| Mice (nb)     |       80-39; E6 P-4       |       ic  0.01       |       Develop viremia, antibodies, die       |       14       |       6.3       |  | 
| Mice (nb)     |   |       ip  0.1       |       Develop viremia and antibodies       |  |  |  | 
| Mice (nb)     |   |       sc  0.1       |       Develop viremia and antibodies       |  |  |  | 
| Mice (wn)     |   |       ic  0.03       |       Develop viremia and antibodies       |  |  |  | 
| Mice (wn)     |   |       ip  0.3       |       Develop viremia and antibodies       |  |  |  | 
| Balb C mice (nb)     |   |       ic  0.01       |       Develop viremia, antibodies; die       |       12       |       6.8       |  | 
| Balb C mice (nb)     |   |       ip  0.1       |       Develop viremia and antibodies       |  |  |  | 
| Balb C mice (wn)     |   |       ic  0.03       |       Develop viremia and antibodies       |  |  |  | 
| Wistar rat (nb)     |       Wistar rat P-3 Strain 80-39       |       ic  0.02       |       Develop viremia, antibodies, die       |       21       |       3.0        |  | 
| Wistar rat (wn)     |   |       ic  0.03       |       Develop viremia and antibodies       |  |  |  | 
| Wistar rat (wn)     |   |       ip  0.5       |       Develop viremia and antibodies       |  |  |  | 
| Apodemus agrarius (wn)     |   |       ic  0.01       |       Develop viremia and antibodies       |  |  |  | 
| Apodemus agrarius (wn)     |   |       im  0.3       |       Develop viremia and antibodies       |  |  |  | 
| Rattus norvegicus (wn)     |   |       ic  0.03       |       Develop viremia and antibodies       |  |  |  | 
| Rattus norvegicus (wn)     |   |       im  0.5       |       Develop viremia and antibodies       |  |  |  | 
| Rattus norvegicus (wn)     |   |       ic  0.03       |       Develop viremia and antibodies       |  |  |  | 
| Rattus norvegicus (wn)     |   |       im  0.5       |       Develop viremia and antibodies       |  |  |  | 
| Wistar female Rattus norvegicus     |   |   |       12-16 wks. old, infected by inhalation (29).       |  |  |  |