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Featured researches published by Charles Mwansambo.


The Lancet | 2013

Women's groups practising participatory learning and action to improve maternal and newborn health in low-resource settings: a systematic review and meta-analysis

Audrey Prost; Tim Colbourn; Nadine Seward; Kishwar Azad; Arri Coomarasamy; Andrew Copas; Tanja A. J. Houweling; Edward Fottrell; Abdul Kuddus; Sonia Lewycka; Christine MacArthur; Dharma Manandhar; Joanna Morrison; Charles Mwansambo; Nirmala Nair; Bejoy Nambiar; David Osrin; Christina Pagel; Tambosi Phiri; Anni-Maria Pulkki-Brännström; Mikey Rosato; Jolene Skordis-Worrall; Naomi Saville; Neena Shah More; Bhim Shrestha; Prasanta Tripathy; Amie Wilson; Anthony Costello

BACKGROUND Maternal and neonatal mortality rates remain high in many low-income and middle-income countries. Different approaches for the improvement of birth outcomes have been used in community-based interventions, with heterogeneous effects on survival. We assessed the effects of womens groups practising participatory learning and action, compared with usual care, on birth outcomes in low-resource settings. METHODS We did a systematic review and meta-analysis of randomised controlled trials undertaken in Bangladesh, India, Malawi, and Nepal in which the effects of womens groups practising participatory learning and action were assessed to identify population-level predictors of effect on maternal mortality, neonatal mortality, and stillbirths. We also reviewed the cost-effectiveness of the womens group intervention and estimated its potential effect at scale in Countdown countries. FINDINGS Seven trials (119,428 births) met the inclusion criteria. Meta-analyses of all trials showed that exposure to womens groups was associated with a 37% reduction in maternal mortality (odds ratio 0.63, 95% CI 0.32-0.94), a 23% reduction in neonatal mortality (0.77, 0.65-0.90), and a 9% non-significant reduction in stillbirths (0.91, 0.79-1.03), with high heterogeneity for maternal (I(2)=58.8%, p=0.024) and neonatal results (I(2)=64.7%, p=0.009). In the meta-regression analyses, the proportion of pregnant women in groups was linearly associated with reduction in both maternal and neonatal mortality (p=0.026 and p=0.011, respectively). A subgroup analysis of the four studies in which at least 30% of pregnant women participated in groups showed a 55% reduction in maternal mortality (0.45, 0.17-0.73) and a 33% reduction in neonatal mortality (0.67, 0.59-0.74). The intervention was cost effective by WHO standards and could save an estimated 283,000 newborn infants and 41,100 mothers per year if implemented in rural areas of 74 Countdown countries. INTERPRETATION With the participation of at least a third of pregnant women and adequate population coverage, womens groups practising participatory learning and action are a cost-effective strategy to improve maternal and neonatal survival in low-resource settings. FUNDING Wellcome Trust, Ammalife, and National Institute for Health Research Collaboration for Leadership in Applied Health Research and Care for Birmingham and the Black Country programme.


The Lancet | 2014

Every Newborn: health-systems bottlenecks and strategies to accelerate scale-up in countries

Kim E Dickson; Aline Simen-Kapeu; Mary V Kinney; Luis Huicho; Linda Vesel; Eve M. Lackritz; Joseph de Graft Johnson; Severin von Xylander; Nuzhat Rafique; Mariame Sylla; Charles Mwansambo; Bernadette Daelmans; Joy E Lawn

