Household survey on owned dog population and rabies knowledge in selected municipalities in Bulacan, Philippines: A cross-sectional study

PLoS Negl Trop Dis. 2022 Jan 18;16(1):e0009948. doi: 10.1371/journal.pntd.0009948. eCollection 2022 Jan.

Abstract

Background: Despite the effort to eradicate rabies in the Philippines, human rabies cases have not decreased in the past decade. Rabid dogs pose the most significant hazard in the countries with the highest burden of rabies, and 70% rabies vaccine coverage is recommended for dogs in high-risk areas. Ascertaining the owned dog population and community knowledge on rabies can help improve vaccine coverage and information campaigns.

Methodology/principal findings: We conducted a cross-sectional survey in six randomly selected communities (five urban, one rural) in Central Luzon, Philippines. We first conducted the complete mapping of 9,173 households and then randomly selected 727 households. More than half (54.1%) of the households owned dogs (1.21 dogs/household). In the 727 households, we identified 878 owned dogs and 3256 humans. According to these results, the dog-to-human ratio was approximately 1:3.7. Only 8.8% of households reported a history of dog bite in 2019. Among dog-owning households, 31% reported that they allow their dogs to roam freely. Of the recorded dogs, 35.9% have never been vaccinated, and only 3.5% were spayed or castrated. Factors associated with lower rabies knowledge include (1) no education aOR: 0.30 (0.16-0.59), and (2) only primary school education aOR: 0.33 (0.22-0.49). In contrast, factors associated with higher knowledge include (1) owning a dog and not allowing them to roam freely aOR: 2.01 (1.41-2.87) and (2) owning a dog and allowing them to roam freely aOR: 1.84 (1.17-2.92), when compared to those with no dogs.

Conclusions/significance: We identified a larger dog population in the community than the usual estimates (1:10), suggesting that annual vaccine needs in the Philippines must be reassessed. Our survey shows a relatively good understanding of rabies; however, awareness of the concept of rabies as a disease, and how animals and humans can acquire it, is lacking.

MeSH terms

  • Animals
  • Cat Diseases / epidemiology
  • Cat Diseases / prevention & control
  • Cat Diseases / virology
  • Cats
  • Cross-Sectional Studies
  • Disease Susceptibility
  • Dog Diseases / epidemiology
  • Dog Diseases / prevention & control*
  • Dog Diseases / virology
  • Dogs
  • Family Characteristics*
  • Health Knowledge, Attitudes, Practice
  • Humans
  • Ownership
  • Philippines / epidemiology
  • Rabies / epidemiology
  • Rabies / prevention & control
  • Rabies / veterinary*
  • Rabies Vaccines / immunology*

Substances

  • Rabies Vaccines

Grants and funding

This work was supported by a JICA/AMED SATREPS (Science and Technology Research Partnership for Sustainable Development)(https://www.jst.go.jp/global/english/index.html) for “The establishment of the one health prevention and treatment network model for the elimination of rabies in the Philippines” (No.17823721) to AN. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.