South Africa Faces Malaria Surge After Heavy Rains and Flooding, Gauteng Deaths Rise in 2026

South Africa is experiencing a significant surge in malaria cases linked to heavy rainfall and flooding across several provinces, with public health officials reporting increased transmission and fatalities since the beginning of 2026.

The National Institute for Communicable Diseases (NICD) has confirmed a rise in malaria infections following unusually heavy rains and flooding, particularly in the endemic provinces of Limpopo, Mpumalanga and KwaZulu-Natal. In Mpumalanga alone, more than 300 cases were reported in January 2026, reflecting the heightened risk posed by stagnant water creating breeding grounds for malaria-carrying mosquitoes.

Gauteng, while not a malaria-endemic province, has seen a notable increase in cases, most of which are imported from high-risk areas. The NICD stated that the majority of malaria cases recorded in Gauteng originated from Limpopo, Mpumalanga and KwaZulu-Natal, where local transmission is ongoing due to favorable mosquito breeding conditions after the floods.

Between January and March 2026, Gauteng recorded 414 malaria cases and 11 deaths, according to provincial health data cited by SABC News. Health officials attributed the rise in both cases and fatalities to the increased importation of infections from neighboring endemic regions, compounded by delays in seeking treatment and heightened mosquito activity in areas affected by flooding.

Public health response and ongoing risks

Health authorities have urged residents, particularly in Johannesburg and surrounding areas, to remain vigilant for malaria symptoms such as fever, chills, headache and fatigue. Time Out Worldwide reported that public health campaigns are emphasizing early diagnosis and prompt treatment, especially for individuals who have recently traveled to or returned from malaria-risk zones in Limpopo, Mpumalanga or KwaZulu-Natal.

The NICD and provincial health departments continue to monitor the situation closely, reinforcing messaging around preventive measures including the use of mosquito nets, repellents and indoor residual spraying where appropriate. However, officials have noted that shrinking budgets and rising flood-related challenges are complicating vector control efforts in some regions.

While the current surge is primarily driven by environmental factors increasing mosquito breeding and population movement from endemic areas, health experts stress that malaria remains preventable and treatable when detected early. No evidence of local transmission establishing in Gauteng has been confirmed, with all cases in the province still classified as imported.

As of April 2026, the malaria situation in South Africa remains under active surveillance, with health authorities advising anyone experiencing fever after travel to risk areas to seek immediate medical evaluation and disclose their travel history to healthcare providers.