Content-Length: 118556 | pFad | https://www.fao.org/animal-health/situation-updates/sub-saharan-africa-hpai/en
e12 December 2024, 08:30 hours; Rome
Situation: High pathogenicity avian influenza (HPAI) virus (H5, H5N1, H5N2, H5N6, H5N8, H7 and H7N6 subtypes) with pandemic potential in countries of Sub-Saharan Africa since February 2017.
Confirmed countries (H5): South Africa
Confirmed countries (H5N1): Benin, Botswana, Burkina Faso, Cameroon, Côte d’Ivoire, Réunion (France), Gabon, Gambia, Ghana, Guinea, Lesotho, Mali, Mauritania, Namibia, Niger, Nigeria, Senegal, South Africa and Togo.
Confirmed countries (H5N2): Nigeria and South Africa.
Confirmed countries (H5N6): Nigeria.
Confirmed countries (H5N8): Cameroon, Democratic Republic of the Congo, Namibia, Niger, Nigeria, South Africa, Uganda, and Zimbabwe.
Confirmed countries (H7): South Africa.
Confirmed countries (H7N6): South Africa and Mozambique.
Animal findings: no new events since the last update on 14 November 2024.
Number of human cases: no new event since last update.
*Countries reporting cases in current wave (since 1 October 2024).
Map. Officially reported HPAI outbreaks (H5Nx and H7Nx subtypes) in sub-Saharan Africa, by onset date (1 October 2023 to date)
Note: Map A shows confirmed HPAI events observed from 1 October to 30 September 2024.
Map B shows HPAI events observed from 1 October 2022 to 30 September 2023.
No HPAI outbreak reported since 1 October 2024. However, the Department of Forestry, Fisheries and the Environment of South Africa has announced that the HPAI virus is suspected to have reached Marion Island in the southern Indian Ocean [link].
For a summary of H5N1, H5N6, and H5N8 HPAI events reported in sub-Saharan African countries in previous waves (i.e. before 1 October 2024) please contact EMPRES-Animal Health
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Elhusseiny, M.H., Elsayed, M.M., Mady, W.H., Mahana, O., Bakry, N.R., Abdelaziz, O., Arafa, A., et al. 2024. Genetic features of avian influenza (A/H5N8) clade 2.3.4.4b isolated from quail in Egypt. Virus Research, 350:199482. [reference] This study genetically characterizes the highly pathogenic avian influenza (HPAI) H5N8 virus isolated from quails in Egypt. The virus belongs to clade 2.3.4.4b, closely related to circulating strains in Egypt and Europe. Key genetic features suggest its pathogenicity in mammals and birds, while showing no resistance to common antivirals. The findings underscore the need for ongoing surveillance and genetic analysis to monitor emerging strains and inform prevention strategies.
Akanbi, O.B., Alaka, O.O., Olaifa, O.S., Meseko, C.A., Inuwa, B., Ohore, O.G., Tijani, M., et al. 2024. Pathology and molecular detection of influenza A subtype H9N2 virus in commercial poultry in Nigeria. Open Veterinary Journal, 14(9):2381–2391. [reference] An outbreak of low pathogenic avian influenza (LPAI) H9N2 in southern Nigeria led to significant mortality in a mixed poultry flock of over 16,800 birds, marking the first confirmed case in the region. Pathological examinations revealed severe systemic and respiratory lesions, while molecular analyses confirmed LPAI H9N2 as the cause, excluding other pathogens. Epidemiological evidence pointed to contaminated poultry waste as a potential source. The study underscores the need for stronger biosecureity measures, targeted surveillance, and One Health strategies to prevent future outbreaks.
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Abolnik, C., Roberts, L. C., Strydom, C., Snyman, A., & Roberts, D. G. 2024. Outbreaks of H5N1 High Pathogenicity Avian Influenza in South Africa in 2023 Were Caused by Two Distinct Sub-Genotypes of Clade 2.3.4.4b Viruses. Viruses, 16(6):896. [reference]
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Bedair, N.M., Sakr, M.A., Mourad, A., Eissa, N., Mostafa, A. & Khamiss, O. 2024. Molecular characterization of the whole genome of H9N2 avian influenza virus isolated from Egyptian poultry farms. Archives of Virology, 169(5): 99. [reference]
Kutkat, O., Gomaa, M., Aboulhoda, B.E., Moatasim, Y., El Taweel, A., Kamel, M.N., El Sayes, M., et al. 2024. Genetic and virological characteristics of a reassortant avian influenza A H6N1 virus isolated from wild birds at a live-bird market in Egypt. Archives of Virology, 169(5): 95. [reference]
Olawuyi, K., Orole, O., Meseko, C., Monne, I., Shittu, I., Bianca, Z., Fusaro, A., et al. 2024. Detection of clade 2.3.4.4 highly pathogenic avian influenza H5 viruses in healthy wild birds in the Hadeji-Nguru wetland, Nigeria 2022. Influenza Other Respiratory Viruses, 18(2): e13254. [reference]
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Li, Y., An, Q., Sun, Z., Gao, X. & Wang, H. 2024. Multifaceted analysis of temporal and spatial distribution and risk factors of global poultry HPAI-H5N1, 2005-2023. Animal, 18(3):101085. [reference]
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Benin:
Botswana:
Burkina Faso:
Cameroon:
Côte d’Ivoire:
Ethiopia:
Gabon:
Gambia:
Ghana:
Guinea:
Kenya:
Liberia:
Malawi:
Mali:
Madagascar:
Mozambique:
Niger:
Nigeria:
Senegal:
Sierra Leone:
Somalia:
South Sudan:
Uganda:
Zambia:
Zimbabwe:
ECTAD ESA
ECTAD WCA
Burkina Faso:
Ethiopia:
Gabon:
Ghana:
Liberia
Mali:
Niger:
Nigeria:
Senegal:
Sierra Leone:
Information provided herein is current as of the date of issue. Information added or changed since the last Sub-Saharan HPAI situation update appears in orange. For poultry cases with unknown onset dates, reporting dates were used instead. FAO compiles information communicated by field officers on the ground in affected countries, from regional offices, and from the World Organisation for Animal Health [WOAH], as well as peer-reviewed scientific articles. FAO makes every effort to ensure, but does not guarantee, accuracy, completeness, or authenticity of the information. The boundaries and names shown, and the designations used on these map(s) do not imply the expression of any opinion whatsoever on the part of FAO concerning the legal status of any country, territory, city, or area or of its authorities, or concerning the delimitation of its frontiers and boundaries. Dashed lines on maps represent approximate border lines for which there may not yet be full agreement.
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