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FROM THE FIELD

The fight against Chagas: Time to focus on patients
09 Jul 2009 12:14:00 GMT
Source: Medecins Sans Frontieres (MSF) - International
MSF International

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In the coming months, MSF will campaign for greater awareness and commitment to the fight against Chagas. For more information on Chagas disease and the enormous gap between the number of Chagas sufferers and those who receive treatment, go to: Chagas: Break the Silence. Visitors can participate in the MSF campaign and break the silence by sending information about this silent disease to their friends.

MSF has been working in projects fighting Chagas disease since 1999. Currently, the organisation is working in three districts on the outskirts of Cochabamba, in Bolivia, the country registering the highest Chagas prevalence worldwide. Activities are carried out in collaboration with the Bolivian Ministry of Health and integrated to five primary healthcare centres, where children and adults up to 50 years of age are diagnosed and treated.

Using the same approach, the organization is currently setting up a new project in the rural zone of Cochabamba region, where it is working to involve the communities in all aspects of the strategy (prevention, diagnosis and treatment), in an area where the vector is much more prevalent.

At the end of 2008, MSF had tested over 60,000 people for Chagas, treating 3,100 patients, of whom 2,800 successfully completed their treatment. This shows that, even though the current means are not ideal, diagnosing and treating Chagas in limited resource settings and remote areas is feasible.

Madrid - This year, 100 years since the discovery Chagas disease, the medical humanitarian organisation Médecins Sans Frontières (MSF) is launching the campaign, "Chagas: it's time to break the silence."

MSF calls on endemic countries to end neglect of Chagas sufferers and support diagnosis and treatment for affected people, rather than focusing solely on vector control. MSF also calls for further Research and Development (R&D) efforts into new drugs, rapid diagnosis tests to use in remote settings and better cure tests for one of the world's most neglected diseases.

Every year Chagas kills 14,000 people and it is estimated that 10-15 million people are infected. The disease is endemic in several Latin American countries, but worldwide migration means that more and more cases are being reported in the USA, Europe, Australia and Japan. Chagas is a potential killer, but so far governments have focused on prevention and vector control rather than treatment of patients. Integrating Chagas care into primary healthcare facilities would improve patient access to treatment.

Chagas disease is caused by the Trypanosoma cruzi parasite. In most Latin American countries, the disease is transmitted by the "kissing bug" vector, although transmission is also possible from mother to child, as well as through blood transfusions, organ transplants and contaminated food. Chagas patients may be asymptomatic for years but, during the chronic phase of the disease, one third develop serious health problems (mainly heart and intestinal complications) that can lead to death.

"One of the main problems we have is that for years patients have no symptoms so they do not know they are sick and receive no treatment," explained Dr. Nines Lima, MSF Chagas officer. "Active case detection is essential to find and treat infected people."

The sooner the disease is detected, the more effective the treatment. The only two existing drugs - benznidazol and nifurtimox - were developed over 35 years ago through research not specifically focusing on Chagas. Although these medicines are very effective in newborn and breastfeeding children, only about 60 to 70 percent of adolescents and adults are successfully treated.

The older the patients are, the greater the likelihood they will experience side effects from the drugs.

"Doctors do not treat children, let alone adults, for fear of side effects," said Dr. Tom Ellman, MSF Head of Mission in Bolivia "We are showing that these effects are manageable in both cases. Leaving patients untreated is no longer ethical."

However there is still an urgent need for better drugs for treatment of Chagas. The disease is mainly poverty related, and therefore Chagas has been absent from political agendas and R&D for years. A recent study by G-Finder revealed that, in 2007, only US$10.1 million dollars were spent on R&D for Chagas.

Research and Development must be boosted in order to develop new rapid diagnosis tests, better medicines and new cure tests to address this disease more effectively.

"The lack of commercial incentives has pushed Chagas into oblivion," said Gemma Ortiz, head of the MSF Chagas campaign. "New ways to boost R&D and better tools to care for patients need to be found."


[ Any views expressed in this article are those of the writer and not of Reuters. ]


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[ Any views expressed in this article are those of the writer and not of Reuters. ]

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