scholarly journals Leptospirosis serosurvey in bovines from Brazilian Pantanal using IGG ELISA with recombinant protein LipL32 and microscopic agglutination test

2007 ◽  
Vol 38 (4) ◽  
pp. 674-680 ◽  
Author(s):  
Renata Graça Pinto Tomich ◽  
Maria Rosa Quaresma Bomfim ◽  
Matilde Cota Koury ◽  
Aiesca Oliveira Pellegrin ◽  
Luiz Alberto Pellegrin ◽  
...  
2006 ◽  
Vol 13 (10) ◽  
pp. 1166-1169 ◽  
Author(s):  
Stuart D. Blacksell ◽  
Lee Smythe ◽  
Rattanaphone Phetsouvanh ◽  
Michael Dohnt ◽  
Rudy Hartskeerl ◽  
...  

ABSTRACT The diagnostic utility of immunochromatographic (Leptotek) and enzyme-linked immunosorbent assay (ELISA; Panbio) tests for the detection of Leptospira immunoglobulin M antibodies was assessed in febrile adults admitted in Vientiane, Laos. Both tests demonstrated poor diagnostic accuracy using admission serum (Leptotek sensitivity of 47.3% and specificity of 75.5%: ELISA sensitivity of 60.9% and specificity of 65.6%) compared to the Leptospira “gold standard” microscopic agglutination test.


2017 ◽  
Vol 18 (3) ◽  
pp. 403
Author(s):  
Guntari Titik Mulyani ◽  
Sri Hartati ◽  
Yuli Santoso ◽  
Kurnia Kurnia ◽  
Agung Budi Pramono ◽  
...  

Leptospirosis is a zoonotic disease, which is caused by Leptospira interrogans. The incidence of leptospirosis in dogs varies according to region and season, and is considered as emerging infectious diseases in humans. Clinical symptoms of leptospirosis in dogs vary greatly, some dogs are asymptomatic, with mild symptoms, and others progress to severe illness until death. The study aims to determine cases of canine leptospirosis in Yogyakarta, and identify the serovar that infect them. A total of 20 dogs without symptoms, with mild symptoms, to severe symptoms of leptospirosis were collected their serum and further tested using Microscopic Agglutination Test (MAT) conducted at the Center for Veterinary Research (BBLitvet) Bogor. History of vaccination is recorded as a consideration in interpreting the MAT results. The results showed that three out of the 20 samples were positive leptospirosis. Of the three positive samples, one was identified as serovar bataviae, another one as serovar bataviae and tarrasovi, and the last as serovar bataviae, tarrasovi, ichterohaemorrhagiae, canicola, celledoni, pyrogenes, cynopteri, and rachmati, respectively. The three dogs with leptospirosis showed similar clinical symptoms i.e. Anorexia, lethargy, and fever. It can be concluded that there are cases of canine leptospirosis in Yogyakarta which is predominantly caused by Leptospira interrogans serovar bataviae. ABSTRAK Leptospirosis adalah penyakit zoonosis, yang disebabkan oleh Leptospira interrogans. Kejadian leptospirosis pada anjing bervariasi menurut wilayah dan musim, dan dianggap sebagai penyakit menular yang muncul pada manusia. Gejala klinis leptospirosis pada anjing sangat bervariasi, beberapa anjing tanpa menunjukkan gejala, dengan gejala ringan, dan yang lain melanjut menjadi penyakit yang parah sampai kematian. Penelitian ini bertujuan untuk mengetahui kasus leptospirosis pada anjing di Propinsi Daerah Istimewa Yogyakarta, dan mengidentifikasi serovar yang menginfeksinya. Sebanyak 20 ekor anjing tanpa gejala, dengan gejala ringan, sampai gejala parah leptospirosis diambil serumnya guna pemeriksaan Microscopic Agglutination Test (MAT) yang dilaksanakan di Balai Besar Penelitian Veteriner (BBLitvet), Bogor. Sejarah vaksinasi dicatat sebagai bahan pertimbangan dalam menginterpretasi hasil pemeriksaan MAT. Hasil penelitian menunjukkan bahwa tiga dari 20 sampel positif leptospirosis. Satu sampel positif terhadap serovar Bataviae, satu sampel positif terhadap serovar Bataviae dan Tarrasovi, dan satu sampel lagi positif terhadap serovar Bataviae, Tarrasovi, Ichterohaemorrhagiae, Canicola, Celledoni, Pyrogenes, Cynopteri, dan Rachmati. Anjing yang positif leptospirosis menunjukkan gejala klinis yang sama berupa anoreksia, kelemahan, dan demam. Dari hasil penelitian ini dapat disimpulkan bahwa terdapat kasus leptospirosis pada anjing di Yogyakarta yang penyebabnya dominan oleh Leptospira interrogans serovar Bataviae.


