In 1957 the University of London found that dietary cod liver oil suppressed the multiplication of Plasmodium berghei in mice
D.G. Godfrey, Antiparasitic action of dietary cod liver oil upon Plasmodium berghei and its reversal by vitamin “E” Experimental Parasitology Volume 6, Issue 6, November 1957, Pages 555-56
of Babesia rodhaini
D.G Godfrey The influence of dietary cod liver oil and vitamin E upon Babesia rodhaini in mice Experimental Parasitology Volume 6, Issue 6, November 1957, Pages 555-565
and on Trypanosoma...