Furthermore, continuous injection of purified recombinant human IFN-α suppressed blood stage parasitemia for two P. yoelii strains (265 BY and 17XNL) by inhibiting the production of reticulocytes, which were preferentially invaded by these parasite strains, but not for the strain of P. vinckei petteri that infects only mature red blood cells (Vigario et al., 2001). Here, IFNA1 is linked to parasitic infectious disease.