山东省2009年高致病性禽流感抗体水平的监测与分析

高致病性禽流感对鸡群的危害巨大,我国规定对高致病性禽流感实行强制免疫的政策。为了摸清山东省高致病性禽流感疫苗免疫的效果,以及时发现、分析免疫中存在的问题,发现免疫不合格的及时进行补免,确保我省不发生疫情,本实验应用血凝抑制方法(HI)对山东省17个市禽的1792份血清进行高致病性禽流感免疫抗体监测。结果显示:高致病性禽流感H5N1re-4和H5N1re-5的抗体免疫合格率分别为84.93%和84.20%。     

紫金县2021年重要动物疫病监测数据分析

为掌握紫金县高致病性禽流感、新城疫、非洲猪瘟、高致病性猪蓝耳病、口蹄疫、猪瘟、猪伪狂犬病、布鲁氏菌病、小反刍兽疫等动物重要疫病流行及疫苗免疫情况，对2021年紫金县采集的4 978份畜禽样品进行了病原学及血清学检测及监测。检测结果显示，2021年紫金县重要动物疫病免疫抗体水平均较高，未检测出重要动物疫病病原，这表明紫金县重要动物疫病免疫效果及防控效果均较好。     

临沂市蒙山草鸡养殖场的免疫抗体监测分析

为了分析山东省临沂市蒙山草鸡养殖场的主要疫病免疫状况,选择10家蒙山草鸡养殖场采集血样、分离血清,通过血凝抑制试验进行新城疫、低致病性禽流感H9亚型和高致病性禽流感H5亚型(Re-8株)的免疫抗体监测。结果表明,临沂市10家蒙山草鸡养殖场高致病性禽流感H5亚型(Re-8株)的免疫效果较好,为100%合格;低致病性禽流感H9亚型和新城疫免疫效果较差,为90%合格,在今后的生产中需要加强对新城疫和低致病性禽流感H9亚型的免疫。     

和田地区禽流感免疫抗体监测结果与分析

为了解和田地区规模化养鸡场高致病性禽流感的免疫效果,用血凝和血凝抑制试验对采自7个规模化鸡场的211份血清样品进行了高致病性禽流感免疫抗体检测。检测结果表明,和田地区绝大多数鸡场达到免疫要求,总体免疫程序科学,免疫效果好,提示应建立常规监测制度,加强综合防控措施。     

重大动物疫病实验室常用监测方法

高致病性禽流感、牲畜口蹄疫、猪瘟和新城疫因其危害巨大,被列为四大动物疫病。在实践中,除采取以免疫为主的综合防制措施外,还通过兽医实验室开展对四大动物疫病的监测,评估四大疫病的免疫效果,了解掌握病原污染状况,     

浦城县高致病性禽流感疫苗免疫效果监测分析

根据禽流感病毒致病性和毒力的不同,可以将禽流感分为高致病性禽流感、低致病性禽流感和无致病性禽流感。高致病性禽流感其发病率和死亡率都很高。做好预防和控制很重要,现将我县2014年高致病性禽流感免疫监测情况报告如下。1材料准备仪器:天平、普通离心机、微型振荡器、微量移液器、滴头、96孔V型血凝反应板。试剂:禽流感病毒H5亚型标准抗原及标准阳性血清(哈尔滨兽医研究所)。2操作方法     

湘西自治州2013年至2015年H5亚型禽流感免疫抗体水平的监测与分析

本研究自2013年起至2015年底,对湘西州8个县市的禽类进行了H5亚型禽流感免疫抗体水平的监测.共采集了规模禽场和散养户的禽血清11216份,其中鸡血清9261份、鸭血清1866份、鹅血清89份.并利用血凝-血凝抑制试验对这些样品进行免疫抗体的检测,整体的免疫合格率达到86.9%.从监测结果来看H5亚型禽流感的免疫抗体合格率在逐年上升.为了掌握湘西自治州高致病性禽流感免疫抗体水平的情况、及时发现疫苗免疫的漏洞,为湘西州高致病性禽流感的防控提供科学决策的依据.     

