Publications by authors named "Mandomando I"

Background: Treatments for soil-transmitted helminthiases face challenges, especially in addressing Trichuris trichiura. Combination regimens, particularly of ivermectin and albendazole, are promising. We aimed to assess the safety, efficacy, and palatability of a combination tablet for the treatment of T trichiura, hookworm, and Strongyloides stercoralis infections among school-aged children in Ethiopia, Kenya, and Mozambique.

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Post rotavirus vaccine introduction in Mozambique (September 2015), we documented a decline in rotavirus-associated diarrhoea and genotypes changes in our diarrhoeal surveillance spanning 2008-2021. This study aimed to perform whole-genome sequencing of rotavirus strains from 2009 to 2012 (pre-vaccine) and 2017-2018 (post-vaccine). Rotavirus strains previously detected by conventional PCR as G2P[4], G2P[6], G3P[4], G8P[4], G8P[6], and G9P[6] from children with moderate-to-severe and less-severe diarrhoea and without diarrhoea (healthy community controls) were sequenced using Illumina MiSeq platform and analysed using bioinformatics tools.

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Introduction: Malnutrition contributes to 45% of all childhood deaths globally, but these modelled estimates lack direct measurements in countries with high malnutrition and under-5 mortality rates. We investigated malnutrition's role in infant and child deaths in the Child Health and Mortality Prevention Surveillance (CHAMPS) network.

Methods: We analysed CHAMPS data from seven sites (Bangladesh, Ethiopia, Kenya, Mali, Mozambique, Sierra Leone and South Africa) collected between 2016 and 2023.

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Background: Rotavirus vaccines are moderately protective against illness in high mortality settings compared with low mortality settings. Vaccine effectiveness (VE) evaluations may clarify our understanding of these disparities, but estimates among key subpopulations and against rare outcomes are not available in many analyses due to sample size. We combined 25 datasets from test-negative design case-control evaluations in 24 countries that enrolled children with medically-attended diarrhea, laboratory-confirmed rotavirus stool testing, and documented vaccination status.

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Article Synopsis
  • The study investigates the role of meningitis in child mortality under five years old, particularly focusing on data from six sub-Saharan African countries and Bangladesh.
  • It employs post-mortem minimally invasive tissue sampling (MITS) to identify the causes of death and pathogens responsible for meningitis in this age group from December 2016 to December 2023.
  • Findings reveal that meningitis contributed to 7% of child deaths, with common pathogens identified being Acinetobacter baumannii and Klebsiella pneumoniae, particularly affecting neonates and infants.
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Importance: The emergence of acute neurological symptoms in children necessitates immediate intervention. Although low- and middle-income countries (LMICs) bear the highest burden of neurological diseases, there is a scarcity of diagnostic and therapeutic resources. Therefore, current understanding of the etiology of neurological emergencies in LMICs relies mainly on clinical diagnoses and verbal autopsies.

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In resource-limited settings where vital registration and medical death certificates are unavailable or incomplete, verbal autopsy (VA) is often used to attribute causes of death (CoD) and prioritize resource allocation and interventions. We aimed to determine the CoD concordance between InterVA and CHAMPS's method. The causes of death (CoDs) of children <5 were determined by two methods using data from seven low- and middle-income countries (LMICs) enrolled in the Child Health and Mortality Prevention Surveillance (CHAMPS) network.

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Data collection was implemented through an initiative by the Child Health and Mortality Prevention Surveillance (CHAMPS) Network to assess whether lockdowns and other social distancing policies during COVID-19 had implications for household economic status, maternal and child health, and healthcare accessibility for pregnant women and children. The data were collected from April 2021 until February 2022 from a population living in a rural community of Mozambique. This rural community is located within a Health and Demographic Surveillance System (HDSS) that operates in the Manhiça district of Maputo province.

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Article Synopsis
  • Enteric viruses are the main cause of diarrhea in children under 5, with rotavirus being a well-researched culprit in Mozambique, though other viruses lack data post-vaccine.
  • The study investigated the prevalence of norovirus GI and GII, adenovirus 40/41, astrovirus, and sapovirus in children with varying severity of diarrhea before and after the introduction of the rotavirus vaccine.
  • Results showed that all viruses, except norovirus GI, were detected more frequently after the vaccine's introduction, highlighting the importance of ongoing monitoring for these viruses to improve disease prevention strategies.
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Introduction: Determining aetiology of severe illness can be difficult, especially in settings with limited diagnostic resources, yet critical for providing life-saving care. Our objective was to describe the accuracy of antemortem clinical diagnoses in young children in high-mortality settings, compared with results of specific postmortem diagnoses obtained from Child Health and Mortality Prevention Surveillance (CHAMPS).

Methods: We analysed data collected during 2016-2022 from seven sites in Africa and South Asia.

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Background: Mozambique was one of many African countries with limited testing capacity for SARS-CoV-2. Serosurveys, an alternative to estimate the real exposure to understand the epidemiology and transmission dynamics, have been scarce in Mozambique. Herein, we aimed to estimate the age-specific seroprevalence of SARS-CoV-2 in the general population of the Manhiça District, at four time points, for evaluating dynamics of exposure and the impact of vaccination.

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The COVID-19 pandemic has prompted countries to swiftly implement rigorous preventive measures on a population-wide scale worldwide. However, in low-income countries like Mozambique this was difficult, coupled with a generalised lack of knowledge on how the population understood and complied with these measures. This study assessed community perceptions and implementation of anti-COVID-19 measures recommended by Mozambican authorities in Manhiça and Quelimane districts, including confinement, social distancing, frequent handwashing, mask wearing, and quarantine as the key practices to evaluate.

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Staphylococcus aureus is a frequent agent of bacteraemia. This bacterium has a variety of virulence traits that allow the establishment and maintenance of infection. This study explored the virulence profile of S.

