Table 6. Positive results by culture (n = 1068) and NAAT (n = 1179) for Leptospira spp infections; by serology (n = 1125) and NAAT (n = 1179) for rickettsial infections; and total episodes positive for Leptospira spp and rickettsial infections.
| Organism | Culture positive | NAAT positive | Episodes positive |
| Leptospira spp. | 2 (0.2%) | 17 (1.4%) | 17 |
| Serology positive | NAAT positive | ||
| Acute O. tsutsugamushi | 5 (0.4%) | 17a (1.4%) | 96 |
| Acute/recent O. tsutsugamushi | 90 (8.0%) | ||
| Acute R. typhi | 3 (0.3%) | 2b (0.2%) | 27 |
| Acute/recent R. typhi | 22 (2.0%) | ||
| Acute/recent Rickettsia of indeterminate species | 11 (1.0%) | – | 11 |
| Total rickettsial infections | 131c |
“Acute rickettsial serology” denotes a >4-fold dynamic rise in specific IgM between acute and convalescent (7-days) samples; “acute/recent serology” denotes either static IgM titres or raised IgM in a single acute sample.
a
One additional to serological testing.
b
Two additional to serological testing.
c
Three additional to serological testing.