Sammy Khagayi
Biographic Data
| ID | 5593941 |
|---|---|
| NAME | Sammy Khagayi |
| GIVEN NAMES | Sammy |
| FAMILY NAME | Khagayi |
| SIGNATURE | KHAGAYI S |
| AFFILIATIONS | Kenya Medical Research Institute |
| ORCID | 0000-0002-2470-1851 |
| VERIFIED | Yes |
| TOTAL WORKS | 15 |
| TOTAL CITATIONS | 0 |
| AUTHOR COUNT | 15 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2014 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 0 |
A comparison of all-cause and HIV cause-specific mortality among children under 5 years of age before and during Covid-19 in Kenya, 2018–2022
The impact of the COVID-19 pandemic on pediatric mortality, including measures to ensure continuity of HIV care, is not well described in Kenya. We evaluated causes of death (COD) among decedents under 5 years of age both before and during the COVID-19 pandemic in Kenya. We analyzed Child Health and Mortality Prevention Surveillance (CHAMPS) data collected in February 2018–March 2022. We describe the proportional contribution of specific conditio…
Impact of a multilevel HIV prevention programme on adolescent girls and young women’s empowerment for risk reduction
Empowerment is key to person-centered HIV prevention. This study aims to evaluate the extent to which the Determined, Resilient, Empowered, AIDS-free, Mentored, Safe (DREAMS) Partnership promotes empowerment of adolescent girls and young women (AGYW) in Kenya. We conducted a mixed-methods study to examine DREAMS influence on empowerment precursors (resources, agency, institutional structures) and outcomes, guided by Kabeer’s framework for women’s…
Widowed and at risk
From a decade long follow-up, we show a disproportionately high and increasing prevalence of HIV among widowed women in Siaya, Kenya. Among both widowed and married women, there was an association between living with HIV and younger age, 10-year younger sexual partners and experiencing forced sex. Policies that prioritize widowed women could assist in the development of targeted interventions that address the unique challenges of this important s…
Pregnancy reporting and biases in under-five mortality in three African HDSSs
In the absence of complete civil registration and vital statistics, Health and Demographic Surveillance Systems (HDSSs) are important sources of population-based data throughout sub-Saharan Africa. However, HDSS data on the vital status of newborns are often unreliable due to omission of those who were born and died between two rounds of data collection and are therefore never enumerated. This study investigates whether pregnancy registration imp…
The effects of climatic and non-climatic factors on malaria mortality at different spatial scales in western Kenya, 2008–2019
BACKGROUND: Malaria mortality is influenced by several factors including climatic and environmental factors, interventions, socioeconomic status (SES) and access to health systems. Here, we investigated the joint effects of climatic and non-climatic factors on under-five malaria mortality at different spatial scales using data from a Health and Demographic Surveillance System (HDSS) in western Kenya. METHODS: We fitted Bayesian spatiotemporal (ze…
Impact of DREAMS interventions on attitudes towards gender norms among adolescent girls and young women
The DREAMS partnership aims to deliver a comprehensive package to reduce HIV incidence among adolescent girls and young women (AGYW), including through shifting gender norms. We evaluate DREAMS’ effect on attitudes towards gender norms in two Kenyan settings. AGYW aged 15–22 in Nairobi (n = 852) and Gem (n = 761) were randomly selected for cohort enrolment in 2017–18 and followed-up to 2019. We described the proportion of AGYW and their male peer…
Forecasting malaria dynamics based on causal relations between control interventions, climatic factors, and disease incidence in western Kenya
Background: Malaria remains one of the deadliest diseases worldwide, especially among young children in sub-Saharan Africa. Predictive models are necessary for effective planning and resource allocation; however, statistical models suffer from association pitfalls. In this study, we used empirical dynamic modelling (EDM) to investigate causal links between climatic factors and intervention coverage with malaria for short-term forecasting. Methods…
Widening the lens of population-based health research to climate change impacts and adaptation
Background: Climate change significantly impacts health in low-and middle-income countries (LMICs), exacerbating vulnerabilities. Comprehensive data for evidence-based research and decision-making is crucial but scarce. Health and Demographic Surveillance Sites (HDSSs) in Africa and Asia provide a robust infrastructure with longitudinal population cohort data, yet they lack climate-health specific data. Acquiring this information is essential for…
Adverse maternal, fetal, and newborn outcomes among pregnant women with Sars-CoV-2 infection
