。
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引用次数: 19
A survey of aflatoxin M1 contamination in raw milk produced in urban and peri-urban areas of Kisumu County, Kenya 肯尼亚基苏木县城市和城郊地区生产的原料奶中黄曲霉毒素M1污染的调查
Q1 Environmental Science Pub Date : 2018-01-01 DOI: 10.1080/20008686.2018.1547094
Gladys Anyango, F. Mutua, I. Kagera, Pauline Andang`O, D. Grace, J. Lindahl
ABSTRACT Background: Food safety is of increasing global concern, and a OneHealth issue requiring attention of many disciplines. Aflatoxins are toxins produced by fungi and found in foods and feeds, and exposure causes negative health effects in humans and animals. When lactating animals consume aflatoxin B1, the metabolite (AFM1) is transferred to milk. Methods: A cross-sectional study was designed to determine characteristics of smallholder dairy farming in urban and peri-urban areas of Kisumu and quantify AFM1 in milk. Data was collected from 97 randomly selected dairy farms on farming practices, milk production, and awareness about aflatoxins. Collected milk samples were analyzed using enzyme-linked immunosorbent assay for AFM1. Results: Average milk produced was 13 liters per day per household and mainly used for household consumption and sold to neighbours. Farmers mainly fed cows on forage and concentrates (62.9%). Levels of AFM1 ranged from below the detection limit to 151 ppt, with a mean of 29.67 ppt; 26.4% exceeding the EU limit. Concentrate feeding was associated with higher AFM1 levels (p = 0.002); with farms feeding concentrates more likely to have levels exceeding 50 ppt (OR = 10.1). Conclusion: In conclusion, milk produced by small holder dairy farmers in Kisumu County frequently is contaminated with AFM1, implying health risks for human and animals.
摘要背景:食品安全问题日益受到全球关注,是一个需要多学科关注的健康问题。黄曲霉毒素是由真菌产生的毒素,存在于食品和饲料中,接触黄曲霉毒素会对人类和动物的健康产生负面影响。当哺乳动物摄入黄曲霉毒素B1时,其代谢物(AFM1)被转移到乳汁中。方法:设计了一项横断面研究,以确定基苏木城市和城郊地区小农奶牛养殖的特征,并量化牛奶中的AFM1。从97个随机选择的奶牛场收集了有关耕作方式、牛奶产量和对黄曲霉毒素认识的数据。采集的牛奶样品采用AFM1酶联免疫吸附法进行分析。结果:每户平均每天生产13升牛奶,主要用于家庭消费和出售给邻居。农民以饲料和精料为主(62.9%)。AFM1水平范围从低于检测限到151 ppt,平均29.67 ppt;超过欧盟规定的26.4%。精料饲喂与AFM1水平升高相关(p = 0.002);农场饲养的浓缩饲料更有可能超过50 ppt (OR = 10.1)。结论:基苏木县小农奶农生产的牛奶经常受到AFM1污染,对人类和动物存在健康风险。
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引用次数: 17
Serological evidence of Brucella infections in dairy cattle in Haryana, India 印度哈里亚纳邦奶牛布鲁氏菌感染的血清学证据
Q1 Environmental Science Pub Date : 2018-01-01 DOI: 10.1080/20008686.2018.1555445
J. Lindahl, Naresh Goyal Kumar, R. Deka, R. Shome, D. Grace
ABSTRACT Background: In India, milk production is important for both the economy and the provision of nutritious food. However, the productivity of the livestock is affected by circulating infectious diseases, and some zoonotic diseases, such as brucellosis, may cause a heavy impact on the farm as the disease cause abortions and reproductive failures in bovines, with chronic febrile illness in humans. Methods: 249 dairy farms in the state of Haryana, India, were interviewed, and collected raw milk from 81 were analyzed for antibodies towards Brucella abortus. Results: More samples were positive using milk ring test (MRT) (55.6%, 45/81) than using enzyme-linked immunosorbent assay (ELISA) (29.6%, 24/81), with all ELISA positive samples also positive in MRT. The ELISA results were used for risk factor analyses. Seropositive farms were significantly (p = 0.015) larger than seronegative, with an average 7.9 cattle, compared to 4.9. Seropositive farms were more likely to report stillbirth occurring the last year, and a significantly higher proportion of seropositive farms reported retained placenta (odds ratio 5.2). Conclusion: This study showed that Brucella seroprevalence is high among farms in Haryana, and a control program is needed to ensure improved human and animal health, as well as improved livestock productivity.
