Just this week the Ministry of Health and several other partners in the Onchocerciasis Elimination Program for the Americas (OEPA) have declared onchocerciasis transmission has been halted in Ecuador. As per World Health Organization policy, Ecuador must now monitor and verify elimination for the next three years. In 2008, the Pan American Health Organization restated its dedication to eliminating river blindness in the Americas by 2012 and this announcement is an important step towards achieving that goal.
Onchocerciasis is transmitted by the bite of the black fly and a small, bite-transmitted worm parasite. This parasite, Onchocerca volvulus, causes skin irritation and can cause loss of sight. The illness is known as river blindness because the black flies breed in fast-moving bodies of water near affected communities. In order to break the disease transmission cycle, implementing organizations utilize the common practice of mass drug administration (MDA). In MDA programs, safe and affordable (often donated) drugs are distributed to entire communities several times a year. For onchocerciasis treatments, the Merck produced drug Mecitzan (ivermectan) is used at no cost. In the last twenty years over eight million doses have been distributed across the region in endemic communities.
OEPA is a regional collaboration that was started in 1993 by The Carter Center to treat the more than 500,000 people at risk for this disease across Latin America. The partnership includes the Pan American Health Organization (World Health Organization), the pharmaceutical company Merck, the Pan American Health and Education Foundation (PAHEF), Lions Clubs International Foundation, and the Bill and Melinda Gates Foundation. The OEPA program targets the six Latin American countries (Brazil, Ecuador, Guatemala, Mexico and Venezuela) where onchocerciasis is still a public health threat. Originally there were seven countries on this list, but Colombia achieved transmission interruption in 2008. In light of this week’s announcement, this list will be shortened to only five countries.
With a growing interest in the potential for elimination of onchocerciasis from Africa, the success of the programs in the Americas provides an experience base that can guide the next phase of the onchocerciasis program in Africa.
See Also:
http://www.pahef.org/press/2010_river_blindness.html
http://www.aolnews.com/health/article/ecuador-halts-spread-of-river-blindness/19378514
http://www.cartercenter.org/news/pr/ecuador-030110.html