Universal coverage of essential interventions would reduce neonatal deaths by an estimated 71%, benefit women and children after the first month, and reduce stillbirths. However, the packages with the greatest effect (care around birth, care of small and ill newborn babies), have low and inequitable coverage and are the most sensitive markers of health system function. In eight of the 13 countries with the most neonatal deaths (55% worldwide), we undertook a systematic assessment of bottlenecks to essential maternal and newborn health care, involving more than 600 experts. Of 2465 bottlenecks identified, common constraints were found in all high-burden countries, notably regarding the health workforce, financing, and service delivery. However, bottlenecks for specific interventions might differ across similar health systems. For example, the implementation of kangaroo mother care was noted as challenging in the four Asian country workshops, but was regarded as a feasible aspect of preterm care by respondents in the four African countries. If all high-burden countries achieved the neonatal mortality rates of their regions fastest progressing countries, then the mortality goal of ten or fewer per 1000 livebirths by 2035 recommended in this Series and the Every Newborn Action Plan would be exceeded. We therefore examined fast progressing countries to identify strategies to reduce neonatal mortality. We identified several key factors: (1) workforce planning to increase numbers and upgrade specific skills for care at birth and of small and ill newborn babies, task sharing, incentives for rural health workers; (2) financial protection measures, such as expansion of health insurance, conditional cash transfers, and performance-based financing; and (3) dynamic leadership including innovation and community empowerment. Adapting from the 2005 Lancet Series on neonatal survival and drawing on this Every Newborn Series, we propose a country-led, data-driven process to sharpen national health plans, seize opportunities to address the quality gap for care at birth and care of small and ill newborn babies, and systematically scale up care to reach every mother and newborn baby, particularly the poorest.


The Lancet | 2013

Effect of women's groups and volunteer peer counselling on rates of mortality, morbidity, and health behaviours in mothers and children in rural Malawi (MaiMwana): a factorial, cluster-randomised controlled trial

Sonia Lewycka; Charles Mwansambo; Mikey Rosato; Peter N. Kazembe; Tambosi Phiri; Andrew Mganga; Hilda Chapota; Florida Malamba; Esther Kainja; Marie-Louise Newell; Giulia Greco; Anni-Maria Pulkki-Brännström; Jolene Skordis-Worrall; Stefania Vergnano; David Osrin; Anthony Costello

BACKGROUND Womens groups and health education by peer counsellors can improve the health of mothers and children. We assessed their effects on mortality and breastfeeding rates in rural Malawi. METHODS We did a 2×2 factorial, cluster-randomised trial in 185,888 people in Mchinji district. 48 equal-sized clusters were randomly allocated to four groups with a computer-generated number sequence. 24 facilitators guided groups through a community action cycle to tackle maternal and child health problems. 72 trained volunteer peer counsellors made home visits at five timepoints during pregnancy and after birth to support breastfeeding and infant care. Primary outcomes for the womens group intervention were maternal, perinatal, neonatal, and infant mortality rates (MMR, PMR, NMR, and IMR, respectively); and for the peer counselling were IMR and exclusive breastfeeding (EBF) rates. Analysis was by intention to treat. The trial is registered as ISRCTN06477126. FINDINGS We monitored outcomes of 26,262 births between 2005 and 2009. In a factorial model adjusted only for clustering and the volunteer peer counselling intervention, in womens group areas, for years 2 and 3, we noted non-significant decreases in NMR (odds ratio 0.93, 0.64-1.35) and MMR (0.54, 0.28-1.04). After adjustment for parity, socioeconomic quintile, and baseline measures, effects were larger for NMR (0.85, 0.59-1.22) and MMR (0.48, 0.26-0.91). Because of the interaction between the two interventions, a stratified analysis was done. For womens groups, in adjusted analyses, MMR fell by 74% (0.26, 0.10-0.70), and NMR by 41% (0.59, 0.40-0.86) in areas with no peer counsellors, but there was no effect in areas with counsellors (1.09, 0.40-2.98, and 1.38, 0.75-2.54). Factorial analysis for the peer counselling intervention for years 1-3 showed a fall in IMR of 18% (0.82, 0.67-1.00) and an improvement in EBF rates (2.42, 1.48-3.96). The results of the stratified, adjusted analysis showed a 36% reduction in IMR (0.64, 0.48-0.85) but no effect on EBF (1.18, 0.63-2.25) in areas without womens groups, and in areas with womens groups there was no effect on IMR (1.05, 0.82-1.36) and an increase in EBF (5.02, 2.67-9.44). The cost of womens groups was US


Lancet Infectious Diseases | 2015

Effectiveness of a monovalent rotavirus vaccine in infants in Malawi after programmatic roll-out: an observational and case-control study

Naor Bar-Zeev; Lester Kapanda; Jacqueline E. Tate; Khuzwayo C. Jere; Miren Iturriza-Gomara; Osamu Nakagomi; Charles Mwansambo; Anthony Costello; Umesh D. Parashar; Robert S. Heyderman; Neil French; Nigel A. Cunliffe

114 per year of life lost (YLL) averted and that of peer counsellors was


The Journal of Infectious Diseases | 2012

Evaluation of tuberculosis diagnostics in children: 2. Methodological issues for conducting and reporting research evaluations of tuberculosis diagnostics for intrathoracic tuberculosis in children. Consensus from an expert panel.

