Christian Lengeler

Socio-cultural factors explaining timely and appropriate use of health facilities for degedegein south-eastern Tanzania (2009)

Dillip, Angel, Hetzel, Manuel W, Gosoniu, Dominic, Kessy, Flora, Lengeler, Christian, Mayumana, Iddy, ...

Abstract Background Convulsions is one of the key signs of severe malaria among children under five years of age, potentially leading to serious complications or death. Several studies of...

Malaria – a major health problem within an oil palm plantation around Popondetta, Papua New Guinea (2009)

Pluess, Bianca, Mueller, Ivo, Levi, Damien, King, Graham, Smith, Thomas A, Lengeler, Christian

Abstract Background For companies operating in malaria endemic countries, malaria represents a substantial risk to workers and their dependants, and can lead to significantly reduced worker...

Costs and cost-effectiveness of vector control in Eritrea using insecticide-treated bed nets (2009)

Yukich, Joshua O, Zerom, Mehari, Ghebremeskel, Tewolde, Tediosi, Fabrizio, Lengeler, Christian

Abstract Background While insecticide-treated nets (ITNs) are a recognized effective method for preventing malaria, there has been an extensive debate in recent years about the best large-scale...

Time To Move from Presumptive Malaria Treatment to Laboratory-Confirmed Diagnosis and Treatment in African Children with Fever (2009)

Valérie D'Acremont, Christian Lengeler, Hassan Mshinda, Deo Mtasiwa, Marcel Tanner, Blaise Genton

Background to the debate: Current guidelines recommend that all fever episodes in African children be treated presumptively with antimalarial drugs. But declining malarial transmission in parts of...

Costs and consequences of large-scale vector control for malaria (2008)

Yukich, Joshua O, Lengeler, Christian, Tediosi, Fabrizio, Brown, Nick, Mulligan, Jo-Ann, Chavasse, Des, ...

Abstract Background Five large insecticide-treated net (ITN) programmes and two indoor residual spraying (IRS) programmes were compared using a standardized costing methodology. Methods Costs were...

Low utilization of health care services following screening for hypertension in Dar es Salaam (Tanzania): a prospective population-based study (2008)

Bovet, Pascal, Gervasoni, Jean-Pierre, Mkamba, Mashombo, Balampama, Marianna, Lengeler, Christian, Paccaud, Fred

Abstract Background Drug therapy in high-risk individuals has been advocated as an important strategy to reduce cardiovascular disease in low income countries. We determined, in a low-income urban...

Spatial effects of mosquito bednets on child mortality (2008)

Gosoniu, Laura, Vounatsou, Penelope, Tami, Adriana, Nathan, Rose, Grundmann, Hajo, Lengeler, Christian

Abstract Background Insecticide treated nets (ITN) have been proven to be an effective tool in reducing the burden of malaria. Few randomized clinical trials examined the spatial effect of ITNs on...

Obstacles to prompt and effective malaria treatment lead to low community-coverage in two rural districts of Tanzania (2008)

Hetzel, Manuel W, Obrist, Brigit, Lengeler, Christian, Msechu, June J, Nathan, Rose, Dillip, Angel, ...

Abstract Background Malaria is still a leading child killer in sub-Saharan Africa. Yet, access to prompt and effective malaria treatment, a mainstay of any malaria control strategy, is sub-optimal in...

Malaria treatment in the retail sector: Knowledge and practices of drug sellers in rural Tanzania (2008)

Hetzel, Manuel W, Dillip, Angel, Lengeler, Christian, Obrist, Brigit, Msechu, June J, Makemba, Ahmed M, ...

Abstract Background Throughout Africa, the private retail sector has been recognised as an important source of antimalarial treatment, complementing formal health services. However, the quality of...

Malaria risk and access to prevention and treatment in the paddies of the Kilombero Valley, Tanzania (2008)

Hetzel, Manuel W, Alba, Sandra, Fankhauser, Mariette, Mayumana, Iddy, Lengeler, Christian, Obrist, Brigit, ...

