JOURNAL OF PARASITIC DISEASES (ISSN : 0971-7196) Patron Prof. M. Shamim Jairajpuri, President, <strong>The</strong> <strong>Indian</strong> <strong>Society</strong> <strong>for</strong> <strong>Parasitology</strong> & Professor, Department of Zoology Aligarh Muslim University, Aligarh - 202002, India Editor-in-Chief Prof. Nancy Malla, Department of <strong>Parasitology</strong> PGIMER, Chandigarh Managing Editor Dr. M.L. Dubey Department of <strong>Parasitology</strong> PGIMER, Chandigarh Dr. A.B. Chowdhury Kolkata Dr. N.K. Ganguly New Delhi Dr. V.S. Chauhan, New Delhi Dr. N.J. Shetty, Bangalore Dr. B.C. Harinath, Sevagram Dr. Durdana S. Jairajpuri, Aligarh Dr. Q.H. Baqri, Jodhpur Dr. D.P. Haldar, Kalyani Dr. Md. Hafeez, Tirupati Dr. V.M.L. Srivastava, Lucknow Dr. S.C. Parija, Pondicherry Advisory Board Dr. R.C. Mahajan Chandigarh Editorial Board Dr. V.P. Sharma New Delhi Dr. G.P. Dutta Lucknow Dr. Chetan Chitinis, New Delhi Dr. R. Madhavi, Vishakhapatnam Dr. A.R. Khan, Srinagar Dr. Sobhna Sharma, Mumbai Dr. Buddhadev Mana, Kolkata Dr. Ch. Dhanachand, Manipur Dr. Jagdish Mahanta, Dibrugarh Dr. B. Jadhav, Aurangabad Dr. R. Madhubala, New Delhi Journal of Parasitic Diseases is published biannually by the <strong>Indian</strong> <strong>Society</strong> <strong>for</strong> <strong>Parasitology</strong> in June and <strong>December</strong> in each calender year. <strong>The</strong> subscription price <strong>for</strong> libraries and other multi reader organizations <strong>for</strong> each number is Rs. 400 in India and U.S. $ 100 elsewhere. Subscription by Demand Draft in favour of '<strong>The</strong> <strong>Indian</strong> <strong>Society</strong> <strong>for</strong> <strong>Parasitology</strong>' should be sent to Dr. J.K. Saxena, Secretary, <strong>The</strong> <strong>Indian</strong> <strong>Society</strong> <strong>for</strong> <strong>Parasitology</strong>, Division of Biochemistry, Central Drug Research Institute, Chattar Manzil, Lucknow - 226 001 (India). <strong>The</strong> <strong>Indian</strong> <strong>Society</strong> <strong>for</strong> <strong>Parasitology</strong> Executive Committee (2002-2004) President Prof. M.S. Jairajpuri, Aligarh Vice-Presidents Dr. J. Mahanta, Dibrugarh Dr. V.M.L. Srivastava, Lucknow Secretary Dr. J.K. Saxena, Lucknow Jt. Secretary Dr. T. Adak, New Delhi Treasurer Dr. L.M. Tripathi, Lucknow Members Prof. Irfan Ahmad, Aligarh Prof. Q.H. Baqri, Jodhpur Dr. A.P. Dash, Bhubaneshwer Dr. Neeru Singh, Jabalpur Prof. N.J. Shethy, Bangalore Dr. V.S. Chauhan, New Delhi Dr. Prakash Babu, Hyderabad Prof. Kaleysa Raj, Trivandrum Dr. B.V. Jadhav, Aurangabad Dr. Neelima Gupta, Bareilly Statements and opinions expressed in the Journal of Parasitic Diseases or in the presentations during the regular meeting of the <strong>Indian</strong> <strong>Society</strong> <strong>for</strong> <strong>Parasitology</strong> are those of the author(s) and do not necessarily reflect the official position of the <strong>Society</strong>. <strong>The</strong> Editorial Board, Publisher and the <strong>Society</strong> disclaim any responsibility <strong>for</strong> the accuracy of statements made by the contributors. Copyright ©2003 <strong>The</strong> <strong>Indian</strong> <strong>Society</strong> <strong>for</strong> <strong>Parasitology</strong>
JOURNAL OF PARASITIC DISEASES <strong>Vol</strong>ume <strong>27</strong>, Number 2, Dec. 2003 OFFICIAL ORGAN OF THE INDIAN SOCIETY FOR PARASITOLOGY Head Office : Central Drug Research Institute, Lucknow - 226 001, India Editorial Office : Department of <strong>Parasitology</strong>, Post Graduate Institute of Medical Education and Research, Chandigarh-160 012 India Fax : 0172-<strong>27</strong>44401, E-mail : medinst@pgi.chd.nic.in