摘要背景:在印度,牛奶生产对经济和营养食品的供应都很重要。然而,牲畜的生产力受到循环传染病的影响,一些人畜共患疾病,如布鲁氏菌病,可能会对农场造成严重影响,因为这种疾病会导致牛流产和繁殖失败,以及人类的慢性发热疾病。方法:对印度哈里亚纳邦249家奶牛场进行了访谈,并对81家奶牛场的原料奶进行了流产布鲁氏菌抗体分析。结果:乳环试验(MRT)阳性率(55.6%,45/81)高于酶联免疫吸附试验(ELISA)(29.6%,24/81),所有ELISA阳性样本也在MRT中呈阳性。ELISA结果用于危险因素分析。血清阳性农场显著(p=0.015)大于血清阴性农场,平均有7.9头牛,而血清阴性农场为4.9头牛。血清阳性农场更有可能报告去年发生的死胎,血清阳性农场报告保留胎盘的比例明显更高(比值比5.2)。结论:这项研究表明,哈里亚纳邦农场的布鲁氏菌血清流行率很高,需要制定一项控制计划,以确保改善人类和动物健康,以及提高牲畜生产力。
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引用次数: 9
Leptospira bacteria detected in rodents in Tana River and Garissa counties of Kenya 肯尼亚塔纳河和加里萨县啮齿动物中检测到钩端螺旋体细菌
Q1 Environmental Science Pub Date : 2018-01-01 DOI: 10.1080/20008686.2018.1547093
M. Wainaina, B. Bett, E. Ontiri, K. Picozzi, B. Agwanda, Tanja M. Strand, D. Grace, Å. Lundkvist, J. Lindahl
ABSTRACT Introduction: Leptospirosis is a bacterial zoonotic disease with wide geographical spread. Its presence in Kenya and some of the neighbouring countries has been documented before and it is thought to contribute significantly to the number of febrile cases in human populations and abortions in livestock. This study investigated Leptospira spp. presence in rodents collected in both a pastoral and irrigated region of Kenya. Materials and methods: Blood and kidney samples were screened for leptospiral DNA by PCR, and ELISA was used to detect antibodies in tissue fluid. Results and discussion: Almost 42% (28/67) of the rodents were found to be PCR positive and 25% (14/56) by the ELISA test. Focus group discussions revealed that the local population perceived an increase in the rodent population and febrile illnesses not responsive to malarial treatment, a possible attestation of importance of non-malarial acute febrile illnesses such as leptospirosis in the communities. Conclusion: While the study was small, it indicated that rodents could play an important role as reservoir hosts for the bacteria in these areas.
