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Biology subjects

Tenzin, T.

Publications and source records attributed to Tenzin, T..

2 recordsLinked to original sources

Dog Ecology and Rabies Knowledge, Attitude and Practice (KAP) in the Northern Communal Areas of Namibia

In 2021, a comprehensive dog demographic questionnaire combined with a KAP survey were conducted in the northern communal areas (NCAs) of Namibia with the aim of gaining a better understanding of dog populations, owner behaviour, and knowledge, attitudes and practices (KAP) relating to rabies. The survey of 3,726 households across the eight regions of the NCAs provided insights that will inform interventions on order to improve human rabies prevention and Namibias dog rabies control strategy. The results showed a relatively low average human/dog ratio (HDR) of 5.4:1 indicating a surprisingly high dog population of at least 272,000 dogs in the NCAs, 93% of which appear to be owned but are free-roaming. Data analysis revealed opportunities but also highlighted needs for improvements in rabies surveillance and mass dog vaccinations. Although knowledge, attitude, and practice scores towards epidemiologic and clinical aspects, human rabies prevention, and canine rabies vaccination were deemed to be acceptable, the survey nevertheless revealed deficiencies in some of the population. Interestingly, data seemed to indicate a certain number of unreported human rabies cases. Other findings included the very high number of dogs. However, only 50% of dog-owning households reported having vaccinated their dogs. In order to address these issues, the planning, announcement, and implementation of mass dog vaccination campaigns need to be adapted to achieve adequate vaccination coverage. Another focus needs to be on rabies awareness and education if Namibia is to be significantly contributing to the global goal of "Zero by 30". Author SummaryAs a neglected disease, rabies remains a major One Health problem in Africa and Asia. Here we report the results of an extensive community survey on dog ownership and knowledge, attitudes and practices (KAP) related to rabies control and prevention, covering the Northern Communal Areas of Namibia. Our results showed that the dog population is large with a human/dog ratio (HDR) of 5.4:1, of which the vast majority is free-roaming thus supporting disease transmission but complicating control efforts. The majority of people across this part of Namibia were aware of rabies and had acceptable levels of attitudes and practices. While dog bite incidences per 100,000 people were high, ranging between 262 and 1,369, more than 90% of bite victims reported having visited a hospital after a bite incident. Still, gaps in dog rabies surveillance exist and incomplete or missing post exposure prophylaxes caused human casualties and call for ongoing interventions aimed at increasing knowledge and awareness.

microbiology↗

Dog population estimates and rabies vaccination optimization using the High Resolution Settlement Layer (HRSL) - a proof of principle for the Oshana region, Namibia

Despite being vaccine preventable, dog-mediated rabies continues unabated in low-resourced countries in Africa and Asia. For interventions into dog rabies control, an estimate of the dog population is a prerequisite. Here we used a High-Resolution Settlement Layer (HRSL) with an unprecedented resolution of 30m grid length that is Open Source for dog populations estimates and studies on vaccination coverages, with the Oshana region of Namibia as an example. Our analyses show that the average dog density per km2 is 8.15 but ranges between 0 and 40 per constituency, with individual densities being as high as 551. Spatial analyses for different settings of static vaccination points indicate that the previously used vaccination points during the pilot phase and cattle crush-pens are insufficient for reaching a 70% vaccination level in the Oshana region. Based on cost calculations, between US$5.29 and US$7.77 are needed to parenterally vaccinate dogs in this region, suggesting that oral rabies vaccination may be a cost-effective supplement or even replacement. The high-resolution spatial analyses are exemplified for rabies, but any other One Health intervention, particularly for Neglected tropical diseases in highly heterogenous and remote areas could use our approach as a template. Author SummaryHere, we used high-resolution geospatial data for demonstrating and validating its utility to assist veterinary authorities in their fight against dog-mediated rabies on the example of the Oshana region in Namibia. With such detailed data it is possible estimate the dog population and to analyse and optimize vaccination strategies in dog rabies endemic areas. Such analyses are exemplified for rabies, but any other One Health intervention, particularly for Neglected tropical diseases in highly heterogenous and remote areas could use our approach as a template.

microbiology↗