Table 2:
The relationship of rabies-positivity results with animal attack rate and provocation status in 180 rabies-suspicious animals brought to the Central Veterinary Laboratory, Yemen, June to December 2011
| Attack rate | Total animals involved in attacks | Rabies-positive animals | Rabies-negative animals | PPR | CI | P value | |||
|---|---|---|---|---|---|---|---|---|---|
| n | % | n | % | n | % | ||||
| 1 individual | 130 | 72.2 | 71 | 54.6 | 59 | 45.4 | 02 | 0.07–0.49 | 0.0001 |
| 2–3 individuals | 44 | 24.5 | 37 | 84.0 | 7 | 16.0 | 4.1 | 1.59–10.7 | 0.001 |
| 5–9 individuals | 6 | 3.3 | 6 | 100.0 | 0 | 0.0 | undefined | 0.14 | |
| Provocation | |||||||||
| Provoked | 40 | 22.2 | 25 | 62.5 | 15 | 37.5 | 0.96 | 0.44–2.1 | 0.9 |
| Unprovoked | 140 | 77.8 | 89 | 63.6 | 51 | 36.4 | 1.05 | 0.48–2.3 | 0.9 |
PPR = prevalence proportion ratio; CI = 95% confidence interval; PPR >1 = at risk; significant result = P <0.05.