Table 1. Bats maintained in hibernation for 6 weeks.
Serological and survival results of L. noctivagans inoculated with homologous or heterologous RABV via SC or IM inoculation. Regardless of the virus or route, the titer of inoculum was 104TCID50.
Bat group and no. | Virus/ route | Incubation time (dpi)a | Incubation time following arousalb | qPCR results for oral swabs (dpi)c | Ct value of oral swab | Status of bat | Infecting Variant | Rabies virus titer VNA (IU/ml) days post primary inoculation primary inoc | |||
---|---|---|---|---|---|---|---|---|---|---|---|
Group 1 | LnV1/IM | Pre inocd | 14 days post hibernation | 30 days post hibernation | 45 days post challengee | ||||||
1 | N | A | ≤LOD | ≤LOD | 2.0 | ≤LOD | |||||
2 | 50 | 27(18) | P (45) | 29 | D | LnV1 | ≤LOD | 0.525 | 2.0g | ||
3 | 66 | 19(42) | N | >40i | D | LnV1 | ≤LOD | 4.0g | |||
4 | 80 | 33 (42) | P (71) | 29 | D | LnV1 | ≤LOD | ≤LOD | ≤LODg | ||
5 | N | A | ≤LOD | ≤LOD | ≤LOD | ≤LOD | |||||
Group 2 | EfV2/IM | ||||||||||
6 | N | A | ≤LOD | NDh | >9.6 IU | 6.2 | |||||
7 | N | A | ≤LOD | ≤LOD | ≤LOD | ≤LOD | |||||
8 | 137 | 90(42) | P (136) | 30 | D | EfV2 | ≤LOD | ≤LOD | >16 IUg | ||
9 | N | A | ≤LOD | ≤LOD | 2.8 | 8.8 | |||||
10 | N | A | ≤LOD | ≤LOD | ≤LOD | 1.7 | |||||
Group 3 | MlV1/IM | ||||||||||
11 | 70 | 23 (42) | N | >40 | D | MlV1 | ≤LODf | ≤LOD | ≤LODg | ||
12 | N | A | ≤LOD | ≤LOD | ≤LOD | 3.1 | |||||
13 | N | A | ≤LOD | ≤LOD | ≤LOD | 4.6 | |||||
14 | N | A | ≤LOD | 8.3 | 4 | ≤LOD | |||||
15 | N | A | ≤LOD | ≤LOD | ≤LOD | ≤LOD |
ND Not done; serum sample was inadequate for testing
a Days post inoculation
b Negative or positive (dpi oral swabs were positive)
c The survival status of the bat is denoted A for alive and D for deceased
d Bats were bled prior to rabies inoculation
e Days post challenge. Bats were challenged 9 mo following the first inoculation
f≤LOD = Below the limit of detection
g denotes terminal bleed
h This bat was caught more than 150 days before clinical signs developed. Site of inoculation unknown
i. Ct values >40 are considered negative