Luis E. Cuevas; Renee Browning; Patrick M. Bossuyt; Martina Casenghi; Mark F. Cotton; Andrea T. Cruz; Lori E. Dodd; Francis Drobniewski; Marianne Gale; Stephen M. Graham; Malgosia Grzemska; Norbert Heinrich; Anneke C. Hesseling; Robin E. Huebner; Patrick Jean-Philippe; Sushil K. Kabra; Beate Kampmann; Deborah A. Lewinsohn; Meijuan Li; Christian Lienhardt; Anna M. Mandalakas; Ben J. Marais; Heather J. Menzies; Grace Montepiedra; Charles Mwansambo; Richard A. Oberhelman; Paul Palumbo; Estelle Russek-Cohen; David Shapiro; Betsy Smith

33 per YLL averted, using stratified data from single intervention comparisons. INTERPRETATION Community mobilisation through womens groups and volunteer peer counsellor health education are methods to improve maternal and child health outcomes in poor rural populations in Africa. FUNDING Saving Newborn Lives, UK Department for International Development, and Wellcome Trust.


The Lancet | 2009

Estimation of potential effects of improved community-based drug provision, to augment health-facility strengthening, on maternal mortality due to post-partum haemorrhage and sepsis in sub-Saharan Africa: an equity-effectiveness model

Christina Pagel; Sonia Lewycka; Tim Colbourn; Charles Mwansambo; Tarek Meguid; Grace Chiudzu; Martin Utley; Anthony Costello

Summary Background Rotavirus is the main cause of severe acute gastroenteritis in children in Africa. Monovalent human rotavirus vaccine (RV1) was added into Malawis infant immunisation schedule on Oct 29, 2012. We aimed to assess the impact and effectiveness of RV1 on rotavirus gastroenteritis in the 2 years after introduction. Methods From Jan 1, 2012, to June 30, 2014, we recruited children younger than 5 years who were admitted into Queen Elizabeth Central Hospital, Blantyre, Malawi, with acute gastroenteritis. We assessed stool samples from these children for presence of rotavirus with use of ELISA and we genotyped rotaviruses with use of RT-PCR. We compared rotavirus detection rates in stool samples and incidence of hospital admittance for rotavirus in children from Jan 1 to June 30, in the year before vaccination (2012) with the same months in the 2 years after vaccination was introduced (2013 and 2014). In the case-control portion of our study, we recruited eligible rotavirus-positive children from the surveillance platform and calculated vaccine effectiveness (one minus the odds ratio of vaccination) by comparing infants with rotavirus gastroenteritis with infants who tested negative for rotavirus, and with community age-matched and neighbourhood-matched controls. Findings We enrolled 1431 children, from whom we obtained 1417 stool samples (99%). We detected rotavirus in 79 of 157 infants (50%) before the vaccine, compared with 57 of 219 (40%) and 52 of 170 (31%) in successive calendar years after vaccine introduction (p=0·0002). In the first half of 2012, incidence of rotavirus hospital admission was 269 per 100 000 infants compared with 284 in the same months of 2013 (rise of 5·8%, 95% CI −23·1 to 45·4; p=0·73) and 153 in these months in 2014 (a reduction from the prevaccine period of 43·2%, 18·0–60·7; p=0·003). We recruited 118 vaccine-eligible rotavirus cases (median age 8·9 months; IQR 6·6–11·1), 317 rotavirus-test-negative controls (9·4 months; 6·9–11·9), and 380 community controls (8·8 months; 6·5–11·1). Vaccine effectiveness for two doses of RV1 in rotavirus-negative individuals was 64% (95% CI 24–83) and community controls was 63% (23–83). The point estimate of effectiveness was higher against genotype G1 than against G2 and G12. Interpretation Routine use of RV1 reduced hospital admissions for several genotypes of rotavirus in children younger than 5 years, especially in infants younger than 1 year. Our data support introduction of rotavirus vaccination at the WHO recommended schedule, with continuing surveillance in high-mortality countries. Funding Wellcome Trust, GlaxoSmithKline Biologicals.