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Background: Quantitative molecular assays are increasingly used for detection of enteric viruses.

Methods: We compared the clinical severity using the modified Vesikari score (mVS) of enteric viruses detected by conventional assays (enzyme immunoassays [EIAs] for rotavirus and adenovirus 40/41 and conventional polymerase chain reaction for astrovirus, sapovirus, and norovirus) and a quantitative molecular assay (TaqMan Array Card [TAC]) among children aged 0-59 months in the Global Enteric Multicenter Study. For rotavirus and adenovirus 40/41, we compared severity between EIA-positive and TAC-positive cases assigned etiologies using different cycle threshold (Ct) cutoffs.

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Delays in illness recognition, healthcare seeking, and in the provision of appropriate clinical care are common in resource-limited settings. Our objective was to determine the frequency of delays in the "Three Delays-in-Healthcare", and factors associated with delays, among deceased infants and children in seven countries with high childhood mortality. We conducted a retrospective, descriptive study using data from verbal autopsies and medical records for infants and children aged 1-59 months who died between December 2016 and February 2022 in six sites in sub-Saharan Africa and one in South Asia (Bangladesh) and were enrolled in Child Health and Mortality Prevention Surveillance (CHAMPS).

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Background: Malaria is a leading cause of childhood mortality worldwide. However, accurate estimates of malaria prevalence and causality among patients who die at the country level are lacking due to the limited specificity of diagnostic tools used to attribute etiologies. Accurate estimates are crucial for prioritizing interventions and resources aimed at reducing malaria-related mortality.

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Article Synopsis
  • The CHAMPS Network investigates childhood deaths, focusing on pneumonia's role and the pathogens involved in cases from six sub-Saharan African countries and Bangladesh from December 2016 to December 2022.
  • Out of 1,120 deaths analyzed, pneumonia was identified as a contributing factor in 40.6%, with most victims being around 9 months old, and 82.9% of these cases had identifiable pathogens.
  • Among the pneumonia deaths, community-acquired pneumonia was responsible for 67.3%, with leading pathogens including Streptococcus pneumoniae and Klebsiella pneumoniae, while 32.7% were linked to hospital-acquired pneumonia.
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Background: Klebsiella pneumoniae is an important cause of nosocomial and community-acquired pneumonia and sepsis in children, and antibiotic-resistant K pneumoniae is a growing public health threat. We aimed to characterise child mortality associated with this pathogen in seven high-mortality settings.

Methods: We analysed Child Health and Mortality Prevention Surveillance (CHAMPS) data on the causes of deaths in children younger than 5 years and stillbirths in sites located in seven countries across sub-Saharan Africa (Ethiopia, Kenya, Mali, Mozambique, Sierra Leone, and South Africa) and south Asia (Bangladesh) from Dec 9, 2016, to Dec 31, 2021.

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Article Synopsis
  • * The survey found that a vast majority of respondents were aware of COVID-19 symptoms, transmission, and prevention methods, with high recognition of handwashing (91.9%) and mask-wearing (91.8%) as key preventive measures.
  • * Factors influencing knowledge included education level, age, employment status, wealth, and religion, with information from media sources like television and WhatsApp playing a significant role in enhancing community awareness about the virus.
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The Two Weeks in the World research project has resulted in a dataset of 3087 clinically relevant bacterial genomes with pertaining metadata, collected from 59 diagnostic units in 35 countries around the world during 2020. A relational database is available with metadata and summary data from selected bioinformatic analysis, such as species prediction and identification of acquired resistance genes.

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Background: Most childhood deaths globally are considered preventable through high-quality clinical care, which includes adherence to clinical care recommendations. Our objective was to describe adherence to World Health Organization recommendations for the management of leading causes of death among children.

Methods: We conducted a retrospective, descriptive study examining clinical data for children aged 1-59 months who were hospitalized and died in a Child Health and Mortality Prevention Surveillance (CHAMPS) catchment, December 2016-June 2021.

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Article Synopsis
  • Invasive Group B Streptococcus (GBS) is a major factor in early-onset neonatal sepsis and stillbirth, which this study evaluated in seven low- and middle-income countries to determine its impact on infant mortality.
  • The research included the analysis of 2,966 deaths from December 2016 to December 2021 using minimally invasive tissue sampling, identifying GBS as a contributing factor in 2.7% of infant deaths, including 2.3% of stillborn cases.
  • Results showed significant variation in GBS-attributed deaths across countries, particularly affecting low-birth-weight infants, highlighting the need for tailored interventions in different regions to address this issue.
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Article Synopsis
  • Laboratories in the IB-VPD network must effectively identify the causes of pediatric bacterial meningitis through Gram stains and phenotypic methods, with data from the WHO's external quality assessments analyzed from 2014 to 2019.
  • Results showed that only 63% of sentinel site and national labs correctly identified pathogens in 2019, with earlier assessments indicating challenges in Gram staining and culture identification.
  • A strong quality management system is necessary to address performance gaps and to implement corrective measures for accurate pathogen detection.
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Background: is one of the main causes of bacteraemia, associated with high mortality, mainly due to the occurrence of multidrug resistant (MDR) strains. Data on antibiotic susceptibility and genetic lineages of bacteraemic are still scarce in Mozambique. The study aims to describe the antibiotic susceptibility and clonality of isolated from blood cultures of children admitted to the Manhiça District Hospital over two decades (2001-2019).

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Importance: The number of deaths of children younger than 5 years has been steadily decreasing worldwide, from more than 17 million annual deaths in the 1970s to an estimated 5.3 million in 2019 (with 2.8 million deaths occurring in those aged 1-59 months [53% of all deaths in children aged <5 years]).

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