Field evaluation of two bait delivery systems for the oral immunization of dogs against rabies in Tunisia
| Autor: | Khaled El Hicheri, Michel Aubert, Salah Hammami, Aida Tlatli, Jemaa Jemli, F. X. Meslin, C.L. Schumacher, Lassaad Marabet, Habib Kharmachi, Beat Neuenschwander, Hans C. Matter |
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| Rok vydání: | 1998 |
| Předmět: |
Veterinary medicine
Tunisia Rabies Population Administration Oral macromolecular substances Dogs parasitic diseases Animals Humans Medicine Dog Diseases education Transect education.field_of_study General Veterinary General Immunology and Microbiology business.industry Public Health Environmental and Occupational Health food and beverages Serum samples medicine.disease Oral immunization Infectious Diseases Rabies Vaccines Rabies virus Molecular Medicine Delivery system business human activities geographic locations |
| Zdroj: | Vaccine. 16:657-665 |
| ISSN: | 0264-410X |
| DOI: | 10.1016/s0264-410x(97)00259-4 |
| Popis: | Two bait delivery systems for the oral immunization of dogs against rabies were tested in small scale field trials in a semi-rural area in Tunisia: bait delivery to owned dogs during door to door visits of households (door to door baiting) and distribution of baits on transect lines (transect line baiting). A prototype bait (DBL2) configured for industrial production and containing either sulfadimethoxine (SDM) as a systemic marker or Rhodamine B as a topical marker was used. The overall proportion of dogs which took a bait and presented topical marker staining after door to door baiting was 59.1%. The total time and costs spent per bait accepting dog averaged 34 person minutes and US$4, respectively. Unconsummated baits were readily recovered. No unprotected human contacts with baits were recorded. Door to door baiting is a very specific but time-consuming method that enables a safe administration of vaccine baits to owned dogs. For transect line baiting, baits were distributed at a density of ca 3000 baits per km2 along double transect lines. Baits were recovered after 20 h. According to the proportion of SDM positive serum samples, 24.1% of owned dogs in the baiting area had consumed baits. Of all owned and ownerless dogs, presumably free-roaming during transect line baiting, >40% had consumed baits. The total time and costs spent per bait accepting dog averaged 48 person minutes and ca US$20, respectively. The household census revealed 32 direct human contacts with the bait matrix which corresponds to 1.4% of inhabitants. Placing baits on transect lines gives the possibility to vaccinate dogs not accessible by vaccination systems which base on dog owner participation. However, the method is not specific, less safe than other systems, not easily accepted by the human population, and costly. |
| Databáze: | OpenAIRE |
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