Anthrax is a highly fatal zoonotic disease caused by Bacillus anthracis and remains an important livestock and public health concern in Ethiopia. However, epidemiological information from routine surveillance in North Shewa Zone is limited. This study aimed to characterize the temporal, seasonal, spatial, and species distribution of reported animal anthrax and assess disease burden and vaccination coverage in North Shewa Zone from 2020 to 2024. A retrospective descriptive study was conducted using Disease Outbreak and Vaccination Activity Report (DOVAR) data collected from January 2020 to December 2024. Data from 23 districts and 374 peasant associations were analyzed using descriptive statistics to assess outbreak occurrence, morbidity, mortality, case fatality rate (CFR), temporal and seasonal patterns, species distribution, and vaccination coverage. Cases were based on clinically suspected anthrax reported through routine surveillance. Eleven outbreaks were reported in eight districts, resulting in 89 cases and 48 deaths among 19,130 animals at risk. Overall morbidity, mortality, and CFR were 0.47%, 0.25%, and 53.9%, respectively. Outbreaks occurred in 2020, 2021, and 2024, with the highest occurrence in 2024 (54.5%). No outbreaks were reported in 2022 and 2023. Most cases (78.7%) occurred during the rainy seasons, with August recording the highest monthly occurrence (28.1%). Cattle represented the majority of cases (49.4%) and deaths (58.3%). Moretena-Jeru had the highest number of reported cases, while Menz-Lalo recorded the highest CFR. Outbreak-response vaccination achieved 81.1% coverage, whereas routine prophylactic vaccination covered only 30.15% of the target population. Animal anthrax remains a significant livestock health concern in North Shewa Zone, characterized by seasonal outbreaks and high fatality. Strengthening routine risk-based vaccination, surveillance, laboratory-supported diagnosis, timely reporting, and safe carcass disposal is recommended.
| Published in | Science Discovery Animals (Volume 1, Issue 3) |
| DOI | 10.11648/j.sdan.20260103.11 |
| Page(s) | 73-85 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2026. Published by Science Publishing Group |
Animal Anthrax, Bacillus Anthracis, Case Fatality Rate, North Shewa Zone, Retrospective Surveillance, Vaccination Coverage
| [1] | A. H. T. and M. A. Z. Muhammad Farhan Rahim1, Muhammad Zishan Ahmad2, Rana Faisal Naeem1, Mujeeb ur Rehman Sohoo3, Zia ud Din Sindhu4, “Anthrax and its Impact on Public Health,” Int. J. Agric. Biosci., vol. 4, no. Zoonosis Volume 4, pp. 502–509, 2023, |
| [2] | B. A. Wassie et al., “First PCR Confirmed anthrax outbreaks in Ethiopia—Amhara region, 2018–2019,” PLoS Negl. Trop. Dis., vol. 16, no. 2, pp. 2018–2019, 2022, |
| [3] | C. J. Carlson et al., “The global distribution of Bacillus anthracis and associated anthrax risk to humans, livestock and wildlife,” Nat. Microbiol., vol. 4, no. 8, pp. 1337–1343, 2019, |
| [4] | WOAH, “Anthrax in humans and animals Fourth edition Food and Agriculture Organization of the United Nations,” vol. 4, pp. 18–43, 2018. |
| [5] | T. T. Mersha et al., “Prioritization of neglected tropical zoonotic diseases: A one health perspective from Tigray region, Northern Ethiopia,” PLoS One, vol. 16, no. 7 July, pp. 1–16, 2021, |
| [6] | WOAH, “Anthrax (infection with Bacillus anthracis),” 2023. |
| [7] | FAO, “Anthrax outbreaks: a warning for improved prevention, control and heightened awareness,” 2016. |
| [8] | B. Sushma, S. Shedole, K. P. Suresh, G. Leena, S. S. Patil, and G. Srikantha, “An estimate of global anthrax prevalence in livestock: A meta-analysis,” Vet. World, vol. 14, no. 5, pp. 1263–1271, 2021, |
| [9] | D. Mesfin, K. Mulatu, A. Birara, T. Shibabaw, D. Birhanu, and W. Yalew, “Anthrax prevention practice and associated factors among farmers in Farta district, South Gondar, Amhara region, Northwest Ethiopia,” Heliyon, vol. 7, no. 12, pp. 2009–2013, 2021, |
| [10] | A. Assefa, A. Bihon, and A. Tibebu, “Anthrax in the Amhara regional state of Ethiopia; spatiotemporal analysis and environmental suitability modeling with an ensemble approach,” Prev. Vet. Med., vol. 184, no. May, p. 105155, 2020, |
| [11] | E. G. Pieracci et al., “Prioritizing zoonotic diseases in Ethiopia using a one health approach,” One Heal., vol. 2, pp. 131–135, 2016, |
| [12] | Y. H. Huang et al., “Environmental drivers of biseasonal anthrax outbreak dynamics in two multihost savanna systems,” Ecol. Monogr., vol. 92, no. 4, pp. 1–24, 2022, |
