Table 1.
Prevalence and intensity of Hepatocystis infection in six primate hosts from Kibale National Park, Uganda.
| Prevalence (%)a | Intensity (%)b | ||||
|---|---|---|---|---|---|
| Host | nc | Microscopy | PCR | Mean | Median |
| Black-and-white colobus (Colobus guereza) | 9 | 22.2 (5.3 – 55.7) | 22.2 (5.3 – 55.7) | 0.090 (0.083 – 0.090) | 0.090 (undefined) |
| Blue guenon (Cercopithecus mitis) | 1 | 0 (0.0 – 83.3) | 0 (0.0 –83.3) | -- | -- |
| Grey-cheeked mangabey (Lophocebus albigena) | 5 | 0 (0.0 – 48.9) | 0 (0.0 – 48.9) | -- | -- |
| Olive baboon (Papio anubis) | 23 | 91.3 (72.0 –98.8) | 95.7 (77.3 – 99.9) | 0.052 (0.030 – 0.088) | 0.025 (95.7%:0.010 – 0.032) |
| Red colobus (Procolobus rufomitratus) | 46 | 89.1 (76.5 – 95.7) | 88.5 (76.7 – 95.0) | 0.058 (0.043 – 0.100) | 0.038 (95.6%:0.028 –0.064) |
| Red-tailed guenon (Cercopithecus ascanius) | 12 | 66.7 (38.8 – 86.5) | 75.0 (46.2 – 91.7) | 0.069 (0.035 – 0.121) | 0.045 (96.1%:0.013 – 0.158) |
| All | 102 | 75.0 (65.4 – 82.6) | 77.5 (68.4 – 84.5) | 0.058 (0.045 – 0.078) | 0.032 (95.6%:0.024 – 0.041) |
Numbers in parentheses are 95% confidence limits calculated using the modified Wald method (Agresti and Coull, 1998).
Intensity was measured as the percentage of infected red blood cells in positive animals, based on microscopic examination. Numbers in parentheses are bootstrap 95% confidence limits (mean) and “exact” confidence intervals (median), with the precise level of confidence around each median indicated (the confidence interval for black-and-white colobus was undefined because only two individuals were infected).
Numbers indicate sample sizes of thin smears examined microscopically and blood DNA extracts used for PCR. Thin smears from six red colobus were not readable and were thus excluded.