Abstract Background The Kilombero Valley is a highly malaria-endemic agricultural area in south-eastern Tanzania. Seasonal flooding of the valley is favourable to malaria transmission. During the...

Preventing Childhood Malaria in Africa by Protecting Adults from Mosquitoes with Insecticide-Treated Nets (2007)

Gerry F. Killeen, Tom A. Smith, Heather M. Ferguson, Hassan Mshinda, Salim Abdulla, Christian Lengeler, ...

BackgroundMalaria prevention in Africa merits particular attention as the world strives toward a better life for the poorest. Insecticide-treated nets (ITNs) represent a practical means to prevent...

Understanding and improving access to prompt and effective malaria treatment and care in rural Tanzania: the ACCESS Programme (2007)

Hetzel, Manuel W, Iteba, Nelly, Makemba, Ahmed, Mshana, Christopher, Lengeler, Christian, Obrist, Brigit, ...

Abstract Background Prompt access to effective treatment is central in the fight against malaria. However, a variety of interlinked factors at household and health system level influence access to...

Decreased availability of antimalarials in the private sector following the policy change from chloroquine to sulphadoxine-pyrimethamine in the Kilombero Valley, Tanzania (2006)

Hetzel, Manuel W, Msechu, June J, Goodman, Catherine, Lengeler, Christian, Obrist, Brigit, Kachur, S Patrick, ...

Abstract Background Malaria control strategies emphasize the need for prompt and effective treatment of malaria episodes. To increase treatment efficacy, Tanzania changed its first-line treatment...

Quantifying behavioural interactions between humans and mosquitoes: Evaluating the protective efficacy of insecticidal nets against malaria transmission in rural Tanzania (2006)

Killeen, Gerry F, Kihonda, Japhet, Lyimo, Edith, Oketch, Fred R, Kotas, Maya E, Mathenge, Evan, ...

Abstract Background African malaria vectors bite predominantly indoors at night so sleeping under an Insecticide-Treated Net (ITN) can greatly reduce malaria risk. Behavioural adaptation by...

Rapid Urban Malaria Appraisal (RUMA) IV: Epidemiology of urban malaria in Cotonou (Benin) (2006)

Wang, Shr-Jie, Lengeler, Christian, Smith, Thomas A, Vounatsou, Penelope, Akogbeto, Martin, Tanner, Marcel

Abstract Background An estimated 40 % of the population in Benin lives in urban areas. The purpose of the study was to estimate malaria endemicity and the fraction of malaria-attributable fevers in...

Rapid Urban Malaria Appraisal (RUMA) III: epidemiology of urban malaria in the municipality of Yopougon (Abidjan) (2006)

Wang, Shr-Jie, Lengeler, Christian, Smith, Thomas A, Vounatsou, Penelope, Cissé, Guéladio, Tanner, Marcel

Abstract Background Currently, there is a significant lack of knowledge concerning urban malaria patterns in general and in Abidjan in particular. The prevalence of malaria, its distribution in the...

Rapid Urban Malaria Appraisal (RUMA) II: Epidemiology of urban malaria in Dar es Salaam (Tanzania) (2006)

Wang, Shr-Jie, Lengeler, Christian, Mtasiwa, Deodatus, Mshana, Thomas, Manane, Lusinge, Maro, Godson, ...

Abstract Background The thinking behind malaria research and control strategies stems largely from experience gained in rural areas and needs to be adapted to the urban environment. Methods A rapid...

Use and misuse of a discount voucher scheme as a subsidy for insecticide-treated nets for malaria control in southern Tanzania (2006)

Tami, Adriana, Mbati, Juliet, Nathan, Rose, Mponda, Haji, Lengeler, Christian, Armstrong Schellenberg, Joanna RM

Since 1997, discount vouchers for insecticide-treated nets (ITNs) have been used in two rural districts of southern Tanzania as a way to target subsidies to children under 5 years and pregnant women....

Rapid urban malaria appraisal (RUMA) I: Epidemiology of urban malaria in Ouagadougou (2005)

Wang, Shr-Jie, Lengeler, Christian, Smith, Thomas A, Vounatsou, Penelope, Diadie, Diallo A, Pritroipa, Xavier, ...

