Endemic status of Trypanosoma evansi infection in a horse stable of eastern region of India – a field investigation

Laha, R.; Sasmal, N. K.

doi:10.1007/s11250-007-9107-0

Cited by 25 publications

(4 citation statements)

References 8 publications

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“…It has the largest geographical distribution and widest range of hosts amongst the pathogenic trypanosomes (Nurulaini et al 2007;Laha and Sasmal 2008;Dargantes et al 2009). Recently, a report indicated that humans may be infected with T. evansi (Truc et al 2007).…”

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confidence: 99%

Immune responses to haemorrhagic septicaemia (HS) vaccination in Trypanosoma evansi infected buffalo-calves

Singla

Juyal

Sharma

2009

Trop Anim Health Prod

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To assess the immunosuppressive effect of Trypanosoma evansi infection in buffalo-calves on immune responses to heterologous antigen, the study was planned to examine the responses of haemorrhagic septicaemia vaccination in simultaneously and previously (80 days before vaccination) T. evansi-infected buffalo-calves. Eight buffalo-calves were divided into three groups. Buffalo-calves of group A (n = 3) were previously (80 days before primary vaccination with haemorrhagic septicaemia [HS] vaccine) infected with T. evansi (1 x 10(7) tryps.calf(-1); sc) and that of group B (n = 3) were infected with T. evansi (1 x 10(7) tryps.calf(-1); sc) on the day of primary vaccination with HS vaccine. Two healthy uninfected control calves given only HS vaccine were kept in group C. All the buffalo-calves were given a booster dose of vaccine 21 days post-primary vaccination (PPV). Twenty eight days PPV, animals of group A were given trypanocidal quinapyramine prosalt at 6.66 mg kg(-1). Immunosuppressive effect of T. evansi infection was evident from day 7 PPV with HS vaccine. The effect was more pronounced in previously T. evansi-infected buffalo-calves as compared with simultaneously infected buffalo-calves. Group A buffalo-calves appeared to have recovered from the immunosuppressive effect after 28 days post-trypanocidal treatment as observed by humoral and cell-mediated immune responses. Immunosuppressive effect to HS vaccination was observed in T. evansi-infected buffalo-calves, and trypanocidal therapy enabled the calves to mount the responses similar to uninfected controls.

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confidence: 99%

Immune responses to haemorrhagic septicaemia (HS) vaccination in Trypanosoma evansi infected buffalo-calves

Singla

Juyal

Sharma

2009

Trop Anim Health Prod

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“…Other publications reported higher seroprevalence rates, 73% were found in Brazil using IFAT (Herrera et al, 2004) and 92% were demonstrated in Philippine (Dargantes et al, 2009). Some studies report lower seroprevalence, as is the case in Malaysia (13%) (ELshafie et al, 2013) and India (27%) (Laha and Sasmal, 2008).…”

Section: Discussionmentioning

confidence: 93%

Prevalence of Trypanosoma evansi in horses (Equus caballus) and donkeys (Equus asinus) in El-Bayadh district, southwestern Algeria

Benfodil

Ansel

Abdallah

et al. 2019

J Hellenic Vet Med Soc

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Trypanosoma evansi is a parasite that causes surra in a variety of wild and domestic animals and is mainly transmitted by biting flies in Africa, Asia and Latin-America. Horses infected by Trypanosoma evansi present a chronic weight loss, icterus, oedema, anemia, abortions and neurological troubles. Due to this parasite, cases of human trypanosomiosis have been reported in different countries by contacting with infected animals. In this study, 206 healthy equines (177 horses and 29 donkeys) from El-Bayadh district, located in southwest Algeria, were tested for the presence of parasites in blood using Giemsa-stained blood films and for the presence of antibodies against T. evansi using CATT /T. evansi. While none of the equines showed detectable parasites in the blood, the individual seroprevalence of T. evansi was found to be 46.6% (CI 95%, 40.7-54.4%). Out of 98 positives samples, 56.1% (55/98) were shown at level 1 (+), 27.5% (27/98) at level 2 (++) and 16.3% (16/98) at level 3 (+++). The results show that out of 177 tested horses, 80 were seropositive to T. evansi, 45.2% (CI 95%, 37.8-52.5%) and out of 29 tested donkeys, 18 were seropositive to T. evansi, 62.1% (CI 95%, 44.4-79.7%). A questionnaire for the owners, targeted to associate risk factors for surra in horses, showed that environmental factors that are favorable for Tabanids, such as water and vegetation, but also promiscuity with dromedaries were positively associated with the seroprevalence rate in the horses. El-Bayadh district is a highly endemic region for surra in Algeria.

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“…Overall species wise sero-prevalence survey in Karnataka showed the dominant statistics with buffalo of 25 % S.P, followed by cattle with 18.03 % S.P, Donkey with 5.5% S.P and Horse with 6.25% S.P (Table I). 24 . In Karnataka, no significant variations were observed between sero-positivity and negativity among two tests (χ²=0.079, df=1, p>0.05).…”

Section: Resultsmentioning

confidence: 99%

A pilot sero-survey for surra in livestock in Karnataka by ELISA using flagellar antigen of Trypanosoma evansi

Jose¹,

P²,

R³

et al. 2015

IJFAS

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Background: Trypanosoma evansi causes trypanosomosis or ‘surra’ in domestic and wild animals and is transmittedby haematophagus tabanid fly. For successful control of the disease, it is important to detect the carrier animalsfollowed by successive treatment. For this purpose a reliable serological test is useful for mass screening of theanimals. Methodology: In the present study, emphasis was given to address the need for the development of a massscreening serological test by using purified flagellar antigen of T. evansi for the detection of antibody against surra.Also a pilot sero-epidemiological study for trypanosomosis in different species using purified flagellar (FLA) antigenbased indirect enzyme linked immunosorbant assay (I-ELISA) was conducted and compared with standard CATT/T.evansi test. The diagnostic potentiality of purified FLA antigen based I-ELISA (FLA-I-ELISA) was evaluated using197 sera samples from field animals including cattle, buffaloes, horses and donkeys. Results: The test showed anoverall 14.72% sero positivity (S.P). Among cattle, S.P was found to be 18.03%, in buffalo 25%, in horse 6.25% andin donkeys 5.5%. Conclusion: Thus, epidemiological survey were done with purified FLA antigen based I-ELISAtest in Karnataka reveals that, buffalo samples showed the maximum sero positivity for trypanosomosis.

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Endemic status of Trypanosoma evansi infection in a horse stable of eastern region of India – a field investigation

Cited by 25 publications

References 8 publications

Immune responses to haemorrhagic septicaemia (HS) vaccination in Trypanosoma evansi infected buffalo-calves

Immune responses to haemorrhagic septicaemia (HS) vaccination in Trypanosoma evansi infected buffalo-calves

Prevalence of Trypanosoma evansi in horses (Equus caballus) and donkeys (Equus asinus) in El-Bayadh district, southwestern Algeria

A pilot sero-survey for surra in livestock in Karnataka by ELISA using flagellar antigen of Trypanosoma evansi

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