摘要简介:钩端螺旋体病是一种具有广泛地理分布的细菌性人畜共患疾病。它在肯尼亚和一些邻国的存在以前已被记录在案,并且被认为是造成人口发热病例和牲畜堕胎数量的重要原因。本研究调查了在肯尼亚牧区和灌区收集的啮齿动物中钩端螺旋体的存在。材料与方法:采用PCR法筛选血液和肾脏标本中钩端螺旋体DNA, ELISA法检测组织液中抗体。结果与讨论:PCR检测阳性率为42% (28/67),ELISA检测阳性率为25%(14/56)。焦点小组讨论显示,当地居民认为啮齿动物种群和对疟疾治疗无反应的发热性疾病有所增加,这可能证明了社区中钩端螺旋体病等非疟疾急性发热性疾病的重要性。结论:本研究规模虽小,但提示啮齿动物可能在这些地区发挥重要的寄主作用。
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引用次数: 2
Development of nineteen Taqman real-time PCR assays for screening and detection of select highly pathogenic bacteria 建立19种Taqman实时PCR方法筛选和检测高致病性细菌
Q1 Environmental Science Pub Date : 2018-01-01 DOI: 10.1080/20008686.2018.1553462
Talar Boskani, B. Edvinsson, T. Wahab
ABSTRACT Background: Here, we describe a set of six Taqman real-time PCR assays for screening of highly pathogenic bacteria, i.e. Bacillus, Brucella, Burkholderia, Coxiella, Francisella, and Yersinia species. Twelve specific assays are subsequently performed to identify the species that are classified as highly pathogenic and a general 16S Taqman real-time PCR assay is included to see if the sample contains bacteria. Methods: These assays were designed using all available genomes in the public database of bioterror agents. They were validated with a collection of reference strains, clinical isolates and one environmental sample. Results: These assays were tested against all the ring trials we participate among them the ones which were coordinated by Robert Koch Institute from a repository built up in the framework of the EU funded project ‘Efficient response to highly dangerous and emerging pathogens’ (EMERGE). All bacteria were accurately identified in food, clinical and environmental matrices. Conclusions: These assays are used routinely in our diagnostic laboratory to rapidly screen for and specifically detect select highly pathogenic bacteria of potential bioterrorism use. The platform can be used as an open array format in 96-well plates to screen for a single species or up to 6 agents in one run. Abbreviations: ATCC; American Type Culture Collection, B; Brucella; BLAST: Basic local alignment search tool; BSL; Biosafety level; Cq: Quantification cycle; DNA; Deoxyribonucleic acid, FAM; 6-carboxyfluorescein, FOHM; the Public Health Agency of Sweden, IAC; internal amplification control, LOD: Limit of detection, MGB; Minor groove binder, NCBI; National Center for Biotechnology Information, NFA; National Food Agency, PCR; polymerase chain reaction; PhHV-1; Phocine Herpesvirus 1, SVA; National Veterinary Institute, Tm: Melting Temperature.
摘要背景:在这里,我们描述了一套六种Taqman实时PCR检测方法,用于筛选高致病性细菌,即芽孢杆菌,布鲁氏菌,伯克霍尔德氏菌,科希氏菌,弗朗西斯菌和耶尔森氏菌。随后进行12项特异性测定,以确定被分类为高致病性的物种,并包括一般的16S Taqman实时PCR测定,以确定样品是否含有细菌。方法:利用生物恐怖制剂公共数据库中所有可用的基因组进行设计。通过收集参考菌株、临床分离株和一份环境样本进行验证。结果:这些检测方法在我们参与的所有环试验中进行了测试,其中包括由罗伯特科赫研究所协调的试验,这些试验是在欧盟资助的项目“对高度危险和新出现的病原体的有效反应”(EMERGE)框架下建立的储存库中进行的。所有细菌均在食品、临床和环境基质中得到准确鉴定。结论:这些检测方法在我们的诊断实验室常规使用,用于快速筛选和特异性检测潜在生物恐怖主义用途的高致病性细菌。该平台可在96孔板中用作开放阵列格式,可在一次运行中筛选单一物种或多达6种试剂。缩写:写明ATCC;美国字体文化收藏B;布鲁氏菌;BLAST:基本的局部比对搜索工具;声波测井;生物安全水平;Cq:量化周期;DNA;脱氧核糖核酸;6-carboxyfluorescein FOHM;瑞典公共卫生署(IAC);内部放大控制,LOD:检出限,MGB;小槽粘结剂,NCBI;国家生物技术信息中心;国家食品机构;聚合酶链反应;PhHV-1;猪疱疹病毒1型;国家兽医研究所,Tm:熔化温度。
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引用次数: 3
A one health opinion editorial RE: ideal protocol for future international one health congress meetings, all inclusive modus operandi 一个卫生意见社论RE:未来国际一个卫生大会会议的理想议定书,所有的工作方式
Q1 Environmental Science Pub Date : 2018-01-01 DOI: 10.1080/20008686.2018.1537461
Bruce Kaplan, Laura H. Kahn, T. Monath, L. Conti, T. Yuill