Trials | 2010

A cluster randomised controlled trial of the community effectiveness of two interventions in rural Malawi to improve health care and to reduce maternal, newborn and infant mortality

Sonia Lewycka; Charles Mwansambo; Peter N. Kazembe; Tambosi Phiri; Andrew Mganga; Mikey Rosato; Hilda Chapota; Florida Malamba; Stefania Vergnano; Marie-Louise Newell; David Osrin; Anthony Costello

Confirming the diagnosis of childhood tuberculosis is a major challenge. However, research on childhood tuberculosis as it relates to better diagnostics is often neglected because of technical difficulties, such as the slow growth in culture, the difficulty of obtaining specimens, and the diverse and relatively nonspecific clinical presentation of tuberculosis in this age group. Researchers often use individually designed criteria for enrollment, diagnostic classifications, and reference standards, thereby hindering the interpretation and comparability of their findings. The development of standardized research approaches and definitions is therefore needed to strengthen the evaluation of new diagnostics for detection and confirmation of tuberculosis in children. In this article we present consensus statements on methodological issues for conducting research of Tuberculosis diagnostics among children, with a focus on intrathoracic tuberculosis. The statements are complementary to a clinical research case definition presented in an accompanying publication and suggest a phased approach to diagnostics evaluation; entry criteria for enrollment; methods for classification of disease certainty, including the rational use of culture within the case definition; age categories and comorbidities for reporting results; and the need to use standard operating procedures. Special consideration is given to the performance of microbiological culture in children and we also recommend for alternative methodological approaches to report findings in a standardized manner to overcome these limitations are made. This consensus statement is an important step toward ensuring greater rigor and comparability of pediatric tuberculosis diagnostic research, with the aim of realizing the full potential of better tests for children.


PLOS ONE | 2010

Task Shifting Routine Inpatient Pediatric HIV Testing Improves Program Outcomes in Urban Malawi: A Retrospective Observational Study

Eric D. McCollum; Geoffrey A. Preidis; Mark M. Kabue; Emmanuel B. M. Singogo; Charles Mwansambo; Peter N. Kazembe; Mark W. Kline

BACKGROUND Maternal mortality in Africa has changed little since 1990. We developed a mathematical model with the aim to assess whether improved community-based access to life-saving drugs, to augment a core programme of health-facility strengthening, could reduce maternal mortality due to post-partum haemorrhage or sepsis. METHODS We developed a mathematical model by considering the key events leading to maternal death from post-partum haemorrhage or sepsis after delivery. With parameter estimates from published work of occurrence of post-partum haemorrhage and sepsis, case fatality, and the effectiveness of drugs, we used this model to estimate the effect of three potential packages of interventions: 1) health-facility strengthening; 2) health-facility strengthening combined with improved drug provision via antenatal-care appointments and community health workers; and 3) all interventions in package two combined with improved community-based drug provision via female volunteers in villages. The model was applied to Malawi and sub-Saharan Africa. FINDINGS In the implementation of the model, the lowest risk deliveries were those in health facilities. With the model we estimated that of 2860 maternal deaths from post-partum haemorrhage or sepsis per year in Malawi, intervention package one could prevent 210 (7%) deaths, package two 720 (25%) deaths, and package three 1020 (36%) deaths. In sub-Saharan Africa, we estimated that of 182 000 of such maternal deaths per year, these three packages could prevent 21 300 (12%), 43 800 (24%), and 59 000 (32%) deaths, respectively. The estimated effect of community-based drug provision was greatest for the poorest women. INTERPRETATION Community provision of misoprostol and antibiotics to reduce maternal deaths from post-partum haemorrhage and sepsis could be a highly effective addition to health-facility strengthening in Africa. Investigation of such interventions is urgently needed to establish the risks, benefits, and challenges of widespread implementation. FUNDING Institute of Child Health and Faculty of Mathematical and Physical Sciences, University College London, and a donation from John and Ann-Margaret Walton.


