
Nested polymerase chain reaction (PCR) was applied to identify the serotypes of Rickettsia tsutsugamushi isolated from patients. The primers used for PCR were based on the nucleotide sequences encoding a 56 kDa antigen of rickettsiae. Comparing to the conventional immunofluorescence assay (IFA), which displays a considerable degree of cross-reactivity among different species, the result obtained suggests that the polymerase chain reaction method is much more reliable than IFA.
Orientia tsutsugamushi, Guinea Pigs, Animals, Fluorescent Antibody Technique, Humans, Serotyping, Polymerase Chain Reaction
Orientia tsutsugamushi, Guinea Pigs, Animals, Fluorescent Antibody Technique, Humans, Serotyping, Polymerase Chain Reaction
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