‘. . .Whereas previous Congresses have been very good by all accounts, they have not adequately been all inclusive with respect to addressing a broad spectrum, co-equal recognition and exposure to both One Health essential priorities, i.e. global public health and global clinical health considerations, among a few others. Frankly, this has been known to occur due to concerns about securing adequate funding for public health research projects visà-vis clinical health missions, etc. In addition, there have been justifiable complaints regarding the meetings being “too veterinarian oriented without enough physician and other health science professional representations.” Hopefully, this next Congress will demonstrate a more ecumenical approach while addressing the issue of attracting a broader spectrum of health science oriented attendees. Human, animal and environmental health (eco-health) are in dire need of such a far reaching protocol endeavor. Spotlighted International Congresses need to become free from sectarian predominance, or even the hint of tribalism. They need to take the high road: begin “appealing to their better angels” in the true spirit of “One World-One Medicine-One Health.” An accurate and complete mosaic image of one health requires that all pieces be present and in place.’ Laudably, the One Health Platform https://mail chi.mp/onehealthplatform/world-one-health-con gress-free-lecture-202629?e=49188b2102, a leading international One Health organization has undertaken the important role of organizing One Health congresses on a biennial basis. Members of the One Health Initiative team have worked proudly with this exceptional organization’s leadership at the fifth (5) Congress in Saskatoon, Canada in June 2018 https://onehealthplatform.com/iohc/commit tees/organizing-executive-board. The sixth (6) Congress is to be held in Edinburgh, Scotland, UK June 15–18, 2020. This promises to be a landmark event. To date, there have been five (5) International One Health Congress meetings worldwide. Ostensibly their aim has been to foster and educate the international communities about the recognized real world and future visionary values attainable once the One Health approach is indeed implemented worldwide, i.e. ‘. . . in every Middlesex Village and farm’[1]. Most One Health supporters/advocates http://www. onehealthinitiative.com/supporters.php believe that to mean principally: ‘One Health is the collaborative efforts of multiple disciplines working locally, nationally, and globally to attain optimal health for people, animals, plants and our environment.’ and ‘One Health implementation will help protect and/or save untold millions of lives in our generation and for those to come.’ [2–5]
'。尽管历届大会的表现都很好,但在涉及广泛、平等承认和接触“一个健康”的基本优先事项方面,即全球公共卫生和全球临床卫生等方面,它们并没有充分包容各方。坦率地说,众所周知,这种情况的发生是出于对公共卫生研究项目相对于临床卫生任务等获得足够资金的担忧。此外,有人抱怨这些会议“过于以兽医为导向,没有足够的医生和其他健康科学专业代表”,下届大会将展示一种更普世的方法,同时解决吸引更广泛的以健康科学为导向的与会者的问题。人类、动物和环境健康(生态健康)迫切需要这样一项具有深远影响的协议努力。引人注目的国际大会需要摆脱宗派主义的主导,甚至是部落主义的暗示。他们需要走上崇高的道路:以“同一个世界、同一种医学、同一个健康”的真正精神,开始“呼吁他们更好的天使”。一个健康的准确、完整的马赛克图像需要所有部分都在场并到位值得称赞的是,一个健康平台https://mailchi.mp/onehealthplatform/world-one-health-con gress-free-electure-202629?e=49188b2102,一个领先的国际“一个健康”组织承担了每两年组织一次“一个卫生”大会的重要作用。2018年6月,在加拿大萨斯卡通举行的第五届大会上,“一个健康倡议”团队的成员与该杰出组织的领导层一起自豪地工作https://onehealthplatform.com/iohc/committees/组织执行委员会。第六届大会将于2020年6月15日至18日在英国苏格兰爱丁堡举行。这将是一个具有里程碑意义的事件。到目前为止,世界各地已经举行了五(5)次国际一健康大会。表面上,他们的目标是培养和教育国际社会,让他们了解一旦“一个健康”方法在全球范围内真正实施,就可以实现的公认的现实世界和未来有远见的价值观,即“。在米德尔塞克斯郡的每一个村庄和农场里”[1]。大多数One Health支持者/倡导者http://www.onehealthinitiative.com/supporters.php认为这主要意味着:“一个健康是多个学科在当地、全国和全球范围内共同努力,为人类、动物、植物和我们的环境实现最佳健康。”“一个健康”的实施将有助于保护和/或挽救我们这一代人和未来数百万人的生命。”[2-5]
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引用次数: 0
