| Plasmodium relictum | A species of worldwide distribution found in pigeons, doves, ducks, swans, and a great variety of other birds; it is highly pathogenic in pigeons, game birds, and others to which this strain is poorly adapted, causing anaemia, weakness, and often death. (05 Mar 2000) |
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| plasmodium vivax | A protozoan parasite that causes vivax malaria (malaria, vivax). This species is found almost everywhere malaria is endemic and is the only one that has a range extending into the temperate regions. (12 Dec 1998) |
| plasmodium yoelii | A species of plasmodium causing malaria in rodents. (12 Dec 1998) |