Acceptability of minimally invasive autopsy by community members and healthcare workers in Siaya and Kisumu counties, western Kenya, 2017–2018
Worldwide, nearly six million children under the age of five (
The long-term impact of HIV/Aids on socio-economic status
HIV/AIDS is known to have adverse effects on individual and family socio-economic status due to the loss of productive time and over-expenditure in treatment. However, empirical data on how HIV/AIDS affects households' socio-economic status are insufficient. We linked socio-economic data from a Health and Demographic Surveillance System (HDSS) that implements an HIV/AIDS Longitudinal bio-behavioural survey (LBBS) to understand the long-term impac…
Is maternal HIV infection a risk factor for delayed or missed infant measles vaccination in western Kenya
Measles is a highly infectious virus and one of the leading causes of childhood morbidity and mortality in areas with low immunization rates. Despite the introduction of the measles vaccine preventing about 20 million deaths between 2000 and 2016, there still is a low uptake of the vaccine, especially in low-income countries. Maternal HIV positive status is identified as one of the factors inhibiting the uptake of the measles vaccine in some sett…
We are called the et cetera”
Pro-poor health financing reforms improved access to care for the poor to some extent. However, to enhance the effectiveness of pro-poor reforms and to ensure that the poor in Kenya benefit fully from them, there is a need to address barriers to healthcare seeking across all access dimensions
HIV/Aids-related mortality in Africa and Asia
BACKGROUND: As the HIV/AIDS pandemic has evolved over recent decades, Africa has been the most affected region, even though a large proportion of HIV/AIDS deaths have not been documented at the individual level. Systematic application of verbal autopsy (VA) methods in defined populations provides an opportunity to assess the mortality burden of the pandemic from individual data. OBJECTIVE: To present standardised comparisons of HIV/AIDS-related m…
Childhood cause-specific mortality in rural Western Kenya
BACKGROUND: Assessing the progress in achieving the United Nation's Millennium Development Goals in terms of population health requires consistent and reliable information on cause-specific mortality, which is often rare in resource-constrained countries. Health and demographic surveillance systems (HDSS) have largely used medical personnel to review and assign likely causes of death based on the information gathered from standardized verbal auto…
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HIV/Aids-related mortality in Africa and Asia
BACKGROUND: As the HIV/AIDS pandemic has evolved over recent decades, Africa has been the most affected region, even though a large proportion of HIV/AIDS deaths have not been documented at the individual level. Systematic application of verbal autopsy (VA) methods in defined populations provides an opportunity to assess the mortality burden of the pandemic from individual data. OBJECTIVE: To present standardised comparisons of HIV/AIDS-related m…
Childhood cause-specific mortality in rural Western Kenya
BACKGROUND: Assessing the progress in achieving the United Nation's Millennium Development Goals in terms of population health requires consistent and reliable information on cause-specific mortality, which is often rare in resource-constrained countries. Health and demographic surveillance systems (HDSS) have largely used medical personnel to review and assign likely causes of death based on the information gathered from standardized verbal auto…
We are called the et cetera”
Pro-poor health financing reforms improved access to care for the poor to some extent. However, to enhance the effectiveness of pro-poor reforms and to ensure that the poor in Kenya benefit fully from them, there is a need to address barriers to healthcare seeking across all access dimensions
Is maternal HIV infection a risk factor for delayed or missed infant measles vaccination in western Kenya
Measles is a highly infectious virus and one of the leading causes of childhood morbidity and mortality in areas with low immunization rates. Despite the introduction of the measles vaccine preventing about 20 million deaths between 2000 and 2016, there still is a low uptake of the vaccine, especially in low-income countries. Maternal HIV positive status is identified as one of the factors inhibiting the uptake of the measles vaccine in some sett…
Widening the lens of population-based health research to climate change impacts and adaptation
Background: Climate change significantly impacts health in low-and middle-income countries (LMICs), exacerbating vulnerabilities. Comprehensive data for evidence-based research and decision-making is crucial but scarce. Health and Demographic Surveillance Sites (HDSSs) in Africa and Asia provide a robust infrastructure with longitudinal population cohort data, yet they lack climate-health specific data. Acquiring this information is essential for…
