Niger becomes first african country to eliminate river blindness
The World Health Organization (WHO) has officially recognized Niger as the first country in Africa to eliminate Onchocerca volvulus, the parasite responsible for river blindness. This milestone makes Niger the fifth nation globally—and the first in Africa—to achieve verified interruption of transmission for this debilitating disease.
Dr. Tedros Adhanom Ghebreyesus, WHO Director-General, emphasized the significance of this achievement: «Eradicating a disease is a monumental feat that demands relentless dedication.» He praised Niger for its commitment to freeing its population from this stigmatizing, poverty-inducing condition that inflicts immense suffering. This success underscores the remarkable progress in combating neglected tropical diseases, offering hope to nations still battling river blindness.»
River blindness, medically known as onchocerciasis, ranks as the second leading infectious cause of blindness worldwide, surpassed only by trachoma. Spread by the bite of an infected blackfly—commonly found near fast-flowing rivers—the disease primarily affects rural communities in Sub-Saharan Africa and Yemen, though smaller endemic zones exist in Latin America.
country-led strategies and global partnerships drive success
Niger’s victory over river blindness stems from a combination of targeted interventions and collaborative efforts. Between 1976 and 1989, the country participated in the WHO’s Onchocerciasis Control Programme (OCP) in West Africa, deploying vector control measures—including insecticide spraying—to dramatically reduce transmission rates.
Following generous ivermectin donations from Merck & Co., Inc. (known as MSD outside the U.S. and Canada), Niger launched mass drug administration (MDA) campaigns from 2008 to 2019 in areas still affected by lymphatic filariasis. Since ivermectin is effective against both diseases—and many targeted regions overlapped with onchocerciasis-endemic zones—this campaign inadvertently accelerated the elimination of Onchocerca volvulus transmission.
By 2014, Niger initiated preliminary assessments to confirm transmission interruption after most lymphatic filariasis MDA activities concluded. Entomological and epidemiological surveys later confirmed that the combined impact of vector control and mass drug administration had driven onchocerciasis prevalence from nearly 60% down to just 0.02%.
This triumph was made possible through a robust partnership involving the Nigerien government, WHO, and multiple non-governmental organizations. These collaborations facilitated resource mobilization, technical support, and continuous monitoring, enabling rapid adjustments to strategies and ensuring sustained intervention effectiveness.
Dr. Matshidiso Moeti, WHO Regional Director for Africa, reflected on the broader implications: «River blindness has inflicted incalculable human suffering while stifling economic growth in affected communities by forcing populations away from vital river resources.» She added, «Niger’s achievement not only liberates its people from this burden but also sets a powerful example for other African nations striving to eliminate neglected tropical diseases. The country has already demonstrated leadership by eliminating Guinea worm disease in 2013—a historic milestone in itself.»
global progress and regional milestones
Globally, 54 countries have successfully eliminated at least one neglected tropical disease (NTD). To date, Niger joins four other nations—Colombia, Ecuador, Guatemala, and Mexico—all in the Americas, where WHO has certified elimination of river blindness.
Within the WHO African Region, 21 countries have eliminated at least one NTD. For Niger, this is the second such triumph: in 2013, the country was certified free of Guinea worm disease transmission.
