An acute but mild exanthematous disease caused by rubella virus (Rubivirus family Togaviridae), with enlargement of lymph nodes, but usually with little fever or constitutional reaction; a high incidence of birth defects in children results from maternal infection during the first trimester of fetal life (congenital rubella syndrome).
[L. rubellus, fem. -a, reddish, dim. of ruber, red]
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Examples: glitazone, GI cocktail, etc.