Bovine brucellosis: prevalence, risk factors, economic cost and control options with particular reference to India- a review 牛布鲁氏菌病:流行、风险因素、经济成本和控制选择,特别是印度——综述
Q1 Environmental Science Pub Date : 2018-01-01 DOI: 10.1080/20008686.2018.1556548
R. Deka, U. Magnusson, D. Grace, J. Lindahl
ABSTRACT Background: Brucellosis is an economically important zoonotic disease with worldwide distribution, with low-income countries being more affected. The disease is endemic in India, a country that house the world’s largest cattle and buffalo population and produce the most milk in the world. Results: Prevalence of the disease in the country is reported as low as 1% to as high as 60% by different researchers but many of the published studies that reported higher prevalence were conducted in non-randomised samples. Based on this review, overall prevalence in the country is likely 12% or less. About 20 different risk factors are reported that contribute/predispose to occurrence of bovine brucellosis. The risk factors could be classified in four groups: host factors, farmer’s factors, managemental factors, and agro-ecological factors. Various studies reported high economic burden of the diseases in dairy animals but there is dearth of comprehensive and rigorous economic studies. Conclusions: In the absence of highly effective vaccines and because of difficulties in executing a segregation and slaughter policy of infected animals in countries like India, control of bovine brucellosis remains a challenge.
摘要背景:布鲁氏菌病是一种经济上重要的人畜共患疾病,分布在世界各地,低收入国家受影响更大。这种疾病在印度流行,印度是世界上牛和水牛数量最多、产奶量最多的国家。结果:据不同的研究人员报告,该国的患病率低至1%,高达60%,但许多已发表的报告患病率较高的研究都是在非随机样本中进行的。根据这项审查,该国的总体流行率可能为12%或更低。据报道,约有20种不同的风险因素导致/易患牛布鲁氏菌病。风险因素可分为四类:宿主因素、农民因素、经营因素和农业生态因素。各种研究报告了乳制品动物疾病的高经济负担,但缺乏全面和严格的经济研究。结论:在缺乏高效疫苗的情况下,由于印度等国难以执行受感染动物的隔离和屠宰政策,控制牛布鲁氏菌病仍然是一个挑战。
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引用次数: 52
Human to animal transmission of influenza A(H1N1)pdm09 in a turkey breeder flock in Norway. 甲型H1N1流感pdm09在挪威火鸡饲养群中的人对动物传播。
Q1 Environmental Science Pub Date : 2017-12-19 eCollection Date: 2017-01-01 DOI: 10.1080/20008686.2017.1416249
Siri Kulberg Sjurseth, Britt Gjerset, Karoline Bragstad, Olav Hungnes, Helene Wisløff, Chiek Er, Mette Valheim, Siri M Løtvedt, Bruce David, Skjalg A Hanssen, Siri H Hauge, Merete Hofshagen

Introduction: Routine surveillance samples disclosed seropositivity to influenza A virus (IAV) in a Norwegian turkey breeder flock. Simultaneous reports of influenza-like symptoms in farm workers and a laboratory confirmed influenza A(H1N1)pdm09 (H1N1pdm09) infection in one person led to the suspicion of a H1N1pdm09 infection in the turkeys. Animals and methods: H1N1pdm09 infection was confirmed by a positive haemaggutinin inhibition test using H1N1pdm09 antigens, and detection of H1N1pdm09 nucleic acid in reproductive organs of turkey hens. The flock showed no clinical signs except for a temporary drop in egg production. Previous reports of H1N1pdm09 infection in turkeys suggested human-to-turkey transmission (anthroponosis) during artificial insemination. Results and discussion: The flock remained seropositive to IAV and the homologous H1N1pdm09 antigen throughout the following 106 days, with decreasing seroprevalence over time. IAV was not detected in fertilised eggs or in turkey poults from the farm, however, maternally derived antibodies against H1N1pdm09 were found in egg yolks and in day-old poults. Genetic analyses of haemagglutinin gene sequences from one of the infected farm workers and turkeys revealed a close phylogenetic relationship, and confirmed human-to-turkey virus transmission.

