Latex-Rickettsia rickettsii test reactivity in seropositive patients.

Journal of Clinical Microbiology
K E Hechemy, B B Rubin

Abstract

In correlating results obtained from a new latex-Rickettsia rickettsii test with results obtained from a reference microimmunofluorescence test for Rocky Mountain spotted fever, we found that for seropositive patients each microimmunofluorescence titer (up to 4,096) was usually double the median titer obtained from the latex-R. rickettsii test. The pattern of immunoserological response indicated that latex-R. rickettsii is reactive with sera containing either anti-R. rickettsii immunoglobulin M (IgM) or IgG or both. The agglutination efficiency of the new test was greater when the anti-rickettsial IgM/IgG ratio was greater than or equal to 1. Sera from late-convalescent patients were generally minimally reactive or nonreactive in the latex-R. rickettsii test unless anti-R. rickettsii IgM was present.

References

Jan 1, 1977·American Journal of Epidemiology·R N PhilipS Vick
Jun 1, 1967·Bacteriological Reviews·R M Pike
Jan 1, 1981·Journal of Clinical Microbiology·K E HechemyS J Sasowski
Aug 1, 1980·Journal of Clinical Microbiology·K E HechemyE E Michaelson

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Citations

Oct 1, 1983·Journal of Clinical Microbiology·K E HechemyL B Elliott
Sep 1, 1989·Journal of Clinical Microbiology·D Raoult, G A Dasch

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