Adverse maternal, fetal, and newborn outcomes among pregnant women with Sars-CoV-2 infection
Acceptability of minimally invasive autopsy by community members and healthcare workers in Siaya and Kisumu counties, western Kenya, 2017–2018
Worldwide, nearly six million children under the age of five (
The long-term impact of HIV/Aids on socio-economic status
HIV/AIDS is known to have adverse effects on individual and family socio-economic status due to the loss of productive time and over-expenditure in treatment. However, empirical data on how HIV/AIDS affects households' socio-economic status are insufficient. We linked socio-economic data from a Health and Demographic Surveillance System (HDSS) that implements an HIV/AIDS Longitudinal bio-behavioural survey (LBBS) to understand the long-term impac…
The effects of climatic and non-climatic factors on malaria mortality at different spatial scales in western Kenya, 2008–2019
BACKGROUND: Malaria mortality is influenced by several factors including climatic and environmental factors, interventions, socioeconomic status (SES) and access to health systems. Here, we investigated the joint effects of climatic and non-climatic factors on under-five malaria mortality at different spatial scales using data from a Health and Demographic Surveillance System (HDSS) in western Kenya. METHODS: We fitted Bayesian spatiotemporal (ze…
Impact of DREAMS interventions on attitudes towards gender norms among adolescent girls and young women
The DREAMS partnership aims to deliver a comprehensive package to reduce HIV incidence among adolescent girls and young women (AGYW), including through shifting gender norms. We evaluate DREAMS’ effect on attitudes towards gender norms in two Kenyan settings. AGYW aged 15–22 in Nairobi (n = 852) and Gem (n = 761) were randomly selected for cohort enrolment in 2017–18 and followed-up to 2019. We described the proportion of AGYW and their male peer…
Forecasting malaria dynamics based on causal relations between control interventions, climatic factors, and disease incidence in western Kenya
Background: Malaria remains one of the deadliest diseases worldwide, especially among young children in sub-Saharan Africa. Predictive models are necessary for effective planning and resource allocation; however, statistical models suffer from association pitfalls. In this study, we used empirical dynamic modelling (EDM) to investigate causal links between climatic factors and intervention coverage with malaria for short-term forecasting. Methods…
A comparison of all-cause and HIV cause-specific mortality among children under 5 years of age before and during Covid-19 in Kenya, 2018–2022
The impact of the COVID-19 pandemic on pediatric mortality, including measures to ensure continuity of HIV care, is not well described in Kenya. We evaluated causes of death (COD) among decedents under 5 years of age both before and during the COVID-19 pandemic in Kenya. We analyzed Child Health and Mortality Prevention Surveillance (CHAMPS) data collected in February 2018–March 2022. We describe the proportional contribution of specific conditio…
Impact of a multilevel HIV prevention programme on adolescent girls and young women’s empowerment for risk reduction
Empowerment is key to person-centered HIV prevention. This study aims to evaluate the extent to which the Determined, Resilient, Empowered, AIDS-free, Mentored, Safe (DREAMS) Partnership promotes empowerment of adolescent girls and young women (AGYW) in Kenya. We conducted a mixed-methods study to examine DREAMS influence on empowerment precursors (resources, agency, institutional structures) and outcomes, guided by Kabeer’s framework for women’s…
Widowed and at risk
From a decade long follow-up, we show a disproportionately high and increasing prevalence of HIV among widowed women in Siaya, Kenya. Among both widowed and married women, there was an association between living with HIV and younger age, 10-year younger sexual partners and experiencing forced sex. Policies that prioritize widowed women could assist in the development of targeted interventions that address the unique challenges of this important s…
Pregnancy reporting and biases in under-five mortality in three African HDSSs
In the absence of complete civil registration and vital statistics, Health and Demographic Surveillance Systems (HDSSs) are important sources of population-based data throughout sub-Saharan Africa. However, HDSS data on the vital status of newborns are often unreliable due to omission of those who were born and died between two rounds of data collection and are therefore never enumerated. This study investigates whether pregnancy registration imp…
Medicine (12 works) · Environmental health (9 works) · Global Maternal and Child Health (7 works) · Demography (5 works) · Geography (5 works) · Psychological intervention (5 works) · Adolescent Sexual and Reproductive Health (4 works) · Disease (4 works) · Sociology (4 works) · Cause of death (3 works)