Equatorial Guinea Expands Malaria Elimination Plan to Mainland

Equatorial Guinea is embarking on an ambitious nationwide plan to eliminate malaria, extending a strategy that has significantly reduced infections and deaths on Bioko Island. The initiative relies on two decades of meticulous data collection, sustained funding, and community engagement through door-to-door campaigns.

The island of Bioko, approximately half the size of Rhode Island, has demonstrated the effectiveness of this approach, employing indoor spraying, mosquito nets, and larval control. The success hinges on detailed data mapping of homes and populations, a crucial element given Equatorial Guinea's lack of a formal address system. This data enables targeted interventions and real-time tracking of their effectiveness.

This door-to-door strategy involves workers explaining the importance of interventions and ensuring houses are sprayed. Cristina Ngui Otogo, the program coordinator, highlighted the effort required to gain residents' trust, noting that convincing people to participate, especially during adverse weather, can be challenging.

Malaria remains a significant global health burden, with approximately 610,000 deaths in 2024, predominantly in African countries, which account for 95% of global cases and deaths. Despite advancements like new vaccines, progress in eliminating malaria across Africa by the 2030 goal has stalled. Only Mauritius and Cabo Verde, both island nations, have been certified malaria-free by the World Health Organization.

The Bioko Island program received substantial funding, over $130 million in the last two decades, from oil giants operating in the country, including ConocoPhillips and Chevron Oil, alongside the government. This funding was critical for the island's success.

Earlier this year, a new $116 million investment from the government and businesses was announced to support the expansion to the mainland and Annobon Island. This commitment arose partly from oil companies recognizing the impact of malaria on employee productivity. Equatorial Guinea, despite its oil wealth and high per-capita income, faces significant poverty and corruption, with over half its population living in deprived conditions.

Health Minister Mitoha Ondo’o Ayekaba, who experienced severe malaria as a child, noted the dramatic reduction on Bioko Island, where malaria prevalence has dropped from around 50% to 7%, and deaths among children under five have decreased by 78%. The minister sees malaria elimination as vital for tourism and economic growth.

The nationwide strategy will integrate the proven methods from Bioko with the R21 vaccine for children. Plans include vaccinating 300,000 children and employing advanced surveillance techniques, such as drones to identify mosquito hotspots. Authorities are also exploring the potential of genetically modified mosquitoes to reduce disease transmission.

However, experts caution that replicating Bioko's success on the mainland presents considerable challenges. Bioko's island status naturally reduces the risk of external transmission, a distinct advantage over the mainland, which shares porous borders with malaria-prevalent countries like Cameroon and Gabon. The sheer size difference, with the mainland being 13 times larger than Bioko, further complicates eradication efforts. Dr. Matthew M. Ippolito, a malaria specialist, emphasized that current intervention packages may not be sufficient for elimination in continental sub-Saharan Africa, stressing the need for precise timing of interventions, cross-border coordination, and broader improvements in living conditions, housing, and healthcare.