应用ELISA方法检测多种动物弓形虫抗体

为了解东莞市多种动物弓形虫感染的情况,采用ELISA方法对采自东莞市生猪屠宰场的猪血清3238份和饲养的犬血清299份、猫血清33份进行抗体检测,结果为猪血清弓形虫抗体阳性98份,抗体阳性率为3.03%,犬血清抗体阳性25份,抗体阳性率8.36%,猫血清抗体阳性4份,抗体阳性率12.12%。结果表明猪、犬和猫都存在不同程度的弓形虫感染,其中猫的感染率最高,其次为犬,弓形虫病防治需要采取综合防控措施。     

笼养黑熊弓形虫病血清流行病学调查

为了调查延边某熊场黑熊弓形虫感染情况,共采集血清样本73份,用间接ELISA法检测弓形虫血清抗体。结果表明:在73份血清样本中,检出21份阳性血清,血清抗体总阳性率为28.8%。在43份雄性黑熊血清中,检出9份阳性血清,抗体阳性率为20.9%;在30份雌性黑熊血清中,检出12份阳性血清,抗体阳性率为40.0%,但两者之间不存在统计学差异(P0.05)。本次调查证实该熊场黑熊存在弓形虫感染,对人畜造成潜在的危害。     

甘肃省玛曲牦牛弓形虫血清流行病学调查及风险因素分析

为查明甘肃省玛曲县牦牛弓形虫感染情况并分析影响其感染的风险因素,采用改良凝集试验(MAT)法检测了该地区的610份牦牛血清,并应用流行病学、统计学方法对影响牦牛弓形虫感染的因素进行了分析。结果:牦牛弓形虫抗体阳性率为20.00%,年龄和季节是影响牦牛感染弓形虫的风险因素,胎次因素对母牦牛弓形虫感染的影响不明显(P0.05)。此次调查显示牦牛弓形虫抗体滴度最高可达1∶3 200,由此可知,甘肃省玛曲地区牦牛弓形虫感染率较高且感染强度较大。因此应对本地区的牦牛弓形虫病采取适当的控制措施,以确保当地牦牛养殖业的健康发展。     

云南临沧市牛羊犬弓形虫病血清学调查报告

为了解临沧市牛、羊和犬弓形虫感染情况,分别采集临沧市的临翔区、双江县、凤庆县和沧源县农户、养殖场和餐馆的动物血样品284份(牛143份、羊81份、犬60份),分离血清,采用间接血凝试验(IHA)进行弓形虫抗体检测。结果表明,弓形虫抗体阳性53份,阳性率18.6%,其中牛血清弓形虫抗体阳性20份,阳性率为14%;羊血清弓形虫抗体阳性19份,阳性率为23.5%;犬血清弓形虫抗体阳性14份,阳性率为23.3%。综上所述,临沧市牛羊犬弓形虫抗体阳性率较高,有兽医公共卫生安全隐患。     

2021—2022年铜仁市碧江区猪场弓形虫的血清学调查

为初步调查碧江区部分猪场弓形虫病感染情况，2021年6月—2022年6月采用间接血凝试验(IHA)检测碧江区30个猪场850份血清样品的弓形虫抗体阳性率。90份血清样品检测为弓形虫抗体阳性，平均阳性率为10.59%(90/850);5个乡(镇)来源猪血清样品弓形虫抗体阳性率分别为7.92%、4.38%、10.00%、21.67%、13.33%。不同发育阶段猪群弓形虫抗体阳性率存在差异，其中经产母猪较其他年龄阶段猪群阳性率高；经常出现野猫和老鼠的猪场来源样品弓形虫抗体阳性率高于出没频率低的猪场。研究结果表明：碧江区部分猪场弓形虫感染情况较为严重，猪场应定期进行弓形虫抗体监测，同时注意灭鼠和驱猫等工作。     

西藏部分地区黄牛弓形虫血清检测报告

应用间接血凝试验(Indirect hemagglutination test,IHA)对在2013年间采自西藏的116份黄牛血清进行弓形虫血清学检测。结果检出阳性血清14份,阳性率为12.07%。统计数据表明西藏黄牛群中存在弓形虫的感染。本研究旨在摸清西藏黄牛群中弓形虫感染情况,为该病的防治提供理论依据。     

永善县云南半细毛羊弓形虫病血清学调查

为了解永善县云南半细毛羊的弓形虫感染情况,利用弓形虫间接血凝试验(IHA)检测205份云南半细毛羊血清弓形虫抗体.结果显示:92份血清阳性,总阳性率为44.9％,其中雄性和雌性羊血清阳性率分别为50.0％、43.8％,不同性别云南半细毛羊弓形虫抗体阳性率差异不显著(P>0.05);年龄小于12月龄的羊血清样品阳性率为4...     

锡林郭勒盟绵羊弓形虫病血清学调查

为了解内蒙古地区绵羊感染弓形虫的情况,于羊肉主产区之一的锡林郭勒盟的8个旗县共采集绵羊全血624份,分离血清后采用间接ELISA方法检测绵羊血清中的弓形虫抗体。结果显示:所检样品总体阳性率为12.02%,其中年龄和饲养方式(舍饲/放牧)是绵羊感染弓形虫的风险因素(P0.01)。研究结果为地区性弓形虫病防控及居民食品安全保障提供了数据上的参考。     

内蒙古部分地区放牧牛羊弓形虫血清学调查

[目的]了解内蒙古部分地区放牧牛羊弓形虫病感染情况。[方法]采用间接血凝试验(IHA)对阿拉善盟及呼伦贝尔市随机采集的286份放牧牛羊血清样本进行弓形虫抗体检测。[结果]绵羊血清弓形虫抗体总阳性率为1.68%,其中,阿拉善盟阳性率为4.84%,呼伦贝尔市阳性率为0.56%;经统计学分析,两个地区的绵羊血清弓形虫抗体阳性率差异不显著(P>0.05);牛血清弓形虫抗体总阳性率为0。[结论]内蒙古主要牧区放牧绵羊存在弓形虫感染,应引起足够的重视,并制定相应的弓形虫病防治措施。     

云南省边境地区猪弓形虫血清流行病学调查

为了解云南省边境地区猪弓形虫感染情况及流行趋势,对云南省3个边境地区生猪屠宰场猪血清进行弓形虫检测,采集猪血液样本631份,应用猪用弓形虫抗体检测试剂盒检测血清中弓形虫抗体。结果表明:云南省边境地区猪血清中弓形虫IgG抗体总阳性率为2.2%,其中中越、中老、中缅边境地区猪弓形虫IgG抗体阳性率分别为3.1%(7/229)、2.8%(6/213)、0.5%(1/189),各地区间弓形虫感染阳性率差异不显著(P0.05)。说明云南边境地区市售猪肉及其副产品存在弓形虫,应减少或改变生食或半生食猪肉及其副产品,以降低弓形虫感染风险。     

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.