herald wave phenomenon
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
herald wave phenomenonEpidemiology The finding that the strains of influenza virus present in a population at the end of one season's epidemic are the same strains responsible for the next season's influenza syndromes
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.