Abstract Background Rapid urbanization in sub-Saharan Africa has a major impact on malaria epidemiology. While much is known about malaria in rural areas in Burkina Faso, the urban situation is less...

Rapid urban malaria appraisal (RUMA) in sub-Saharan Africa (2005)

Wang, Shr-Jie, Lengeler, Christian, Smith, Thomas A, Vounatsou, Penelope, Cissé, Guéladio, Diallo, Diadie A, ...

Abstract Background The rapid urban malaria appraisal (RUMA) methodology aims to provide a cost-effective tool to conduct rapid assessments of the malaria situation in urban sub-Saharan Africa and to...

Creating an "enabling environment" for taking insecticide treated nets to national scale: the Tanzanian experience (2005)

Magesa, Stephen M, Lengeler, Christian, DeSavigny, Don, Miller, Jane E, Njau, Ritha JA, Kramer, Karen, ...

Abstract Introduction Malaria is the largest cause of health services attendance, hospital admissions and child deaths in Tanzania. At the Abuja Summit in April 2000 Tanzania committed itself to...

Malaria and urbanization in sub-Saharan Africa (2005)

Donnelly, Martin J, McCall, PJ, Lengeler, Christian, Bates, Imelda, D'Alessandro, Umberto, Barnish, Guy, ...

Abstract There are already 40 cities in Africa with over 1 million inhabitants and the United Nations Environmental Programme estimates that by 2025 over 800 million people will live in urban areas....

Habitat characterization and spatial distribution of Anopheles sp. mosquito larvae in Dar es Salaam (Tanzania) during an extended dry period (2005)

Sattler, Michael A, Mtasiwa, Deo, Kiama, Michael, Premji, Zul, Tanner, Marcel, Killeen, Gerry F, ...

Abstract Introduction By 2030, more than 50% of the African population will live in urban areas. Controlling malaria reduces the disease burden and further improves economic development. As a...

Use and misuse of a discount voucher scheme as a subsidy for insecticide-treated nets for malaria control in southern Tanzania (2005)

Tami, Adriana, Mbati, Juliet, Nathan, Rose, Mponda, Haji, Lengeler, Christian

Since 1997, discount vouchers for insecticide-treated nets (ITNs) have been used in two rural districts of southern Tanzania as a way to target subsidies to children under 5 years and pregnant women....

Evaluation of Olyset™ insecticide-treated nets distributed seven years previously in Tanzania (2004)

Tami, Adriana, Mubyazi, Godfrey, Talbert, Alison, Mshinda, Hassan, Duchon, Stéphane, Lengeler, Christian

Abstract Background Insecticide-treated nets represent currently a key malaria control strategy, but low insecticide re-treatment rates remain problematic. Olyset™ nets are currently one of two...

Targeted subsidy for malaria control with treated nets using a discount voucher system in Tanzania (2003)

Mushi, Adiel K, Schellenberg, Joanna RM Armstrong, Mponda, Haji, Lengeler, Christian

During the last decade insecticide-treated nets have become a key strategy for malaria control. Social marketing is an appealing tool for getting such nets to poor rural African communities who are...

POLYPARASITISM WITH SCHISTOSOMA MANSONI, GEOHELMINTHS, AND INTESTINAL PROTOZOA IN RURAL CÔTE D'IVOIRE (2002)

Jennifer Keiser, Eliézer K. N'Goran, Mahamadou Traoré, Kouassi L. Lohourignon, Burton H. Singer, Christian Lengeler, ...

Single species infections with schistosomes, geohelminths, and intestinal protozoans are common over large parts of sub-Saharan Africa, and it is expected that polyparasitism affects a considerable...

Distribution of blood pressure, body mass index and smoking habits in the urban population of Dar es Salaam, Tanzania, and associations with socioeconomic status (2002)

Bovet, Pascal, Ross, Allen G, Gervasoni, Jean-Pierre, Mkamba, Mashombo, Mtasiwa, Deo M, Lengeler, Christian, ...

