Table 3. Rickettsia sp. CA23RL1 sequence similarity with Rickettsia rickettsii and Rickettsia 364D in study of newly recognized SFG Rickettsia as cause of severe RMSF-like illness, northern California, USA *.

Rickettsia sp. CA23RL1 target sequence	R. rickettsii sequence similarity†	Rickettsia 364 sequence similarity‡
16S rRNA	99.7%	99.6%
gltA	99.2%	99.6%
ompA	96.8%	97.3%
ompB	98.6%	98.8%
sca4	98.6%	98.6%

*RMSF, Rocky Mountain spotted fever; SFG, spotted fever group. †Rickettsia rickettsii strain Sheila Smith, GenBank accession no. CP000848.1. ‡Rickettsia 364D, GenBank accession no. CP003308.1.