家禽不同阶段注射禽流感疫苗抗体效价监测与对比

高致病性禽流感是直接危害家禽和人类健康的一种高致病性传染病，已被世界动物卫生组织（OIE）列为A类传染病。为有效地控制高致病性禽流感，本文在七台河地区用H5N1亚型重组禽流感病毒灭活疫苗对800只家禽（鸡400只、鹅400只）进行免疫和抗体效价监测对比试验。其中鸡分为A1、A2两组，鹅分为B1、B2两组，每组各200只。A1、B1两组进行1次免疫，A2、B2两组进行加强免疫1次，对其结果进行对比分析。结果表明，A1、A2、B1、B2四组均为注射疫苗20天后产生抗体，免疫期分别为160天、160天、100天、120天。通过对七台河地区800只家禽高致病性禽流感免疫抗体水平监测和对比分析，揭示了高致病性禽流感疫苗在不同品种和不同免疫次数家禽中产生抗体合格的最佳时间和不合格时间，为本地区制定高致病性禽流感防控方案提供了科学依据。     

湛江市2021年动物免疫抗体监测与分析

根据湛江2021年春防检测结果,对畜禽强制免疫病种免疫抗体水平进行了监测。结果表明：猪瘟、小反刍兽疫、高致病性禽流感、新城疫的免疫抗体水平较高,分别为93%、97%、87%和93%,免疫效果较好,而口蹄疫、猪繁殖与呼吸综合征免疫抗体水平相对较差,分别为78%和46%。口蹄疫抗体水平较去年同期有较大提高,得益于强大的行政手段的实施;猪瘟免疫抗体水平下降与使用新型浓缩疫苗可能有关,猪繁殖与呼吸综合征的免疫及其免疫抗体水平检测有待进一步研究。近年来,湛江市春防集中免疫后2～3周从各县（市、区）采集的禽畜血清(3201份),分别进行高致病性禽流感H5H7、鸡新城疫、口蹄疫OA、小反刍兽疫、猪瘟、猪繁殖与呼吸综合征免疫抗体水平的检测,根据2021年检测结果,通过对春防集中免疫抗体水平的综合分析,为进一步做好重大动物疫病的防控工作提供科学依据。     

巴彦淖尔市2020年动物疫病监测分析

实施口蹄疫、小反刍兽疫、高致病性禽流感、猪瘟、猪繁殖与呼吸综合征和鸡新城疫等重大动物疫病集中免疫是预防和控制动物疫病发生的有效手段,但是免疫是否能够达到有效保护水平,在畜间是否存在动物疫病病原,还需要兽医实验室进行监测评估.本文对巴彦淖尔市2020年秋季动物疫病集中免疫的效果和病原进行了采样监测,并对监测结果进行了分析...     

Heartworm in dogs in Canada in 1985

In late December 1985, 1485 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1985 and 44% of them responded. Veterinarians reported that 137,300 dogs were blood-tested to check for microfilariae and 1210 dogs were found with heartworm. Another 36 dogs were amicrofilaremic but diagnosed with heartworm disease to give the total number diagnosed in 1985 as 1247 (0.91%).

Heartworm was reported from all provinces except Prince Edward Island, Newfoundland and Saskatchewan but most (1126) of the cases were in Ontario. Southwestern Ontario continued to be the primary focus of the infection in Canada. From Quebec, 91 cases were reported mostly from and around Montreal. From Manitoba, 19 cases were reported from Winnipeg and surrounding areas. Heartworm was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 28% of the cases were observed with clinical signs of heartworm disease and 78% had a history of not having left Canada.

     

Heartworm in dogs in Canada in 1988

In late November 1988, 1581 small and mixed animal clinics and institutional veterinarians across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1988, and 46% of them responded. Veterinarians reported that 181,577 dogs were blood-tested for heartworm disease and 367 dogs were found with D. immitis microfilariae. Another 60 dogs were amicrofilaremic but diagnosed with heartworm disease to give the total number of cases diagnosed in 1988 as 441 (0.24%).     

Heartworm in dogs in Canada in 1984

In late December 1984, 1853 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1984 and 35% of them responded. Veterinarians reported that 97,794 dogs were blood-tested to check for microfilariae and 1417 dogs (1.45% of those tested) were found with heartworm. Another 34 dogs were amicrofilaremic, but were diagnosed as having heartworm disease, to give the total number diagnosed in 1984 as 1451 (1.48%). Heartworm was reported from all provinces except Prince Edward Island and Newfoundland but most (1310) of the cases were in Ontario. In Quebec, 126 cases were reported mostly from west of Montreal.

