Preparing liberia for rabies control: human-dog relationship and practices, and vaccination scenarios

To reach zero dog-related human rabies deaths by 2030, Liberia must prioritize rabies as a public health threat. Understanding dog demography parameters are imperative and sets the basis for planning cost-effective and sustainable mass dog vaccination programs nationwide. We conducted a cross-sectional household survey in eleven rural districts of Bong and one urban district of Montserrado County to gather baseline information on the canine population, human-mediated dog movements, people's relationships and practices towards dogs, and further information to estimate costs for a nationwide campaign. In total, 1282 respondents were interviewed (612 rural and 670 urban). About 34% of the rural and 37% of the urban households owned at least one dog. The canine: human ratios were 1:6.1 in the rural and1:5.6 in the urban area and did not differ notably among both counties. The estimated canine population for Liberia is 594,640. The majority of respondents (55%) reported poor waste disposal. Muslims were less likely to own a dog than Christians (39% vs 19% OR: 0.4 95% CI: 0.2-0.6) (p< 0.001). Six percent of respondents mentioned that a family member was exposed to a dog bite in the past year, and most victims were adult males. Four of the victims reportedly died after showing rabies compatible symptoms. Twenty-seven percent of dog-owning households in rural areas reported that at least one dog originated from urban areas, and 2% of urban households brought in dogs from another country. In addition, 43% of respondents consumed dog meat at least once. Fifty percent of the respondents claimed knowledge of rabies but only 5.7% and 1.9% mentioned rabies transmission through rabies-infected saliva and rabies-infected mucus on broken skin. Forty percent of the respondents did not know whether rabies was incurable in humans once clinical signs appear. Assuming 30 vaccinators could vaccinate 50 dogs per day for eighteen months (371 working days), the total cost for the vaccination of the national Liberian canine population is estimated at 1.6 million (USD) for one vaccination round. Our study reveals an overall poor disease knowledge and the potential for spread of rabies in the study areas. A nationwide rabies awareness is crucial to enhance rabies prevention and control through mass dog vaccination.