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Dive into the research topics where John H Amuasi is active.

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Featured researches published by John H Amuasi.


The Lancet | 2012

Effect of the Affordable Medicines Facility--malaria (AMFm) on the availability, price, and market share of quality-assured artemisinin-based combination therapies in seven countries: a before-and-after analysis of outlet survey data.

Sarah Tougher; Yazoume Ye; John H Amuasi; Idrissa A Kourgueni; Rebecca Thomson; Catherine Goodman; Andrea Mann; Ruilin Ren; Barbara Willey; Catherine A Adegoke; Abdinasir A Amin; Daniel Ansong; Katia Bruxvoort; Diadier Diallo; Graciela Diap; Charles Festo; Boniface Johanes; Elizabeth Juma; Admirabilis Kalolella; Oumarou Malam; Blessing Mberu; Salif Ndiaye; Samuel Blay Nguah; Moctar Seydou; Mark Taylor; Sergio Torres Rueda; Marilyn Wamukoya; Fred Arnold; Kara Hanson

BACKGROUND Malaria is one of the greatest causes of mortality worldwide. Use of the most effective treatments for malaria remains inadequate for those in need, and there is concern over the emergence of resistance to these treatments. In 2010, the Global Fund launched the Affordable Medicines Facility--malaria (AMFm), a series of national-scale pilot programmes designed to increase the access and use of quality-assured artemisinin based combination therapies (QAACTs) and reduce that of artemisinin monotherapies for treatment of malaria. AMFm involves manufacturer price negotiations, subsidies on the manufacturer price of each treatment purchased, and supporting interventions such as communications campaigns. We present findings on the effect of AMFm on QAACT price, availability, and market share, 6-15 months after the delivery of subsidised ACTs in Ghana, Kenya, Madagascar, Niger, Nigeria, Uganda, and Tanzania (including Zanzibar). METHODS We did nationally representative baseline and endpoint surveys of public and private sector outlets that stock antimalarial treatments. QAACTs were identified on the basis of the Global Funds quality assurance policy. Changes in availability, price, and market share were assessed against specified success benchmarks for 1 year of AMFm implementation. Key informant interviews and document reviews recorded contextual factors and the implementation process. FINDINGS In all pilots except Niger and Madagascar, there were large increases in QAACT availability (25·8-51·9 percentage points), and market share (15·9-40·3 percentage points), driven mainly by changes in the private for-profit sector. Large falls in median price for QAACTs per adult equivalent dose were seen in the private for-profit sector in six pilots, ranging from US


Malaria Journal | 2010

Exploring the relationship between chronic undernutrition and asymptomatic malaria in Ghanaian children.

Benjamin T. Crookston; Stephen C. Alder; Isaac Boakye; Ray M. Merrill; John H Amuasi; Christina A. Porucznik; Joseph B. Stanford; Ty Dickerson; Kirk A. Dearden; Devon C. Hale; Justice Sylverken; Bryce S Snow; Alex Osei-Akoto; Daniel Ansong

1·28 to


Malaria Journal | 2010

Anti-malarial market and policy surveys in sub-Saharan Africa

Graciela Diap; John H Amuasi; Isaac Boakye; Ann-Marie Sevcsik; Bernard Pécoul

4·82. The market share of oral artemisinin monotherapies decreased in Nigeria and Zanzibar, the two pilots where it was more than 5% at baseline. INTERPRETATION Subsidies combined with supporting interventions can be effective in rapidly improving availability, price, and market share of QAACTs, particularly in the private for-profit sector. Decisions about the future of AMFm should also consider the effect on use in vulnerable populations, access to malaria diagnostics, and cost-effectiveness. FUNDING The Global Fund to Fight AIDS, Tuberculosis and Malaria, and the Bill & Melinda Gates Foundation.


