Opportunistic Protozoa In Humans

Advances in PARASITOLOGY Opportunistic Protozoa in Humans VOLUME 40 Editorial Board C. Bryant Division of Biochemistry and Molecular Biology, The Australian National University, Canberra, ACT 0200, Australia M. Coluzzi Director, Istituto di Parassitologia, Universith Degli Studi di Roma “La Sapienza”, P. le A. Moro 5 , 00185 Roma, Italy C. Combes Laboratoire de Biologie Animale, UniversitC de Perpignan, Centre de Biologie et d’Ecologie Tropicale et MCditerranCenne, Avenue de Villeneuve, 66860 Perpignan Cedex, France S.L. James Chief, Parasitology and Tropical Diseases Branch, Division of Microbiology and Infectious Diseases, National Institute for Allergy and Infectious Diseases, Bethesda, MD 20892-7630, USA W.H.R. Lumsden 16A Merchiston Crescent, Edinburgh, EHlO 5AX, UK Lord Soulsby of Swaffham Prior Department of Clinical Veterinary Medicine, University of Cambridge, Madingley Road, Cambridge, CB3 OES, UK K. Tanabe Laboratory of Biology, Osaka Institute of Technology, Ohmiya, Asahi-Ku, Osaka 535, Japan P. Wenk Institut fur Tropenmedizin, Eberhard-Karls-Universitat Tubingen, D7400 Tubingen 1, Wilhelmstrasse 3 1, Germany Advances in PARASITOLOGY Opportunistic Protozoa in Humans Series editors J.R. BAKER, R. MULLER and D. ROLLINSON Guest editor S. TZIPORI Tufts University School of Veterinary Medicine, North Grafton, MA, USA VOLUME 40 ACADEMIC PRESS San Diego London Boston New York Sydney Tokyo Toronto ACADEMIC PRESS 525 B Street, Suite 1900, San Diego, California 92101-4495, USA http://www.apnet.com ACADEMIC PRESS LIMITED 24/28 Oval Road LONDON NW 1 7DX http://www.hbuk.co.uk/ap/ Copyright 0 1998, by ACADEMIC PRESS LIMITED This book is printed on acid-free paper All Rights Reserved No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher A catalogue record for this book is available from the British Library ISBN 0-12-031740-0 Typeset by J&L Composition Ltd, Filey, North Yorkshire Printed in Great Britain by MPG Books Limited, Bodmin, Cornwall 98 99 00 01 02 03 MP 9 8 7 6 5 4 3 2 1 CONTRIBUTORS TO VOLUME 40 A.M. CEVALLOS, Division of Geographic Medicine and Infectious Diseases, New England Medical Center, Tufts University School of Medicine, Boston, MA 021 11, USA J.H. CRABB, ImmuCell Corporation, Portland, ME 04103, USA E.S. DIDIER,Department of Microbiology, Tulane Regional Primate Research Center, Covington, LA 70433, USA C.R. FRICKER, Thames Water Utilities, Reading RG2 OJN, UK R.H. GILMAN, Departamento de Patologia, Universidad Peruana Cayetano Heredia, Lima, Peru and Department of International Health, School of Hygiene, Johns Hopkins University, Baltimore MD21205, USA J.K. GRIFFITHS, Division of Infectious Diseases, Tufts University School of Veterinary Medicine, North Grafton, MA 01536, USA and Department of Family Health and Community Medicine, Tufts University School of Medicine, Boston, MA 021 11, USA D.P. KOTLER, Gastrointestinal Division, Department of Medicine, St Lukes - Roosevelt Hospital Center, College of Physicians and Surgeons, New York, NY 10032, USA J.M. ORENSTEIN, Department of Pathology, George Washington University