导语:常规监测样本显示挪威火鸡种鸡对甲型流感病毒(IAV)血清呈阳性。农场工人出现流感样症状的同时报告和实验室确认一人感染甲型H1N1流感pdm09 (H1N1pdm09),导致怀疑这些火鸡感染了H1N1pdm09。动物与方法:采用H1N1pdm09抗原进行血凝素抑制试验,并在火鸡生殖器官中检测H1N1pdm09核酸,证实H1N1pdm09感染。鸡群除了产蛋量暂时下降外,没有表现出任何临床症状。以前关于火鸡h1n1 - pdm09感染的报告表明,人工授精过程中人与人之间的传播(人类传染)。结果和讨论:在接下来的106天里,鸡群对IAV和同源的H1N1pdm09抗原保持血清阳性,随着时间的推移血清阳性率逐渐下降。在该农场的受精卵或火鸡中未检测到禽流感病毒,但在蛋黄和日龄家禽中发现了来自母体的抗H1N1pdm09抗体。对一名受感染的农场工人和火鸡的血凝素基因序列的遗传分析显示出密切的系统发育关系,并证实了病毒在人-火鸡之间的传播。
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引用次数: 4
High seroprevalence of Rift Valley fever phlebovirus in domestic ruminants and African Buffaloes in Mozambique shows need for intensified surveillance. 莫桑比克国内反刍动物和非洲水牛中裂谷热白带病毒血清高流行率表明需要加强监测。
Q1 Environmental Science Pub Date : 2017-12-17 eCollection Date: 2017-01-01 DOI: 10.1080/20008686.2017.1416248
Belisário Moiane, Lourenço Mapaco, Peter Thompson, Mikael Berg, Ann Albihn, José Fafetine

Introduction: Rift Valley fever (RVF) is an arthropod-borne disease that affects both animals and humans. RVF phlebovirus (RVFPV) is widespread in Africa and Arabian Peninsula. In Mozambique, outbreaks were reported in South; seroprevalence studies performed in livestock and water buffaloes were limited to central and south regions. We evaluated the seroprevalence of RVFPV among domestic ruminants and African buffaloes from 7 of 10 provinces of Mozambique, to understand the distribution of RVFPV and provide data for further RVF control programs. Materials and methods: A total of 1581 blood samples were collected in cattle, 1117 in goats, 85 in sheep and 69 in African buffaloes, between 2013 and 2014, and the obtained sera were analyzed by ELISA. Results and discussion: The overall seroprevalence of RVFPV domestic ruminants and African buffaloes was 25.6%. The highest was observed in cattle (37.3%) and African buffaloes (30.4%), which were higher than in previous studies within Mozambique. In south and central regions, the overall seroprevalences were higher (14.9%-62.4%) than in the north. Conclusion: This study showed the presence of anti-RVFPV antibodies in animals from all sampled provinces, suggesting that RVFPV is actively circulating among domestic ruminants and African buffaloes in Mozambique, therefore surveillance should be intensified.

裂谷热(RVF)是一种节肢动物传播的疾病,可影响动物和人类。裂谷热白蛉病毒(RVFPV)在非洲和阿拉伯半岛广泛传播。在莫桑比克,南部地区报告了疫情;在牲畜和水牛中进行的血清患病率研究仅限于中部和南部地区。我们评估了莫桑比克10个省中的7个省的家畜反刍动物和非洲水牛中裂谷热病毒的血清患病率,以了解裂谷热病毒的分布,并为进一步的裂谷热病毒控制规划提供数据。材料与方法:2013 - 2014年共采集牛1581份、山羊1117份、绵羊85份、非洲水牛69份血液样本,采用ELISA法进行血清分析。结果与讨论:家畜反刍动物和非洲水牛的RVFPV血清总阳性率为25.6%。在牛(37.3%)和非洲水牛(30.4%)中观察到的比例最高,高于以前在莫桑比克进行的研究。在南部和中部地区,总体血清患病率(14.9%-62.4%)高于北部地区。结论:本研究显示在所有取样省份的动物中均存在抗裂谷热病毒抗体,提示裂谷热病毒在莫桑比克的家畜反刍动物和非洲水牛中活跃传播,因此应加强监测。
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引用次数: 15
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Infection Ecology and Epidemiology
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