Author(s):  
Raul J. S. Girio ◽  
Luis A. Mathias

The efficiency of four Leptospira biflexa strains (Buenos Aires, Patoc 1, Rufino and São Paulo) as single antigen in the serodiagnosis in guinea-pigs experimentally infected with seven Leptospira interrogans serovars (canicola, grippotyphosa, hardjo, icterohaemorrhagiae, pomona, tarassovi and wolffi) was evaluated by the microscopic agglutination test. The four saprophytic strains were not able to reveal antibody titres in sera of guinea-pigs experimentally infected with Leptospira interrogans. Serological cross-reactions were observed between strains Patoc 1 and São Paulo and between serovars wolffi and hardjo.


2016 ◽  
Vol 8 (3) ◽  
Author(s):  
Novie H. Rampengan

Abstract: Leptospirosis is a zoonotic disease that usually occurs during the flood and is generally transmitted through rat urine. Indonesia is a country with a moderate risk of transmission of leptospirosis. Leptospirosis has a broad manifestation varying from self-limited to severe disease. The gold standard examination of leptospirosis is microscopic agglutination test. Diagnosis is divided into suspected, probable, and confirmed. Treatment consists of antibiotics and supportive agents. Generally, the prognosis is good, albeit, sequelae can occur. Case-fatality rate in different parts of the world ranging from less than 5% to 30%.Keywords: leptospirosis, diagnosis,Abstrak: Leptospirosis merupakan penyakit zoonosis yang umumnya timbul saat banjir dan umumnya ditularkan melalui kencing tikus. Indonesia merupakan negara dengan risiko sedang penularan leptospirosis. Leptospirosis memiliki manifestasi luas dari self limited hingga sakit berat. Pemeriksaan baku emas leptospirosis ialah dengan microscopic agglutination test. Diagnosis dibagi atas suspek, probable, dan konfirmasi. Terapi diberikan medikamentosa dengan antibiotik dan suportif. Prognosis umumnya baik namun bisa juga terjadi gejala sisa. Tingkat fatalitas kasus di berbagai belahan dunia berkisar <5%-30%.Kata kunci: leptospirosis, diagnosis


Author(s):  
Ali Shabestari Asl ◽  
Mohammad Bafandehzendeh ◽  
Gholamreza Abdollahpoor

Background: Leptospirosis is a zoonotic disease of worldwide significance in human beings and many animals. This zoonotic disease causes infection in dogs and other pet animals and these animals can influence human’s health. Given the unknown prevalence of leptospirosis in dogs in our area, this study was performed to investigate the sero-epidemiology of leptospirosis and evaluate the seroprevalence of Leptospira serovars in both household and stray dogs by microscopic agglutination test (MAT). Methods: Serum samples of 90 dogs in two household and stray groups (45 dogs for each group) were collected. Specimens were examined by MAT (in accordance with the procedure recommended by WHO) against antigens of serovars Canicola, Grippotyphosa, Icterohaemorrhagiae, Pomona, Hardjo, Autumnalis, and Ballum. Results: In total, 6.7% of (n=6) dogs (1 stray and 5 household dogs) had a serum titer of 1:100 or more against Leptospira serovars. Dominant serovars were Canicola (8.9%), Grippotyphosa (2.2%), and Pomona (2.2%), respectively. The antibody titer against more than one serovar was observed only in one dog. The sero-prevalence was 11.1% in household dogs and 2.2% in stray dogs. Since 4 pet dogs had been vaccinated recently, it seems that the actual percentage of infection in household dogs must be just 2.2% and actual infection in dogs including stray dogs is approximately 4.4% in Tabriz. Conclusion: Fortunately, the rate of infection in Tabriz is low and this can be due to special geographical and climatic conditions, regular and annual vaccination of household dogs against this disease, and lack of suitable conditions for the growth and survival of such micro-organisms in the environment


