Onchocerciasis News and Research

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Onchocerciasis is a parasitic disease caused by the filarial worm Onchocerca volvulus. It is transmitted through the bites of infected blackflies of Simulium species, which carry immature larval forms of the parasite from human to human. In the human body, the larvae form nodules in the subcutaneous tissue, where they mature to adult worms. After mating, the female adult worm can release up to 1000 microfilariae a day. These move through the body, and when they die they cause a variety of conditions, including blindness, skin rashes, lesions, intense itching and skin depigmentation. Onchocerciasis is endemic in more than 25 nations located in a broad band across the central part of Africa. Small endemic foci are also present in the Arabian Peninsula (Yemen) and in the Americas (Brazil, Colombia, Ecuador, Guatemala, southern Mexico, and Venezuela).

HKI's Shawn Baker honored for groundbreaking research on malnutrition

At two recent conferences on innovative malnutrition research organized by the Copenhagen Consensus Center, Helen Keller International's programs to reduce malnutrition were awarded first prize by government officials, NGOs, researchers and private sector representatives.

25 Nov 2009

OEPA reports substantial reduction of river blindness in six endemic countries

A regional initiative launched in the 1990s to eliminate onchocerciasis (river blindness) in the Americas has substantially reduced the prevalence of the disease in recent years, as evidenced by a 31% decrease in the number of individuals requiring mass drug administration in six endemic countries. Results were reported today at the 58th annual meeting of the American Society of Tropical Medicine and Hygiene (ASTMH).

23 Nov 2009

Clinton Global Initiative to raise awareness and funding for NTD control and elimination

At the Clinton Global Initiative today, the Inter-American Development Bank joined with the Global Network for Neglected Tropical Diseases to announce their commitment to mobilize $30 million from the public and private sectors to raise awareness and funding for NTD control and elimination in the Americas, supported by technical assistance from the Pan American Health Organization, regional office of the World Health Organization for the Americas.

24 Sep 2009

Also in global health news: HIV/AIDS in Bangladesh; river blindness in Tanzania; potential immune system booster; compounds might fight TB

BDNews24.com reports on a new $13 million U.S.-government initiative aimed at "providing HIV-prevention services to two million at-risk people in Bangladesh including injecting drug users, male, female and transgender sex workers and their clients, and HIV-positive people through a network of 50 health centres." USAID will partner with Family Health International (FHI) to implement the program (9/17).

18 Sep 2009

1.4 million Nigerians over the age of 40 will become blind by 2020: Study

By 2020, 1.4 million Nigerians over age 40 will lose their sight, and the vast majority of the causes are either preventable or treatable, according to the Nigeria National Blindness and Visual Impairment Study Group.

9 Sep 2009

Onchocerciasis elimination feasible with ivermectin treatment

The first evidence that onchocerciasis elimination is feasible with ivermectin treatment was published in the open-access journal PLoS Neglected Tropical Diseases. Onchocerciasis is also called river blindness because the blackfly which transmits the disease breeds in rivers; it often blinds people, as well as causing debilitating skin disease. Over 37 million people are infected, often living in poor, rural African communities.

21 Jul 2009

Moxidectin being tested for onchocerciasis

A clinical trial is being launched in three African countries of a drug that could eliminate onchocerciasis, or river blindness, one of the leading infectious causes of blindness across Africa. The drug, moxidectin, is being investigated for its potential to kill or sterilize the adult worms of Onchocerca volvulus, which cause onchocerciasis.

1 Jul 2009

BBC examines river blindness program in sub-Saharan Africa

BBC examines a campaign in sub-Saharan Africa that is helping to distribute drugs to prevent onchocerciasis, also known as river blindness - a disease "caused by a parasite that is spread from human to human by the black fly, which once flourished along river beds where there is fast-flowing water."

21 Jun 2009

Global Health Council names Jeffrey Sturchio as next leader

Jeffrey L. Sturchio, a longtime leader at Merck & Co. whose quiet diplomacy helped build programs treating more than 100,000 AIDS patients in Botswana as well as protecting millions of Africans from river blindness, has been named President and CEO of the Global Health Council, the Council's board of directors announced today.

26 May 2009

Global health organizations are doing too little to support health system strengthening

Existing health systems in the developing world are fragile and many are unable to provide effective health services - and so there is growing consensus that the success of global health initiatives will depend on "health system strengthening" (a recent buzzword in global health).

30 Apr 2009

River blindness under control in Escuintla, Guatemala

An international team of researchers led by Rodrigo Gonzalez of the Universidad del Valle de Guatemala reports that the transmission of onchocerciasis or river blindness has been broken in Escuintla, Guatemala, one of the largest endemic areas in the Western Hemisphere to date to stop the transmission of the parasitic disease.

30 Mar 2009

Waging war on tropical diseases may be key to U.S. foreign policy

Stating that neglected tropical diseases (NTDs) not only promote poverty but also destabilize communities, former Health and Human Services Secretary Tommy Thompson and Sabin Vaccine Institute President Peter Hotez call upon the public-health and foreign-policy communities to embrace medical diplomacy and NTD control as a means to combat terrorism in an article published January 27 in the open-access journal PLoS Neglected Tropical Diseases.

27 Jan 2009

More attention to neglected tropical diseases

An opportunity to contribute to a major initiative to alleviate poverty in the world's poorest populations.

28 May 2008

Onchocerciasis parasite shows signs of resistance

Onchocerciasis is an infection caused by Onchocerca volvulus, a parasite nematode worm transmitted to humans by a species of black fly of the Simulium genus whose larvae develop in fast-flowing rivers.

31 Jan 2008

Neglected tropical diseases, lymphatic filariasis, trachoma, leishmaniasis, onchocerciasis and schistosomiasis

Though little known to most Americans, lymphatic filariasis, trachoma, leishmaniasis, onchocerciasis, schistosomiasis and other so-called neglected tropical diseases are responsible for severe health burdens, especially among the world's poorest people.

28 Dec 2007

Scientists solve genetic code of parasitic worm that causes elephantiasis

More than 150 million people worldwide are infected with filarial parasites -- long, thread-like worms that can live for years inside the human body and cause severe, debilitating diseases such as elephantiasis.

21 Sep 2007

Ivermectin is causing genetic selection in river blindness parasite

Ivermectin, the standard drug for treating river blindness (onchocerciasis), is causing genetic changes in the parasite that causes the disease, according to a new study by Roger Prichard (McGill University, Canada) and colleagues, published on August 30, 2007 in the open-access journal PLoS Neglected Tropical Diseases.

30 Aug 2007