Wild type measles virus attenuation independent of type I IFN

Table 4 Inhibitory efficacy of a type I IFN pre-treatment on Vero/CD150 cells before MV infection

		Concentration of IFN added (IU/mL)
Time before infection	Strain	5000	1000	500	100
8 h	G954-PBL	100*	92	95	63
	G954-V13	100	95	89	56
	Ed-Zagreb	100	79	65	58
24 h	G954-PBL	100	100	100	95
	G954-V13	100	100	100	67
	Ed-Zagreb	100	100	100	43
48 h	G954-PBL	100	100	100	91
	G954-V13	100	100	100	80
	Ed-Zagreb	100	100	100	81

* Inhibition indices were calculated as follow: 100 × [1 – (PFU(type I IFN = x)/PFU(type I IFN = 0)]

ISSN: 1743-422X