Tropical Medicine & International Health | 2015

Availability and price of malaria rapid diagnostic tests in the public and private health sectors in 2011: results from 10 nationally representative cross-sectional retail surveys

Stephen Poyer; Tanya Shewchuk; Sarah Tougher; Yazoume Ye; Andrea Mann; Barbara Willey; Rebecca Thomson; John H Amuasi; Ruilin Ren; Marilyn Wamukoya; Mark Taylor; Samuel Blay Nguah; Blessing Mberu; Admirabilis Kalolella; Elizabeth Juma; Charles Festo; Boniface Johanes; Graciela Diap; Katia Bruxvoort; Daniel Ansong; Kara Hanson; Fred Arnold; Catherine Goodman

BackgroundA moderate association has been found between asymptomatic parasitaemia and undernutrition. However, additional investigation using the gold standard for asymptomatic parasitaemia confirmation, polymerase chain reaction (PCR), is needed to validate this association. Anthropometric measurements and blood samples from children less than five years of age in a rural Ghanaian community were used to determine if an association exists between chronic undernutrition and PCR-confirmed cases of asymptomatic malaria.MethodsThis was a descriptive cross-sectional study of 214 children less than five years of age from a community near Kumasi, Ghana. Blood samples and anthropometric measurements from these children were collected during physical examinations conducted in January 2007 by partners of the Barekuma Collaborative Community Development Programme.ResultsFindings from the logistic model predicting the odds of asymptomatic malaria indicate that children who experienced mild, moderate or severe stunting were not more likely to have asymptomatic malaria than children who were not stunted. Children experiencing anaemia had an increased likelihood (OR = 4.15; 95% CI: 1.92, 8.98) of asymptomatic malaria. Similarly, increased spleen size, which was measured by ultrasound, was also associated with asymptomatic malaria (OR = 2.17; 95% CI: 1.44, 3.28). Fast breathing, sex of the child, and age of the child were not significantly associated with the asymptomatic malaria.ConclusionsNo significant association between chronic undernutrition and presence of asymptomatic malaria was found. Children who experience anaemia and children who have splenomegaly are more likely to present asymptomatic malaria. Programmes aimed at addressing malaria should continue to include nutritional components, especially components that address anaemia.


Journal of Empirical Research on Human Research Ethics | 2009

EVALUATING INTERNATIONAL COLLABORATION: DIFFERENTIAL PERCEPTIONS OF PARTNERSHIP IN A CBPR PROJECT IN GHANA

Peter de Schweinitz; Daniel Ansong; Stephen Manortey; John H Amuasi; Isaac Boakye; Benjamin T. Crookston; Stephen C. Alder

At a recent meeting (Sept 18, 2009) in which reasons for the limited access to artemisinin-based combination therapy (ACT) in sub-Saharan Africa were discussed, policy and market surveys on anti-malarial drug availability and accessibility in Burundi and Sierra Leone were presented in a highly interactive brainstorming session among key stakeholders across private, public, and not-for-profit sectors. The surveys, the conduct of which directly involved the national malaria control programme managers of the two countries, provides the groundwork for evidence-based policy implementation. The results of the surveys could be extrapolated to other countries with similar socio-demographic and malaria profiles. The meeting resulted in recommendations on key actions to be taken at the global, national, and community level for better ACT accessibility.At theglobal level, both public and private sectors have actions to take to strengthen policies that lead to the replacement of loose blister packs with fixed-dose ACT products, develop strategies to ban inappropriate anti-malarials and regulate those bans, and facilitate technology and knowledge transfer to scale up production of fixed-dose ACT products, which should be readily available and affordable to those patients who are in the greatest need of these medicines.At thenational level, policies that regulate the anti-malarial medicines market should be enacted and enforced. The public sector, including funding donors, should participate in ensuring that the private sector is engaged in the ACT implementation process. Research similar to the surveys discussed is important for other countries to develop and evaluate the right incentives at a local level.At the community level, community outreach and education about appropriate preventive and treatment measures must continue and be strengthened, with service delivery systems developed within both public and private sectors, among other measures, to decrease access to ineffective and inappropriate anti-malarial medicines.What was clear during the meeting is that continuing commitment, strengthened interaction and transparency among various stakeholders, with focus on communities, national governments, and evidence-based policy and action are the only way to sustainably address the control of malaria, a disease which continues to have a significant health and socio-economic impact worldwide, particularly in sub-Saharan Africa.Details on the methodology employed in carrying out the studies discussed at this meeting, as well as more detailed results, data analysis and discussion of the studies are soon to be published.


