Publications by authors named "John M Ssenkusu"

Background: In many sub-Saharan African countries, it is recommended that children with sickle cell anaemia receive malaria chemoprevention with monthly sulfadoxine-pyrimethamine or daily proguanil as the standard of care. However, the efficacy of these interventions is compromised by high-grade antifolate resistance of Plasmodium falciparum and poor adherence. We aimed to compare the efficacy of weekly dihydroartemisinin-piperaquine and monthly sulfadoxine-pyrimethamine for the prevention of clinical malaria in children with sickle cell anaemia in areas with high-grade sulfadoxine-pyrimethamine resistance of P falciparum in Uganda and Malawi.

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Background: Children with sickle cell anemia (SCA) in Sub-Saharan Africa are at high risk of sickle cerebrovascular injury (SCVI). Hydroxyurea, a commonly used disease-modifying therapy, may reduce SCVI resulting in potential impact on reducing stroke and cognitive dysfunction. We aim to test the impact of daily hydroxyurea therapy on these outcomes in Ugandan children with SCA.

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Background: Preterm birth is the leading cause of childhood mortality, and respiratory distress syndrome is the predominant cause of these deaths. Early continuous positive airway pressure is effective in high-resource settings, reducing the rate of continuous positive airway pressure failure, and the need for mechanical ventilation and surfactant. However, most deaths in preterm infants occur in low-resource settings without access to mechanical ventilation or surfactant.

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Objective: Academic achievement in school-age children is crucial for advancing learning goals. Children with sickle cell anaemia (SCA) in Sub-Saharan Africa may be at risk of disease-associated school difficulties. Limited data exist on the academic achievement of children with SCA in the region.

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Background: Health systems are resilient if they absorb, adapt, and transform in response to shocks. Although absorptive and adaptive capacities have been demonstrated during the COVID-19 response, little has been documented about their transformability and strengthened service delivery systems. We aimed to describe improvements in maternal and child health service delivery as a result of investments during the COVID-19 response.

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Background: Children with sickle cell anemia (SCA) in Sub-Saharan Africa are at high risk of sickle cerebrovascular injury (SCVI). Hydroxyurea, a commonly used disease-modifying therapy, may prevent or decrease SCVI for reduced incident stroke, stroke risk and potentially cognitive dysfunction. We aim to test the impact of daily hydroxyurea therapy on these outcomes in Ugandan children with SCA.

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Background: Malaria, a major cause of mortality worldwide is linked to a web of determinants ranging from individual to contextual factors. This calls for examining the magnitude of the effect of clustering within malaria data. Regrettably, researchers usually ignore cluster variation on the risk of malaria and also apply final survey weights in multilevel modelling instead of multilevel weights.

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Severe anemia is an important contributor to mortality in children with severe malaria. Anemia in malaria is a multi-factorial complication, since dyserythropoiesis, hemolysis and phagocytic clearance of uninfected red blood cells (RBCs) can contribute to this syndrome. High levels of oxidative stress and immune dysregulation have been proposed to contribute to severe malarial anemia, facilitating the clearance of uninfected RBCs.

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Preterm birth is a leading cause of death in children under five years of age. We hypothesized that sequential disruptions to inflammatory and angiogenic pathways during pregnancy increase the risk of placental insufficiency and spontaneous preterm labor and delivery. We conducted a secondary analysis of inflammatory and angiogenic analytes measured in plasma samples collected across pregnancy from 1462 Malawian women.

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Article Synopsis
  • Research indicates that children who have experienced cerebral malaria (CM) or severe malarial anemia (SMA) may face long-term academic challenges, particularly in reading skills.
  • A study in Uganda analyzed the academic performance of children who had CM or SMA, finding lower reading and spelling scores compared to their peers from the same community.
  • The presence of additional malaria episodes after discharge further worsened reading outcomes, suggesting that preventive measures against malaria may help improve academic achievement in these children.
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Article Synopsis
  • Global changes in amino acid levels were studied in Ugandan children with severe malaria (SM) to assess their long-term health outcomes, particularly kidney function and cognition.
  • The study found deficiencies in certain sulfur-containing amino acids and identified specific amino acid increases related to mortality and chronic kidney disease (CKD).
  • Unique amino acid profiles in children with SM were linked to negative health consequences, including higher risks of mortality and cognitive issues, especially attention problems in younger children.
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Urine neutrophil gelatinase-associated lipocalin (NGAL) is a biomarker of acute kidney injury that has been adapted to a urine dipstick test. However, there is limited data on its use in low-and-middle-income countries where diagnosis of acute kidney injury remains a challenge. To study this, we prospectively enrolled 250 children with sickle cell anemia aged two to 18 years encompassing 185 children hospitalized with a vaso-occlusive pain crisis and a reference group of 65 children attending the sickle cell clinic for routine care follow up.

