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NOTE: Dr. Fauci’s work as editor and author was performed outside the scope of his employment as a U.S. government employee. This work represents his personal and professional views and not necessarily those of the U.S. government.



Twentieth Edition


Copyright © 2020, 2016, 2013, 2009, 2005, 2002, 1998, 1995, 1991, 1988 by McGraw-Hill Education. All rights reserved. Printed in the United States of America. Except as permitted under the United States Copyright Act of 1976, no part of this publication may be reproduced or distributed in any form or by any means, or stored in a data base or retrieval system, without the prior written consent of the author.

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ISBN 978-1-260-45534-2

MHID 1-260-45534-3

This book was set in Palatino LT Std by Cenveo® Publisher Services. The editors were James F. Shanahan and Kim J. Davis. The production supervisor was Catherine H. Saggese; project management was provided by Tania Andrabi, Cenveo Publisher Services. The designer was Janice Bielawa; the cover designer was W2 Design.

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