Figure 5

Box and whisker plots illustrating the distribution of prevalence (%) values by the identified factors obtained from the reviewed studies. The upper whisker represents the maximum value whereas the lower whisker represents the minimum value. The band at the middle of the box is the median value. The circles outside the whiskers are the ‘far out’ values. Prevalence median values progressively increase by AEZs up to zone IV then subside in zone V. Prevalence median values for open grazing system and for indigenous cattle are higher than for other production systems and cattle breeds respectively. Prevalence median values progressively increase with age.