| [13] | A. Olani et al., “Identification of Bacillus anthracis Strains from Animal Cases in Ethiopia and Genetic Characterization by Whole-Genome Sequencing,” Pathogens, vol. 14, no. 1, 2025, |
| [14] | Z. R. Barandongo et al., “The persistence of time: the lifespan of Bacillus anthracis spores in environmental reservoirs,” Res. Microbiol., vol. 174, no. 6, 2023, |
| [15] | J. Witt et al., “Spatio-temporal analysis of anthrax in livestock at zonal level in Ethiopia, 2008-2020,” Spat. Spatiotemporal. Epidemiol., vol. 57, no. September 2025, p. 100801, 2026, |
| [16] | N. S. Nyokabi et al., “Implementing a one health approach to strengthen the management of zoonoses in Ethiopia,” One Heal., vol. 16, no. October 2022, p. 100521, 2023, |
| [17] | A. F. Seyoum, A. B. Bitew, and H. Negussie, “A Retrospective Study on the Epidemiology of Anthrax Among Livestock from 2011 to 2020 in Awi Administrative Zone, Amhara Region, Northwest Ethiopia,” Vet. Med. Res. Reports, vol. Volume 13, no. November, pp. 313–321, 2022, |
| [18] | E. Gezahegn and T. Geinoro, “Retrospective Study of Anthrax Occurrence and Vaccination Coverage in South Ethiopia Region from 2019 - 2023,” Vet. Med. Public Heal. J., vol. 7, no. 1, p. 10, 2026, |
| [19] | Y. Gebreegziabher et al., “Anthrax outbreaks: a warning for improved prevention, control and heightened awareness,” BMC Infect. Dis., vol. 4, no. 1, pp. 1–6, 2022, |
| [20] | Fufa Y, Desalegn TA, Abera N. Anthrax outbreak surveillance and response in Arba Minch, Ethiopia: After-action review. J Public Health Afr. 2025; 16(1): 1–7. |
| [21] | G. Romha and W. Girmay, “Knowledge, attitude and practice towards anthrax in northern Ethiopia: a mixed approach study,” BMC Infect. Dis., vol. 20, no. 1, pp. 1–29, 2020, |
| [22] | K. Kibebew, B. Kenaw, and L. Tibebu, “A Retrospective Study of Anthrax in Livestock, from 2022 to 2025, in Shashemene District, West Arsi, Ethiopia,” Sci. Discov. Anim., vol. 1, no. 1, pp. 1–13, 2026, |
| [23] | K. Seid, A. M. Shiferaw, N. N. Yesuf, T. Derso, and M. Sisay, “Livestock owners’ anthrax prevention practices and its associated factors in Sekota Zuria district, Northeast Ethiopia,” BMC Vet. Res., vol. 16, no. 1, pp. 1–8, 2020, |
| [24] | Z. W Michael, Z. Hailemariam, and K. Yusuf Musa, “A Retrospective Surveillance Data Analysis Study on the Epidemiology of Anthrax Cases Among Livestock from 2019 to 2023 in Halaba Zone, Central Ethiopia,” Int. J. Heal. Policy Plan., vol. 4, no. 1, pp. 01–10, 2025, |
| [25] | W. Constable, P. D., Hinchcliff, K. W., Done, S. H., &Grünberg, Veterinary medicine: A textbook of the diseases of cattle, horses, sheep, pigs and goats, (11th ed.). 2016. |
| [26] | D. Subedi et al., “Anthrax in Humans, Animals, and the Environment and the One Health Strategies for Anthrax Control,” Pathogens, vol. 13, no. 9, pp. 1–17, 2024, |
| [27] | Y. Gebreegziabher, K. Haile, and Z. Assefa, “iMedPub Journals Retrospective Record Review 2013-2017 Kinfe Haile and Zewdu Assefa Study area, population and period,” pp. 1–6, 2020, |
APA Style
Yitayew, Z. (2026). Epidemiology of Reported Animal Anthrax in North Shewa Zone, Ethiopia: Retrospective Study of Temporal, Seasonal and Spatial Patterns and Vaccination Coverage, 2020–2024. Science Discovery Animals, 1(3), 73-85. https://doi.org/10.11648/j.sdan.20260103.11
ACS Style
Yitayew, Z. Epidemiology of Reported Animal Anthrax in North Shewa Zone, Ethiopia: Retrospective Study of Temporal, Seasonal and Spatial Patterns and Vaccination Coverage, 2020–2024. Sci. Discov. Anim. 2026, 1(3), 73-85. doi: 10.11648/j.sdan.20260103.11
AMA Style
Yitayew Z. Epidemiology of Reported Animal Anthrax in North Shewa Zone, Ethiopia: Retrospective Study of Temporal, Seasonal and Spatial Patterns and Vaccination Coverage, 2020–2024. Sci Discov Anim. 2026;1(3):73-85. doi: 10.11648/j.sdan.20260103.11
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Download@article{10.11648/j.sdan.20260103.11,
author = {Zelalem Yitayew},
title = {Epidemiology of Reported Animal Anthrax in North Shewa Zone, Ethiopia: Retrospective Study of Temporal, Seasonal and Spatial Patterns and Vaccination Coverage, 2020–2024},
journal = {Science Discovery Animals},
volume = {1},
number = {3},
pages = {73-85},
doi = {10.11648/j.sdan.20260103.11},
url = {https://doi.org/10.11648/j.sdan.20260103.11},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.sdan.20260103.11},