PLOS ONE | 2012

Access to Artemisinin-Combination Therapy (ACT) and other Anti-Malarials: National Policy and Markets in Sierra Leone

John H Amuasi; Graciela Diap; Samuel Blay Nguah; Patrick Karikari; Isaac Boakye; Amara Jambai; Wani Kumba Lahai; Karly S. Louie; Jean-René Kiechel

To describe the state of the public and private malaria diagnostics market shortly after WHO updated its guidelines for testing all suspected malaria cases prior to treatment.


International Journal of Emergency Medicine | 2012

Non-fatal injuries among pediatric patients seeking care in an urban Ghanaian emergency department

Lauren K. Whiteside; Rockefeller Oteng; Patrick M. Carter; John H Amuasi; Ekua Abban; Sarah Rominski; Michelle Nypaver; Rebecca M. Cunningham

Practitioners of community-based participatory research (CBPR) must overcome numerous barriers in order to include research participants as equal partners in decision-making. The decision-making processes of stakeholders (including research participants) of one international CBPR project based in the middle belt of Ghana were analyzed through qualitative focus group and interview data, as well as direct observation of formal meetings. Using modified grounded theory to interpret our data, we find that despite the intentions of extracommunity stakeholders, ordinary community members do not experience full ownership of the governance of the research enterprise. We conclude that organizational philosophy, cultural expectations, and environmental context can help to explain differential perceptions of stakeholders and function as barriers to full partnership.


Malaria Journal | 2012

The affordable medicines facility - malaria in Ghana: baseline and endline survey findings

John H Amuasi; Samuel Blay Nguah; Daniel Ansong; Graciela Diap

Malaria remains the leading burden of disease in post-conflict Sierra Leone. To overcome the challenge of anti-malarial drug resistance and improve effective treatment, Sierra Leone adopted artemisinin-combination therapy artesunate-amodiaquine (AS+AQ) as first-line treatment for uncomplicated P. falciparum malaria. Other national policy anti-malarials include artemether-lumefantrine (AL) as an alternative to AS+AQ, quinine and artemether for treatment of complicated malaria; and sulphadoxine-pyrimethamine (SP) for intermittent preventive treatment (IPTp). This study was conducted to evaluate access to national policy recommended anti-malarials. A cross-sectional survey of 127 medicine outlets (public, private and NGO) was conducted in urban and rural areas. The availability on the day of the survey, median prices, and affordability policy and available non-policy anti-malarials were calculated. Anti-malarials were stocked in 79% of all outlets surveyed. AS+AQ was widely available in public medicine outlets; AL was only available in the private and NGO sectors. Quinine was available in nearly two-thirds of public and NGO outlets and over one-third of private outlets. SP was widely available in all outlets. Non-policy anti-malarials were predominantly available in the private outlets. AS+AQ in the public sector was widely offered for free. Among the anti-malarials sold at a cost, the same median price of a course of AS+AQ (US


Ethnicity & Disease | 2012

Prevalence of hypertension and diabetes mellitus in adults from a rural community in Ghana

Mariana Cook-Huynh; Daniel Ansong; Rachel C. Steckelberg; Isaac Boakye; Katherine Seligman; Lambert Tetteh Appiah; Neha Kumar; John H Amuasi

1.56), quinine tablets (US


Malaria Journal | 2014

Communicating the AMFm message: exploring the effect of communication and training interventions on private for-profit provider awareness and knowledge related to a multi-country anti-malarial subsidy intervention

Barbara Willey; Sarah Tougher; Yazoume Ye; Andrea Mann; Rebecca Thomson; Idrissa A Kourgueni; John H Amuasi; Ruilin Ren; Marilyn Wamukoya; Sergio Torres Rueda; Mark Taylor; Moctar Seydou; Samuel Blay Nguah; Salif Ndiaye; Blessing Mberu; Oumarou Malam; Admirabilis Kalolella; Elizabeth Juma; Boniface Johanes; Charles Festo; Graciela Diap; Didier Diallo; Katia Bruxvoort; Daniel Ansong; Abdinasir A Amin; Catherine A Adegoke; Kara Hanson; Fred Arnold; Catherine Goodman

0.63), were found in both the public and private sectors. Quinine injection had a median cost of US

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Daniel Ansong

Kwame Nkrumah University of Science and Technology

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Isaac Boakye

Komfo Anokye Teaching Hospital

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Samuel Blay Nguah

Komfo Anokye Teaching Hospital

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