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The results of passive hemagglutination assay for 136 genotypes of O. tsutsugamushi
| PHA results | Genotypes | |||
|---|---|---|---|---|
| Boryong | Taguchi | Kanda/Kawasaki | Jecheon | |
| PHA-positive | 75* | 7 | 2 | 0 |
| Single titer ≥ 1:80 | 44 | 3 | 1 | 0 |
| Follow-up titer rise ≥ four times | 31 | 4 | 1 | 0 |
| PHA-negative | 20 | 22 | 9 | 1 |
| Negative single titer | 11 | 9 | 2 | 0 |
| Negative follow-up titer rise | 9 | 13 | 7 | 1 |
| Total | 95 | 29 | 11 | 1 |
P value < 0.001 for Boryong strain vs. Kawasaki strains (Taguchi + Kanda/Kawasaki).
PHA = passive hemagglutination assay.
