Volume 15, Number 8—August 2009
Letter
Tick-Borne Rickettsiosis in Traveler Returning from Honduras
Table
Rickettsia spp. serologic titers for a man who returned from Honduras, 2005*
Test | Titers on specific date |
||||
---|---|---|---|---|---|
May 26 | Jun 10 | Jul 14 | Aug 25 | Nov 22 | |
RMSF IgG† | Positive, >1,024 | Positive, >1,024 | Positive, >1,024 | Positive, >1,024 | |
RMSF IgM† | Positive, 512 | Positive, 256 | Positive, 128 | Positive, 256 | |
R. conorii IgG† | >1,024 | 512 | 512 | ||
R. conorii IgM† | 64 | 64 | 64 | ||
R. africae IgG‡ | 2,048 | 4,096 | |||
R. africae IgM‡ | 512 | ||||
R. conorii IgG‡ | 2,048 | 4,096 | |||
R. conorii IgM‡ | 512 | ||||
R. rickettsii IgG‡ | 1,024 | ||||
R. rickettsii IgM‡ | 256 |
*Reference titer for negative/normal result is <64. RMSF, Rocky Mountain spotted fever; Ig, immunoglobulin.
†Testing done by Focus Diagnostics, Cypress, CA, USA.
‡Testing done by Centers for Disease Control and Prevention, Atlanta, GA, USA.
Page created: September 30, 2010
Page updated: September 30, 2010
Page reviewed: September 30, 2010
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