Objective To estimate the distribution of blood pressure (BP), body mass index (BMI), smoking habits and their associations with socioeconomic status (SES) in an urban population in early...

Controlling schistosomiasis: the cost-effectiveness of alternative delivery strategies (1994)

GUYATT, HELEN, EVANS, DAVID, LENGELER, CHRISTIAN, TANNER, MARCEL

Sustainable schistosomiasis control cannot be based on large-scale vertical treatment strategies in most endemic countries, yet little is known about the costs and effectiveness of more affordable...

Using questionnaires through an existing administrative system: a new approach to health interview surveys (1992)

LENGELER, CHRISTIAN, SALA-DIAKANDA, DANIEL M, TANNER, MARCEL

This paper reviews recent developments in the field of health interview procedures, and their contribution to decentralized health planning. Their importance is reflected in the growing awareness...

Community-Based Questionnaires and Health Statistics as Tools for the Cost-Efficient Identification of communities at Risk of Urinary Schistosomiasis (1991)

LENGELER, CHRISTIAN, SAVIGNY, DONALD DE, MSHINDA, HASSAN, MAYOMBANA, CHARLES, TAYARI, SEVERINO, HATZ, CHRISTOPH, ...

Self-administered questionnaries, distributed by existing administrative channels to village party chairman, head-teachers and schoolchildren, showed good diegnostic perfomance for the qualitative...

Malaria and urbanization in sub-Saharan Africa

Donnelly, Martin J, McCall, PJ, Lengeler, Christian, Bates, Imelda, D'Alessandro, Umberto, Barnish, Guy, ...

There are already 40 cities in Africa with over 1 million inhabitants and the United Nations Environmental Programme estimates that by 2025 over 800 million people will live in urban areas....

Malaria and urbanization in sub-Saharan Africa

Donnelly, Martin J, McCall, PJ, Lengeler, Christian, Bates, Imelda, D'Alessandro, Umberto, Barnish, Guy, ...

There are already 40 cities in Africa with over 1 million inhabitants and the United Nations Environmental Programme estimates that by 2025 over 800 million people will live in urban areas....

Preventing Childhood Malaria in Africa by Protecting Adults from Mosquitoes with Insecticide-Treated Nets

Killeen, Gerry F, Smith, Tom A, Ferguson, Heather M, Mshinda, Hassan, Abdulla, Salim, Lengeler, Christian, ...

Based on malaria transmission models, Gerry Killeen and colleagues suggest that, while coverage of pregnant women and children should still be prioritized, wide-scale communal use of...

Access to Health Care in Contexts of Livelihood Insecurity: A Framework for Analysis and Action

Obrist, Brigit, Iteba, Nelly, Lengeler, Christian, Makemba, Ahmed, Mshana, Christopher, Nathan, Rose, ...

The authors present a framework for analysis and action to explore and improve access to health care in resource-poor countries, especially in Africa.

Time To Move from Presumptive Malaria Treatment to Laboratory-Confirmed Diagnosis and Treatment in African Children with Fever

D'Acremont, Valérie, Lengeler, Christian, Mshinda, Hassan, Mtasiwa, Deo, Tanner, Marcel, Genton, Blaise

Background to the debate: Current guidelines recommend that all fever episodes in African children be treated presumptively with antimalarial drugs. But declining malarial transmission in parts of...

Questionnaires for rapid screening of schistosomiasis in sub-Saharan Africa.

Lengeler, Christian, Utzinger, Jürg, Tanner, Marcel

New initiatives are aiming to reduce the global burden of schistosomiasis, mainly through the large-scale application of chemotherapy. To target chemotherapy effectively, rapid assessment procedures...

Cost-effectiveness of social marketing of insecticide-treated nets for malaria control in the United Republic of Tanzania.

Hanson, Kara, Kikumbih, Nassor, Armstrong Schellenberg, Joanna, Mponda, Haji, Nathan, Rose, Lake, Sally, ...

OBJECTIVE: To assess the costs and consequences of a social marketing approach to malaria control in children by means of insecticide-treated nets in two rural districts of the United Republic of...