Volume 19, Number 4—April 2013
Dispatch
Response to a Rabies Epidemic, Bali, Indonesia, 2008–2011
Table
Indicators of rabies incidence and spread among the human, dog, and other animal populations before and during mass island-wide dog vaccination campaigns, Bali, Indonesia, 2008–2011*
Indicator | Before campaign, Nov 8–Sep 10, 2008 | During 1st campaign, Oct 10, 2010–Apr 11, 2011 | During 2nd campaign, May 11–Dec 11, 2011 |
---|---|---|---|
Observation period, mo | 22 | 7 | 8 |
Average no. rabid dogs/mo | 45 | 11 | 6 |
Average apparent monthly attack rate among dogs, %† | 0.03 | 0.01 | 0.01 |
Total no. villages with cases detected among dogs | 221 | 269 | 282 |
No. villages with newly detected cases | NA | 48 | 13 |
Rate of spread, no. villages with newly detected dog cases/mo | 10 | 6.8 | 1.6 |
Remaining known villages with cases among dogs, no. (%) | 140 (19.4) | 48 (6.6) | 30 (4.1) |
No. dog bites treated/mo (bites/day) | 6,256 (208) | 4,589 (153) | 4,197 (140) |
Human deaths | 94 | 34 | 9 |
Estimated no. culled dogs | 107,900 | 40,500 | 14,000 |
No. dogs vaccinated (estimated coverage, %) | >73,000 (40)‡ | 249,429 (>70) | 231,155 (>70) |
*Rabid dogs correspond to cases confirmed by using the direct fluorescent antibody test. Villages were classified as free from rabies if no cases were detected for at >6 mo. Coverages were initially estimated from human: dog ratios and subsequently from observations of the proportion of dogs with collars indicating vaccination. The number of culled dogs was also estimated because some culling was carried out by communities rather than by government. NA, not applicable.
†Attack rate, confirmed rabid dogs divided by estimated unvaccinated dog population.
‡§Data were not available for dogs vaccinated and boosted during the first few months of the outbreak; therefore, only data on vaccinations in Gianyar and Bangli Regencies are shown.