Heartworm was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 27% of the cases were observed with clinical signs of heartworm disease and 72% had a history of not having left Canada. Southwestern Ontario continued to be the primary focus of the infection.

     

Heartworm in dogs in Canada in 1991

In late November 1991, 1883 clinics in Canada were sent a questionnaire to assess the status of Dirofilaria immitis in dogs in 1991 and there was a 60.0% response. There were 344,031 dogs tested for heart-worm (HW), 627 were found infected and the prevalence of HW infection was 0.18%. There were 417 dogs with HW in Ontario, 116 in Manitoba, 38 in Quebec, 53 in British Columbia, three in Alberta, and one in Nova Scotia. In British Columbia, all of the infected dogs but one were from the Okanagan valley which, as from 1991, is a new focus of infection in Canada. Most dogs with HW had not been on preventive medication in 1990, and the prevalence among dogs tested and unprotected was 0.59%. That prevalence was considerably higher in endemic areas. Companion dogs, over three years of age and maintained primarily outdoors in rural areas, were most frequently infected. One cat was diagnosed with D. immitis and 33 dogs had Dipetalonema reconditium.     

Heartworm in dogs in Canada in 1989

In late November 1989, 1732 clinics and institutional veterinarians were sent a questionnaire to assess the status of Dirofilaria immitis, and 51.7% responded. Of 247,716 dogs tested, 394 had D. immitis microfilariae and 51 were amicrofilaremic for a total of 445 cases and heartworm prevalence of 0.17%. Most (408) of these dogs had no preventive medication and the prevalence among dogs tested and unprotected was 1.01%. That prevalence was considerably higher in endemic areas. Thirty-seven dogs with heartworm had preventive medication. Heartworm was most frequent in companion dogs over three years of age maintained outdoors in rural areas. About 75% of the cases had never left Canada, 26% had clinical signs and 125 were not treated.

Heartworm was reported from British Columbia, Manitoba, Ontario, Quebec, Nova Scotia and Newfoundland, but 383 cases were in Ontario. South-western Ontario was the primary focus of infection. There were 33 cases in Quebec and 24 in Manitoba, mainly found in and around Metropolitan Montreal and Winnipeg respectively.

     

Heartworm in dogs in Canada in 1987

In late November 1987, 1246 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1987, and 50% of them responded. Veterinarians reported that 165,428 dogs were blood tested for heartworm disease and 511 dogs were found with D. immitis microfilariae. Another 78 dogs were amicrofilaremic but diagnosed with heartworm disease to give the total number of cases diagnosed in 1987 as 589 (0.35%).     

Heartworm in dogs in Canada in 1986

In late December 1986, 1224 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1986; 46% of them responded. Veterinarians reported that 150,989 dogs were blood-tested for microfilariae and 869 dogs were found with heartworm. Another 65 dogs were amicrofilaremic but diagnosed with heartworm disease and one was found with heartworm at necropsy to give the total number diagnosed in 1986 as 935 (0.62%).

Heartworm was reported from Manitoba, New Brunswick, Ontario and Quebec, but most (810) of the cases were from Ontario. South-western Ontario continued to be the primary focus of the infection in Canada. There were 103 cases reported from Quebec, mostly from and around Montreal, and 21 cases from Manitoba, from Winnipeg and surrounding areas. Heartworm was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 33% of the cases were observed with clinical signs of heartworm disease and 81% had a history of not having left Canada.

     

Heartworm in dogs in Canada in 1983

In late December 1983, 2 800 veterinarians across Canada were sent a questionnaire in order to assess the status of heartworm disease in Canada in 1983 and 26% of them responded. Veterinarians reported that 59 504 dogs were blood-tested to check for microfilariae and 771 dogs (1.30% of those tested) were found with Dirofilaria immitis. Heartworm disease was diagnosed in all provinces except New Brunswick and Newfoundland but most (733) of the cases were in Ontario.

Heartworm disease was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 31% of the cases were observed with clinical signs of heartworm disease and 64% had a history of not having left Canada. Southwestern Ontario continues to be the focus of the infection and most of the dogs there had not left the province previously.