abstract = {Anthrax is a highly fatal zoonotic disease caused by Bacillus anthracis and remains an important livestock and public health concern in Ethiopia. However, epidemiological information from routine surveillance in North Shewa Zone is limited. This study aimed to characterize the temporal, seasonal, spatial, and species distribution of reported animal anthrax and assess disease burden and vaccination coverage in North Shewa Zone from 2020 to 2024. A retrospective descriptive study was conducted using Disease Outbreak and Vaccination Activity Report (DOVAR) data collected from January 2020 to December 2024. Data from 23 districts and 374 peasant associations were analyzed using descriptive statistics to assess outbreak occurrence, morbidity, mortality, case fatality rate (CFR), temporal and seasonal patterns, species distribution, and vaccination coverage. Cases were based on clinically suspected anthrax reported through routine surveillance. Eleven outbreaks were reported in eight districts, resulting in 89 cases and 48 deaths among 19,130 animals at risk. Overall morbidity, mortality, and CFR were 0.47%, 0.25%, and 53.9%, respectively. Outbreaks occurred in 2020, 2021, and 2024, with the highest occurrence in 2024 (54.5%). No outbreaks were reported in 2022 and 2023. Most cases (78.7%) occurred during the rainy seasons, with August recording the highest monthly occurrence (28.1%). Cattle represented the majority of cases (49.4%) and deaths (58.3%). Moretena-Jeru had the highest number of reported cases, while Menz-Lalo recorded the highest CFR. Outbreak-response vaccination achieved 81.1% coverage, whereas routine prophylactic vaccination covered only 30.15% of the target population. Animal anthrax remains a significant livestock health concern in North Shewa Zone, characterized by seasonal outbreaks and high fatality. Strengthening routine risk-based vaccination, surveillance, laboratory-supported diagnosis, timely reporting, and safe carcass disposal is recommended.},
year = {2026}
}
TY - JOUR T1 - Epidemiology of Reported Animal Anthrax in North Shewa Zone, Ethiopia: Retrospective Study of Temporal, Seasonal and Spatial Patterns and Vaccination Coverage, 2020–2024 AU - Zelalem Yitayew Y1 - 2026/09/28 PY - 2026 N1 - https://doi.org/10.11648/j.sdan.20260103.11 DO - 10.11648/j.sdan.20260103.11 T2 - Science Discovery Animals JF - Science Discovery Animals JO - Science Discovery Animals SP - 73 EP - 85 PB - Science Publishing Group SN - 3142-8983 UR - https://doi.org/10.11648/j.sdan.20260103.11 AB - Anthrax is a highly fatal zoonotic disease caused by Bacillus anthracis and remains an important livestock and public health concern in Ethiopia. However, epidemiological information from routine surveillance in North Shewa Zone is limited. This study aimed to characterize the temporal, seasonal, spatial, and species distribution of reported animal anthrax and assess disease burden and vaccination coverage in North Shewa Zone from 2020 to 2024. A retrospective descriptive study was conducted using Disease Outbreak and Vaccination Activity Report (DOVAR) data collected from January 2020 to December 2024. Data from 23 districts and 374 peasant associations were analyzed using descriptive statistics to assess outbreak occurrence, morbidity, mortality, case fatality rate (CFR), temporal and seasonal patterns, species distribution, and vaccination coverage. Cases were based on clinically suspected anthrax reported through routine surveillance. Eleven outbreaks were reported in eight districts, resulting in 89 cases and 48 deaths among 19,130 animals at risk. Overall morbidity, mortality, and CFR were 0.47%, 0.25%, and 53.9%, respectively. Outbreaks occurred in 2020, 2021, and 2024, with the highest occurrence in 2024 (54.5%). No outbreaks were reported in 2022 and 2023. Most cases (78.7%) occurred during the rainy seasons, with August recording the highest monthly occurrence (28.1%). Cattle represented the majority of cases (49.4%) and deaths (58.3%). Moretena-Jeru had the highest number of reported cases, while Menz-Lalo recorded the highest CFR. Outbreak-response vaccination achieved 81.1% coverage, whereas routine prophylactic vaccination covered only 30.15% of the target population. Animal anthrax remains a significant livestock health concern in North Shewa Zone, characterized by seasonal outbreaks and high fatality. Strengthening routine risk-based vaccination, surveillance, laboratory-supported diagnosis, timely reporting, and safe carcass disposal is recommended. VL - 1 IS - 3 ER -
Livestock and Fishery Resource Department, North Shewa Zone, Debre Birhan, Ethiopia
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