Table 1 IFA end-point titers for six Rickettsia species in horses experimentally infected with Rickettsia rickettsii
From: Experimental infection of horses with Rickettsia rickettsii
Horse | Days post-infection | IFA titers for Rickettsia antigens | |||||
|---|---|---|---|---|---|---|---|
| Â | Â | R. rickettsii | R. parkeri | R. amblyommii | R. rhipicephali | R. bellii | R. felis |
1 | 0 | – | – | – | – | – | – |
1 | 12 | 128 | 128 | 64 | – | 64 | – |
1 | 18 | 2,048 | 256 | 256 | 256 | 256 | 128 |
1 | 86 | 128 | 128 | 64 | 64 | 64 | – |
1 | 177 | 64 | 64 | – | – | – | – |
2 | 0 | – | – | – | – | – | – |
2 | 12 | 512 | 256 | 256 | 128 | 256 | – |
2 | 20 | 8,192 | 4,096 | 2,048 | 2,048 | 4,096 | 1,024 |
2 | 611 | 512 | 256 | – | – | – | – |
2 | 772 | 256 | 128 | – | – | – | – |
3 | 0 | – | – | – | – | – | – |
3 | 10 | 256 | 256 | 64 | 64 | 64 | – |
3 | 20 | 8,192 | 2,048 | 1,024 | 2,048 | 512 | 2,048 |
3 | 366 | 256 | 128 | 128 | 128 | – | 128 |
4 | 0 | – | – | – | – | – | – |
4 | 12 | 128 | 64 | – | – | – | – |
4 | 24 | 512 | 256 | 128 | 128 | 128 | 256 |
4 | 100 | 256 | 128 | 64 | – | – | – |
4 | 254 | 64 | 64 | 64 | 64 | 64 | 64 |