Skip to main content

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
   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
  1. Abbreviations: IFA, indirect immunofluorescence assay–, nonreactive at titer ≥ 64