| | | | | Experimental host and age | Passage history and strain | Inoculation Route-Dose | Evidence of infection | AST (days) | Titer log10/ml | |
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| | Embryonated eggs, 10 days of age, die within 18-36 hrs. following any route of inoculation. All of common laboratory animals including guinea pigs, rabbits, hamsters, and monkeys are susceptible to infection, have a viremia and die if inoculated ic. | | Mammals: horses and a number of wild mammals including several species of rodents and bats have been experimentally infected. Viremia is usually of low order but in some rodents may be sufficient to infect mosquitoes. This likewise applies to snakes which may retain virus through a period of hibernation. Snakes transmit to offspring (9). Birds: Wide range of wild bird species are susceptible and circulate virus in high titer. Death and height of viremia varies with species and age. | | Consult References 7,8,9. | | | | Mice (nb) | | ic .01 | Encephalitis and death | 2-6 | 7-8 | | | Mice (nb) | | ip .03 | Encephalitis and death | | 7-8 | | | Mice (nb) | | sc | | | | | | Mice (wn) | | ic .03 | Encephalitis and death | | | | | Mice (wn) | | ip .09 | Encephalitis and death | | 7-8 | | | chick (<24 hr) | | ic,sc .03 | Encephalitis and death | | 8-9 | |
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