Case-control study of human anthrax outbreak investigation in farta woreda, South Gondar, Northwest Ethiopia

Author:

Wondmnew Taddie,Asrade Biset

Abstract

Abstract Background Anthrax is a zoonotic disease caused by the Bacillus anthracis bacteria, which is one of the top five important livestock diseases and the second top priority zoonotic disease, next to rabies, in Ethiopia, which remains a major problem for animals and public health in Ethiopia. This study was conducted to verify the existence of the outbreak, determine risk factors, and implement measures to control the anthrax outbreak in Farta woreda, South Gondar zone, Northwest Ethiopia in 2019. Methods A community-based case-control study was conducted from March 25 to April 1, 2019. A structured questionnaire was used to collect data and for review of documents and discussion with livestock and health office staff. The collected data were analyzed by SPSS and presented in tables and graphs. Results A total of 20 human anthrax cases with an attack rate of 2.5 per 1000 population were reported from the affected kebele. The age of the cases ranged from 1 month to 65 years (median age = 37.5 years). Of the total cases, 66.7% were male and 77.8% were 15 and older. The probability of developing anthrax among people who had unvaccinated animals was higher than in those who didn’t have unvaccinated animals with an AOR = 8.113 (95% CI 1.685–39.056) and the probability of getting anthrax in relation to people’s awareness of anthrax was AOR = 0.114 (95% CI 0.025–0.524). Conclusion An anthrax outbreak occurred in Wawa Mengera Kebele of Farta woreda. The presence of unvaccinated animals in a household was found to be a risk factor for anthrax cases. Timely animal vaccination and strengthening health education on the vaccination of animals, mode of transmission, and disposal of dead animals are essential for preventing anthrax cases.

Publisher

Springer Science and Business Media LLC

Subject

Infectious Diseases

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