Dan Hogan
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View article: Monitoring the SDG immunization indicator: Approaches and challenges
Monitoring the SDG immunization indicator: Approaches and challenges Open
The operational definition of the Sustainable Development Goal (SDG) immunization indicator encompasses coverage with full courses of diphtheria-tetanus-pertussis (DPT3), pneumococcal (PCV3), measles (MCV2), and human papillomavirus (HPV) …
View article: Can unvaccinated children be reached through mobile phones? Analyses of national cross-sectional surveys from 70 countries
Can unvaccinated children be reached through mobile phones? Analyses of national cross-sectional surveys from 70 countries Open
The potential impact of mHealth interventions for reaching zero-dose children may be limited by mobile phone ownership among mothers and families, particularly among the poor, where we find the greatest number of unvaccinated children.
The Immunization Agenda 2030 Strategy to reach zero-dose children in low-income and middle-income countries: a scoping review Open
Introduction Intensified efforts are needed to achieve the Immunization Agenda 2030 (IA2030) target to halve the number of children not reached by routine vaccination (‘zero-dose’ (ZD) children) by 2030. This scoping review maps and synthe…
Estimating the historical impact of outbreak response immunisation programmes across 210 outbreaks in low and middle-income countries Open
Background Outbreaks of vaccine-preventable diseases frequently occur in low and middle-income countries (LMICs), requiring outbreak response immunisation (ORI) programmes for containment. To inform future investment decisions, this study …
View article: The impact COVID-19 pandemic on coverage and inequalities in childhood immunization in Peru
The impact COVID-19 pandemic on coverage and inequalities in childhood immunization in Peru Open
The COVID-19 pandemic temporarily disrupted Peru's childhood immunization efforts, particularly affecting poorer populations, but coverage rebounded to pre-pandemic levels by 2022. These findings contribute to the scant literature on the p…
View article: Trends in coverage following an equity-oriented strategy for introducing new vaccines, Peru, 2004–2022
Trends in coverage following an equity-oriented strategy for introducing new vaccines, Peru, 2004–2022 Open
The strategy increased coverage in the poorest districts initially and, as national coverage grew, regional disparities were eliminated. However, socioeconomic differences persisted, with wealthier children maintaining higher vaccination r…
Inequalities in ownership and availability of home-based vaccination records in 82 low- and middle-income countries Open
Introduction Home-based records (HBRs) are widely used for recording health information including child immunisations. We studied levels and inequalities in HBR ownership in low-income and middle-income countries (LMICs) using data from na…
Estimating the historical impact of outbreak response immunization programs across 210 outbreaks in LMICs Open
Background Outbreaks of vaccine-preventable diseases continue to occur in low- and middle-income countries (LMICs), requiring outbreak response immunization (ORI) programs for containment. To inform future investment decisions, this study …
A Framework for Assessing the Impact of Outbreak Response Immunization Programs Open
The impact of outbreak response immunization (ORI) can be estimated by comparing observed outcomes to modelled counterfactual scenarios without ORI, but the most appropriate metrics depend on stakeholder needs and data availability. This s…
View article: Lives saved with vaccination for 10 pathogens across 112 countries in a pre-covid-19 world
Lives saved with vaccination for 10 pathogens across 112 countries in a pre-covid-19 world Open
Background: Vaccination is one of the most effective public health interventions. We investigate the impact of vaccination activities for Haemophilus influenzae type b, hepatitis B, human papillomavirus, Japanese encephalitis, measles, Nei…
A zero-dose vulnerability index for equity assessment and spatial prioritization in low- and middle-income countries Open
Many low- and middle-income countries (LMICs) continue to experience substantial inequities in vaccination coverage despite recent efforts to reach missed communities and reduce zero-dose prevalence. Geographic inequities in vaccination co…
View article: Why Reaching Zero-Dose Children Holds the Key to Achieving the Sustainable Development Goals
Why Reaching Zero-Dose Children Holds the Key to Achieving the Sustainable Development Goals Open
Immunization has one of the highest coverage levels of any health intervention, yet there remain zero-dose children, defined as those who do not receive any routine immunizations. There were 18.2 million zero-dose children in 2021, and as …
Estimates of the number and distribution of zero-dose and under-immunised children across remote-rural, urban, and conflict-affected settings in low and middle-income countries Open
While there has been great success in increasing the coverage of new childhood vaccines globally, expanding routine immunization to reliably reach all children and communities has proven more challenging in many low- and middle-income coun…
Assessing the characteristics of un- and under-vaccinated children in low- and middle-income countries: A multi-level cross-sectional study Open
Achieving equity in vaccination coverage has been a critical priority within the global health community. Despite increased efforts recently, certain populations still have a high proportion of un- and under-vaccinated children in many low…
Assessing the impact of preventive mass vaccination campaigns on yellow fever outbreaks in Africa: A population-level self-controlled case series study Open
Background The Eliminate Yellow fever Epidemics (EYE) strategy was launched in 2017 in response to the resurgence of yellow fever in Africa and the Americas. The strategy relies on several vaccination activities, including preventive mass …
Assessing the impact of preventive mass vaccination campaigns on yellow fever outbreaks in Africa : a population-level self-controlled case-series study Open
Introduction The Eliminate Yellow fever Epidemics (EYE) strategy was launched in 2017 in response to the resurgence of yellow fever in Africa and the Americas. The strategy relies on several vaccination activities, including preventive mas…
Benefit-risk analysis of health benefits of routine childhood immunisation against the excess risk of SARS-CoV-2 infections during the COVID-19 pandemic in Africa Open
Summary Background National immunisation programmes globally are at risk of suspension due to the severe health system constraints and physical distancing measures in place to mitigate the ongoing COVID-19 pandemic. Our aim is to compare t…
View article: Global, regional, and national causes of under-5 mortality in 2000–15: an updated systematic analysis with implications for the Sustainable Development Goals
Global, regional, and national causes of under-5 mortality in 2000–15: an updated systematic analysis with implications for the Sustainable Development Goals Open
Bill & Melinda Gates Foundation, WHO.
View article: Stillbirths: rates, risk factors, and acceleration towards 2030
Stillbirths: rates, risk factors, and acceleration towards 2030 Open
An estimated 2.6 million third trimester stillbirths occurred in 2015 (uncertainty range 2.4-3.0 million). The number of stillbirths has reduced more slowly than has maternal mortality or mortality in children younger than 5 years, which w…
National, regional, and worldwide estimates of stillbirth rates in 2015, with trends from 2000: a systematic analysis Open
Data produced by the Every Newborn Action Plan (ENAP) study to estimate national stillbirth rates (SBRs) and numbers for 195 countries. SBR data was collated through a systematic review of national routine/registration systems, nationally …