Table 2.
East coast fever prevalence, incidence and case-fatality rates from studies conducted in intensive/semi-intensive smallholder dairy systems in Kenya
| Region | District /area | Prevalence (cattle ages sampled) | Annual incidence rates | Case-fatality rates | Epidemiological factors | References |
|---|---|---|---|---|---|---|
| Central highlands |
Kiambu |
41%-55% |
|
|
Age |
[23] |
| |
Murang’a |
18%a, 72%b (6–18 months) |
54%c 74%d 86%e, 110%f |
6%c, 5%d 9%e, 16%f |
AEZ suitability for tick vector, age, breed, grazing system |
[11,12] |
| Coastal lowlands |
Kaloleni/ Kilifi |
57%g, 79%h (adult) |
|
|
Age, AEZ, grazing system |
[24] |
| |
Kaloleni/ Kilifi |
18%g 48%h (<18 months) |
6.0%g - 50.4%g, 10.8%h - 87.6%h |
13%g, 31%h |
Age, AEZ, grazing system |
[25] |
| |
Kwale |
|
23%* |
11%* |
Age, grazing system |
[26] |
| Central Rift Valley | Nakuru | 22%j, 33%k | Grazing system | [27] |
a: higher elevation AEZ; b: lower elevation AEZ; c: zero grazing/higher AEZ elevation stratum; d: zero grazing stratum/lower AEZ elevation stratum; e: free grazing/higher AEZ elevation stratum; f: free grazing/ lower AEZ elevation stratum; g: zero grazing; h: free grazing; j: semi-zero grazing; k: free grazing; *parasitological data.