Table 2.
Outbreaks of suspected cholera cases reported at the third administrative level in rural and urban settings.
| Rural | Urban | |
|---|---|---|
| Metrics based on suspected cholera cases | ||
| Number of outbreaks | 188 | 57 |
| Outbreak threshold, weekly incidence per 100,000 population (IQR) | 1.5a (0.5-11.4) |
3.0a (1-28.2) |
| Median outbreak size (IQR) | 100 (43-215) |
96 (40-469) |
| Median epidemic durations, weeks (IQR) | 12a (8-15) |
14a (10-17) |
| Median time to epidemic peak, weeks (IQR) | 3 (3-5) |
4 (3-6) |
| Median proportion of suspected cases reported during the peak week (%) (IQR) | 31.4a (22.2-39.2) |
22.7a (16.7-30) |
| Median weekly incidence during the peak week per 1000 people (IQR) | 0.4a (0.1-1.4) |
0.8a (0.3-3) |
| Median early outbreak reproductive number (range) | 1.9 (1.02-3) |
2.0 (1.3-3.2) |
| Median attack rate per 1000 people (IQR) | 1.5a (0.6-5.7) |
2.9a (1.9-10.9) |
| Metrics based on cholera-associated deathsb | ||
| Number of outbreaks with reports of deaths | 138 | 55 |
| Median case fatality risk (%)(IQR) | 0 (0-1) |
0 (0-0.2) |
This table presents the comparisons of epidemic metrics between rural and urban settings for outbreaks at third-level administrative units.
a
P <0.05 Wilcoxon rank sum test was used to test if the medians of outbreak characteristics are the same between rural and urban settings.
b
N.B. Outbreaks with reports of deaths may not have documented this information systematically, so these results are highly sensitive to reporting biases.
IQR= interquartile range.