Estimating Dog Population in Bali for Rabies Control

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Background

 

Rabies remains a critical public health threat in Bali, Indonesia, exacerbated by a significant rise in cases. By mid-2022, 158 villages in Bali reported rabies cases, leading to increased bite incidents and 11 fatalities by early September 2022. Despite efforts in vaccination, research, surveillance, education, and sterilization, the elimination of rabies remains challenging due to the substantial free-roaming dog population and the diversion of resources to COVID-19.

In response, the Indonesian Public Health Association Bali Branch (IAKMI Bali), the Asia Pacific Cities Alliance for Health and Development (APCAT), the Bali Provincial Health Office, and the Provincial Agriculture Department have partnered on a comprehensive rabies control program. Supported by the World Organisation for Animal Health (WOAH) and funded by the Australian Government, this initiative aims to enhance awareness and commitment among local governments and stakeholders towards rabies control and prevention. Understanding the population structure of both owned and free-roaming dogs is crucial for enhancing rabies prevention and control efforts.

 

Objectives

  1. Estimate the population size and characteristics of owned dogs, including the proportion that are free-roaming.
  2. Estimate the population size and structure of free-roaming (FR) dogs.
  3. Estimate the total dog population size, including dog density across different agro-ecological settings.

 

 

Methodology

  1. Owned Dog Population: *Use data from the APCAT KAP survey
    • Multiply the mean number of dogs by the total number of households to estimate the owned dog population.
  1. Free-Roaming Dog Population:
    • Count dogs in a random sample of streets.
    • Extrapolate the average number of dogs per kilometer to the total street length to estimate the total number of free-roaming dogs.
    • Perform mark-resight surveys to account for detection probability and correct the population estimate.
  1. Unowned Dog Population:
    • Subtract the number of free-roaming owned dogs from the total free-roaming dog estimate.
  1. Population Characteristics:
    • Collect data on the demographics, health status, and vaccination status of dogs through surveys.