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Meaning of vivax malaria

vi'vax malar"ia

Pronunciation: (vī'vaks), [key]
— Pathol. Pathol.
  1. the most common form of malaria, caused by the protozoan Plasmodium vivax and marked by the occurrence of attacks every other day.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.