1998 ◽  
Vol 40 (3) ◽  
pp. 183-184 ◽  
Author(s):  
Eliete C. ROMERO ◽  
Cynthia R. CALY ◽  
Paulo H. YASUDA

The persistence of agglutinins detected by MAT has created some problems to the interpretation of the results. The aim of this study was to examine the data of serology from 70 patients with serologically confirmed diagnosis of leptospirosis by during 3-13 months after being affected with leptospires in order to elucidate the interpretation of the persistence of agglutinins detected by MAT. Sixty-one patients sera (87.14%) had titers equal or greater than 800. Of these, two individuals maintained titers of 800 thirteen months after the onset. This study showed that only one sample of sera with high titers is not reliable to determine the time at which infection occurred.


2014 ◽  
Vol 66 (3) ◽  
pp. 648-654 ◽  
Author(s):  
R.R. Nicolino ◽  
L.B. Lopes ◽  
R.O. Rodrigues ◽  
J.F.B. Teixeira ◽  
J.P.A. Haddad

The aim of this study was to evaluate the seroprevalence of leptospirosis in the dairy herds from Minas Gerais, Brazil, during the years 2009 and 2010. A total of 2,915 serum samples were collected from the lactating cows of 151 properties in eleven municipalities located in the Sete Lagoas region. The Microscopic Agglutination Test was used to detect antileptospiral agglutinins. An individual animal prevalence of 20.7% (95% CI = 17.1% - 24.3%) and a herd prevalence of 80.8% (95% CI = 73.8% = 87.7%) were determined. The most prevalent serovars were hardjoprajitno at 19.4%; hardjoprajitnostrain Norma at 17.4%; and hardjo-bovis at 17.4%. These results show the significance of the hardjo serovar in bovine leptospirosis cases in Minas Gerais.


Biomédica ◽  
2020 ◽  
Vol 40 (Supl. 1) ◽  
pp. 62-75
Author(s):  
César A. Murcia ◽  
Miryam Astudillo ◽  
Marlyn H. Romero

Introducción. Los perros de trabajo pueden infectarse con diversas serovariedades de Leptospira que se mantienen en sus túbulos renales e intersticios por mucho tiempo, por lo que se convierten en portadores y fuentes de infección para otros huéspedes.Objetivo. Establecer la prevalencia de Leptospira spp. en perros de trabajo vacunados y en población humana con riesgo ocupacional de seis unidades policiales en Colombia.Materiales y métodos. Mediante tres instrumentos estructurados, se evaluaron 92 perros de trabajo con inmunización previa contra Leptospira spp. (65 machos y 27 hembras) y 69 personas de seis unidades policiales de los municipios de Manizales, Pereira, Armenia, Ibagué, Tuluá y Cali. Se obtuvieron muestras sanguíneas de las personas y de los perros, las cuales se evaluaron mediante la prueba de microaglutinación (Microscopic Agglutination Test, MAT) en 24 serogrupos. Se hizo un examen clínico de los perros y se obtuvieron muestras de orina para urocultivo.Resultados. La seroprevalencia de leptospirosis en las personas fue de 2,9 % (n=2) y en los perros de 57,61 % (n=53). Los serogrupos más prevalentes en los perros fueron Leptospira canicola y L. panama. El urocultivo fue positivo en 58,7 % (54/92) de las muestras y se encontró asociación estadísticamente significativa entre la edad de los perros (≥10 años; p=0,043) y la ubicación de la unidad policial (p=0,016).Conclusión. Las características epidemiológicas de la leptospirosis en los perros sugieren una presentación endémica de la infección. Se requieren algoritmos diagnósticos sensibles y específicos para investigar la leptospirosis canina y diferenciar los anticuerpos vacunales de la infección natural.


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