Not AvailableThe importance of Trypanosoma evansi as the etiological agent for surra is often overlooked
due to difficulty in accurate diagnosis of the disease. In the present study, an antibody-ELISA
was developed using whole cell lysate antigen prepared from purified trypanosomes and
used for seroprevalence study of T. evansi in equids. A total of 3695 equids were surveyed
and blood samples were collected from each animal during September 2009 to August 2011.
Out of these, 420 serum samples were found positive for presence of antibodies against T.
evansi collected from equids of six agro-climatic zones of North and North-western regions
of India comprising eight states viz., Gujarat (36/479), Haryana (11/275), Himachal Pradesh
(14/83), Jammu and Kashmir (32/221), Punjab (1/38), Rajasthan (90/1148), Uttarakhand
(141/753), and Uttar Pradesh (65/330). The maximum seroprevalence (19.69%) for T. evansi
infection was observed in equids of Uttar Pradesh state with an overall seroprevalence of
11.36% in North and North-western regions of India. The results indicated that surra is
endemic in equids of North and North-western parts of India.Not Availabl