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Article Synopsis
  • A study conducted in Uganda followed 598 children with severe malaria and 118 community children over 12 months to investigate the prevalence and outcomes of acute kidney injury (AKI) and persistent kidney disease (acute kidney disease, AKD) following AKI.
  • The findings revealed a high incidence of AKI at 45.3%, with a significant link to in-hospital mortality, especially among those with severe AKI.
  • The study emphasized that children with unresolved AKI faced increased risks of developing AKD and higher post-discharge mortality, highlighting potential benefits of paracetamol use during hospitalization.
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Introduction: Maternal mortality remains a global public health issue, more predominantly in developing countries, and is associated with poor maternal health services utilization. Antenatal care (ANC) visits are positively associated with facility delivery and postnatal care (PNC) utilization. However, ANC in itself may not lead to such association but due to differences that exist among users (women).

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Background: Acute kidney injury (AKI) disproportionately affects individuals in low-and middle-income countries (LMIC). However, LMIC-particularly countries in sub-Saharan Africa- are under-represented in global AKI research. A critical barrier in diagnosing AKI is access to reliable serum creatinine results.

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In rural sub-Saharan Africa, preventable delays in accessing emergency care remain a dominant factor in maternal and neonatal deaths. The MOMENTUM study is a pragmatic cohort investigation designed to measure the "Three Delays", i.e.

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Background: In 2011, the World Health Organization recommended injectable artesunate as the first-line therapy for severe malaria (SM) due to its superiority in reducing mortality compared to quinine. There are limited data on long-term clinical and neurobehavioral outcomes after artemisinin use for treatment of SM.

Methods: From 2008 to 2013, 502 Ugandan children with two common forms of SM, cerebral malaria and severe malarial anemia, were enrolled in a prospective observational study assessing long-term neurobehavioral and cognitive outcomes following SM.

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Background: Severe malaria is associated with long-term mental health problems in Ugandan children. This study investigated the effect of a behavioural intervention for caregivers of children admitted with severe malaria, on the children's mental health outcomes 6 months after discharge.

Methods: This randomized controlled trial was conducted at Naguru Hospital in Kampala, Uganda from January 2018 to July 2019.

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Background: Alcohol use leads to about 3 million deaths globally. The alcohol industry employs marketing strategies to establish their brands in the lives of young people at a time when addictive behaviors are initiated and reinforced. We conducted a survey among adolescent boys and young men (ABYM) to estimate the prevalence of alcohol use and associated factors using the Health Belief Model as the guiding framework.

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Background: HIV infection is associated with significant neurocognitive deficits making maximization of cognitive function among children receiving antiretroviral therapy (ART) a public health imperative. Non-protease inhibitors (non-PIs) achieve higher drug levels in the cerebral spinal fluid (CSF) compared to PIs, potentially leading to better neurocognitive function by reducing CSF viral load and inflammation. ART that maximises children's neurodevelopment and school achievement could result in improved quality of life and productivity as adults, but little research to date has examined whether non-PI ART is associated with better neurocognitive outcomes.

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Article Synopsis
  • Elevated levels of angiopoietin-2 (Angpt-2) in severe malaria survivors are linked to poorer overall neurocognitive function, particularly in children under five.
  • The study evaluated Ugandan children post-severe malaria using cognitive assessment tools and considered various factors affecting outcomes, such as disease severity and socio-demographics.
  • Results indicated that higher Angpt-2 levels correlated with worse motor, language, and processing skills in younger children, while no significant effects were seen in older children.
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Background: Severe anaemia is a global public health challenge commonly associated with morbidity and mortality among children < 5 years of age in Sub-Saharan Africa. However, less is known about the behavioural performance of children < 5 years surviving severe anaemia in low resource settings. We investigated social-emotional and adaptive behaviour in children < 5 years diagnosed with severe anaemia in Northern Uganda.

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Background: Severe anaemia is a common clinical problem among young children in sub-Saharan Africa. However, the effect of severe anaemia on neurodevelopment of these children is not well described. Therefore, we assessed the neurodevelopmental performance of preschool children diagnosed with severe anaemia in Northern Uganda.

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Background: Acute kidney injury (AKI) is increasingly recognized as a consequential clinical complication in children with severe malaria. However, approaches to estimate baseline creatinine (bSCr) are not standardized in this unique patient population. Prior to wide-spread utilization, bSCr estimation methods need to be evaluated in many populations, particularly in children from low-income countries.

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Objectives: Evaluate the relationship between endothelial activation, malaria complications, and long-term cognitive outcomes in severe malaria survivors.

Design: Prospectively cohort study of children with cerebral malaria, severe malarial anemia, or community children.

Setting: Mulago National Referral Hospital in Kampala, Uganda.

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