Emerging Infectious Diseases | 2009

Serotype G12 rotaviruses, Lilongwe, Malawi.

Nigel A. Cunliffe; Bagrey Ngwira; Winifred Dove; Osamu Nakagomi; Toyoko Nakagomi; A. Perez; C. A. Hart; P. N. Kazembe; Charles Mwansambo

LIBON has three impact-oriented and innovative sub-goals: Sub-Goal 1: To reduce neonatal mortality in the districts of Sunsari and Parsa through the application of an integrated community-based package of interventions and service delivery strategies. Sub-Goal 2: To promote social inclusion and a fact-based decision making process for the planning and resource allocation of district-based child maternal and neonatal programs. Sub-Goal 3: To assist the MOHP and other constituencies in the preparation and use of knowledge policy and investment products that will accelerate the reduction of neonatal mortality. The LIBON project is a strong community based neonatal mortality reduction program based in three districts Sunsari Parsa and Bara in the Terai of Nepal where difficult terrain limited communications political unrest and extreme poverty and limited access to health services are the rule. The project focuses its key interventions to reach target populations of pregnant and post partum women and neonates and reaches more than 900000 people. Key strategies to reduce maternal and neonatal mortality improve family behaviors and increase access to quality services focus on the expansion of the Pregnant Women’s Group implementing the new Government of Nepal’s Community Based Neonatal Care Program (CB-NCP). (Excerpt)


International Health | 2013

Effects of quality improvement in health facilities and community mobilization through women's groups on maternal, neonatal and perinatal mortality in three districts of Malawi: MaiKhanda, a cluster randomized controlled effectiveness trial

Tim Colbourn; Bejoy Nambiar; Austin Bondo; Charles Makwenda; Eric Tsetekani; Agnes Makonda-Ridley; Martin Msukwa; Pierre Barker; Uma R. Kotagal; Cassie Williams; Ros Davies; Dale Webb; Dorothy Flatman; Sonia Lewycka; Mikey Rosato; Fannie Kachale; Charles Mwansambo; Anthony Costello

Background This study evaluated two models of routine HIV testing of hospitalized children in a high HIV-prevalence resource-constrained African setting. Both models incorporated “task shifting,” or the allocation of tasks to the least-costly, capable health worker. Methods and Findings Two models were piloted for three months each within the pediatric department of a referral hospital in Lilongwe, Malawi between January 1 and June 30, 2008. Model 1 utilized lay counselors for HIV testing instead of nurses and clinicians. Model 2 further shifted program flow and advocacy responsibilities from counselors to volunteer parents of HIV-infected children, called “patient escorts.” A retrospective review of data from 6318 hospitalized children offered HIV testing between January-December 2008 was conducted. The pilot quarters of Model 1 and Model 2 were compared, with Model 2 selected to continue after the pilot period. There was a 2-fold increase in patients offered HIV testing with Model 2 compared with Model 1 (43.1% vs 19.9%, p<0.001). Furthermore, patients in Model 2 were younger (17.3 vs 26.7 months, p<0.001) and tested sooner after admission (1.77 vs 2.44 days, p<0.001). There were no differences in test acceptance or enrollment rates into HIV care, and the program trends continued 6 months after the pilot period. Overall, 10244 HIV antibody tests (4779 maternal; 5465 child) and 453 DNA-PCR tests were completed, with 97.8% accepting testing. 19.6% of all mothers (n = 1112) and 8.5% of all children (n = 525) were HIV-infected. Furthermore, 6.5% of children were HIV-exposed (n = 405). Cumulatively, 72.9% (n = 678) of eligible children were evaluated in the hospital by a HIV-trained clinician, and 68.3% (n = 387) successfully enrolled into outpatient HIV care. Conclusions/Significance The strategy presented here, task shifting from lay counselors alone to lay counselors and patient escorts, greatly improved program outcomes while only marginally increasing operational costs. The wider implementation of this strategy could accelerate pediatric HIV care access in high-prevalence settings.

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Tim Colbourn

University College London

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Bejoy Nambiar

University College London

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Carina King

University College London

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Sonia Lewycka

University College London

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David Osrin

University College London

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