| | | | | Experimental host and age | Passage history and strain | Inoculation Route-Dose | Evidence of infection | AST (days) | Titer log10/ml |
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| | * Virus titer in brain tissues of infected animals; allantoic fluid from infected chick embryo eggs were titrated for virus content. | | Mice (nb) | B-230 strain, SM2 | ic | Paralysis, death | 2 | 7.6 * | | Mice (nb) | 5.0 dex PFU/ml(3) | ip | Paralysis, death | 2-3 | | | Mice (nb) | | sc | | | | | Mice (wn) | | ic | Paralysis, death | 8-10 | 7.3 | | Mice (wn) | | ip | None | | | | hamsters (yg ad) | | | Paralysis, death | 4-6 | 6.8 | | chick embryo (9-11 day) | | al.c. | Hemorrhage, death | 1-2 | 8.1 | | | | am.s. | Hemorrhage, death | 1-2 | 8.9 | | | | ys | Hemorrhage, death | 1-2 | 8.4 | | chick (1-3 day) | | ic | Paralysis, death | 2-4 | 7.4 | | | | ip | Paralysis, death | 2-4 | | | | | oral | Paralysis, death | 2-4 | 7.8 | | | | | | | | | | | | | | |
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