Anthrax Outbreaks in East and Southern Africa Cause Alarm

Several countries in East and Southern Africa are grappling with anthrax outbreaks, leading to over 1,100 suspected cases and 20 deaths in 2023. The World Health Organization reports seasonal outbreaks in Kenya, Malawi, Uganda, Zambia, and Zimbabwe, with Zambia experiencing its worst outbreak since 2011 and Malawi reporting its first human case this year.

Five countries in East and Southern Africa are currently grappling with outbreaks of anthrax, a potentially fatal disease caused by spore-forming bacteria. According to the World Health Organization (WHO), over 1,100 suspected cases and 20 deaths have been reported this year in Kenya, Malawi, Uganda, Zambia, and Zimbabwe.

Outbreak Details

Out of the 1,166 suspected cases reported, only 37 have been confirmed through laboratory tests. While seasonal outbreaks occur annually in these countries, Zambia is experiencing its worst outbreak since 2011, and Malawi has reported its first human case this year. Uganda, on the other hand, has recorded 13 deaths.

Transmission and Risks

Anthrax primarily affects livestock such as cattle, sheep, and goats, as well as wild herbivores. Humans can become infected through exposure to infected animals or contaminated animal products. Although anthrax is not typically considered contagious between humans, rare cases of person-to-person transmission have been documented.

The bacteria responsible for anthrax, Bacillus anthracis, can naturally occur in soil and can form spores that are highly resistant to environmental conditions. This characteristic makes anthrax a potential bioterrorism agent, as demonstrated in the 2001 attacks in the United States, where five people died, and 17 fell ill after exposure to anthrax spores sent through the mail.

Zambia's Outbreak

Among the affected countries, Zambia's outbreak is considered the most concerning. As of November 20, 684 suspected cases and four deaths had been reported across nine out of Zambia's ten provinces. One notable incident involved 26 people who contracted the disease after consuming contaminated hippopotamus meat.

WHO has expressed concerns about the high risk of the Zambian outbreak spreading to neighboring countries. The organization attributes the outbreaks in all five countries to various factors, including climatic shocks, food insecurity, low-risk perception, and exposure to the disease through handling infected animal meat.

The anthrax outbreaks in East and Southern Africa pose a significant public health challenge. Collaborative efforts among governments, health organizations, and communities are crucial to control the spread of the disease, enhance surveillance, and implement effective prevention and control measures. Raising awareness about the risks and promoting safe practices in handling livestock and animal products can help mitigate the impact of these outbreaks and protect vulnerable populations.