human parvovirus B19


See under fifth disease.

Definition for human parvovirus b19 (2 of 2)

fifth disease

[ fifth di-zeez ]
/ ˈfɪfθ dɪˌziz /


Pathology. a mild infection, most often seen in children or young adults, caused by a small virus (the human parvovirus B19) and marked by a blotchy rash on the cheeks, arms, and legs.

Origin of fifth disease

so called because it was the fifth in a classification scheme of childhood eruptive diseases
Also called er·y·the·ma in·fec·ti·o·sum [er-uh-thee-muh in-fek-shee-oh-suh m] /ˌɛr əˈθi mə ɪnˌfɛk ʃiˈoʊ səm/ Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for human parvovirus b19

fifth disease


a mild infectious disease of childhood, caused by a virus, characterized by fever and a red rash spreading from the cheeks to the limbs and trunkAlso called: slapped-cheek disease Technical name: erythema infectiosum

Word Origin for fifth disease

C20: from its being among the five most common childhood infections
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for human parvovirus b19

fifth disease


erythema infectiosum
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.