John Humphrey

Biographic Data

ID5525568
NAMEJohn Humphrey
GIVEN NAMESJohn
FAMILY NAMEHumphrey
SIGNATUREHUMPHREY J
AFFILIATIONSIndiana University School of Medicine
ORCID0000-0003-3156-1065
VERIFIEDYes
TOTAL WORKS69
TOTAL CITATIONS1568
AUTHOR COUNT69
EDITOR COUNT0
FIRST PUBLICATION YEAR1964
LATEST PUBLICATION YEAR2026
H-INDEX11

  • Perspectives on enhancing peer support services for mothers living with HIV in Kenya

    Open AccessJames G Carlucci, Rosa Chemwey Ndiema et al.ARTICLEPLOS Global Public Health2026

    Mentor Mother (MM) services are an evidenced-based peer support strategy embedded within prevention of mother-to-child transmission of HIV (PMTCT) programs. The current MM strategy in Kenya provides monthly, facility-based, one-size-fits-all antiretroviral therapy adherence counselling and health education to women living with HIV (WLHIV) who are navigating PMTCT services. MMs receive a small monthly stipend as compensation for providing these se…

  • Determinants of HIV interruption in treatment in Murang’a County, Kenya

    Open AccessMoses Muriithi Njiru, Samson Ndege et al.ARTICLEAIDS Care2026

    Globally, approximately one-in-four people living with HIV (PLHIV) experiences interruption in treatment (IIT), risking viral rebound, transmission, morbidity, and mortality. Murang’a County reported 82% viral suppression coverage, below Kenya’s 94%. This study assessed IIT magnitude and determinants using sequential-explanatory mixed methods across nine high-volume facilities (Jan 2023–Jun 2024). PLHIV missing clinical appointments by >30 days w…

  • Human-centered design of an adapted differentiated service delivery model for pregnant and postpartum women living with HIV in Kenya

    John Humphrey, Bett Kipchumba et al.ARTICLEAIDS Care2025

    Differentiated service delivery (DSD) models for pregnant and postpartum women living with HIV (WLH) are lacking despite guidelines recommending DSD for this population. We used human-centered design (HCD) to develop a DSD model for pregnant and postpartum WLH at the Academic Model Providing Access to Healthcare (AMPATH) in Kenya. We conducted co-creation workshops with 11 postpartum women, 9 male partners and 9 providers from three AMPATH-affili…

  • General Strain Theory and Suicide Ideation in Adolescence

    Casey Cavanaugh, John Humphreys et al.ARTICLEDeviant Behavior2025References: 50

  • No One Needs to be Forced”

    Open AccessMehar Maju, Shukri A Hassan et al.ARTICLEAIDS and Behavior2024

  • Effects of the Covid-19 pandemic on late postpartum women living with HIV in Kenya

    Open AccessJohn Humphrey, Marsha Alera et al.ARTICLEPLOS Global Public Health2023

    Although an estimated 1.4 million women living with HIV (WHIV) are pregnant each year globally, data describing the effects of the COVID-19 pandemic on postpartum women in low- and middle-income countries (LMICs) are limited. To address this gap, we conducted phone surveys among 170 WHIV ≥18 years and 18–24 months postpartum enrolled in HIV care at the Academic Model Providing Access to Healthcare in western Kenya, and assessed the effects of the…

  • Retention in care and viral suppression in the PMTCT continuum at a large referral facility in western Kenya

    Open AccessJohn Humphrey, Julia Songok et al.ARTICLEAIDS and Behavior2022

    Medical records of pregnant and postpartum women living with HIV and their infants attending a large referral facility in Kenya from 2015 to 2019 were analyzed to identify characteristics associated with retention in care and viral suppression. Women were stratified based on the timing of HIV care enrollment: known HIV-positive (KHP; enrolled pre-pregnancy) and newly HIV-positive (NHP; enrolled during pregnancy). Associations with retention at 18…

  • A qualitative study of the barriers and enhancers to retention in care for pregnant and postpartum women living with HIV

    Open AccessJohn Humphrey, Danièle Maubon et al.ARTICLEPLOS Global Public Health2021

    Retention in care is a major challenge for pregnant and postpartum women living with HIV (PPHIV) in the prevention of mother-to-child HIV transmission (PMTCT) continuum. However, the factors influencing retention from the perspectives of women who have become lost to follow-up (LTFU) are not well described. We explored these factors within an enhanced sub-cohort of the East Africa International Epidemiology Databases to Evaluate AIDS Consortium. …

  • Theodore (“Ted”) Vern Buttrey, Jr. December 29, 1929 – January 9, 2018

    Open AccessWarren Metcalf, W E Metcalf et al.ARTICLEJournal of Roman Archaeology2018

    An abstract is not available for this content so a preview has been provided. As you have access to this content, a full PDF is available via the ‘Save PDF’ action button

  • Platforms, Innovation and Capability Development in the Chinese Domestic Market

    Open AccessJohn D Humphrey, John Humphrey et al.ARTICLEEuropean Journal of Development…2018Cited by: 6References: 4

  • Markets for Nutrition

    Open AccessJohn D Humphrey, John Humphrey et al.ARTICLEIDS Bulletin2015Cited by: 1References: 6

    Policymakers are increasingly seeking to use food systems to help reduce rates of chronic undernutrition and to use markets to deliver nutrient?rich foods to vulnerable populations. This article examines how this might be achieved, drawing lessons from three intervention types: ready?to?use therapeutic foods (RUTFs), mandatory fortification and voluntarily fortified products. We find that a common set of constraints tends to inhibit markets from …

  • Understanding the Complexities of Private Standards in Global Agri-Food Chains as They Impact Developing Countries

    Spencer Henson, John D Humphrey et al.ARTICLEThe Journal of Development Studies2010

    The increasing prevalence of private standards governing food safety, food quality and environmental and social impacts of agri-food systems has raised concerns about the effects on developing countries, as well as the governance of agri-food value chains more broadly. It is argued that current debates have been 'clouded' by a failure to recognise the diversity of private standards in terms of their institutional form, who develops and adopts the…

  • The Development of the Physicians' Peace Movements

    John D Humphrey, John HumphreyARTICLEMedicine Conflict & Survival2009

    A brief historical account is given of the development of medical ethics, and of the gradual assumption of medical responsibilities in relation to victims of war. The idea that the medical profession as a whole should be concerned with health problems throughout the world, other than those of their own nationals, is quite recent. Collaboration in this area began with the International Health Organization of the League of Nations, and was greatly …

  • Are Exporters in Africa Facing Reduced Availability of Trade Finance

    Open AccessJohn D Humphrey, John HumphreyARTICLEIDS Bulletin2009References: 2

    One of the widely-predicted consequences of the global financial crisis is a shortage of trade finance that will exacerbate declines in trade volumes. Many commentators and policymakers have predicted such a shortage, and the G20 London Summit committed to substantial increases in trade finance. Should development practitioners be concerned about whether decreasing availability of trade credit will undermine export performance in sub-Saharan Afri…

  • Global Governance and Developing Countries

    Open AccessJing Gu, John D Humphrey et al.ARTICLEWorld Development2007Cited by: 20References: 10

  • Forty Years of Development Research

    Open AccessJohn D Humphrey, John HumphreyARTICLEIDS Bulletin2007

  • Policy Implications of Trends in Agribusiness Value Chains

    Open AccessJohn D Humphrey, John HumphreyARTICLEEuropean Journal of Development…2006Cited by: 18References: 4

  • China and India as Emerging Global Governance Actors

    Open AccessJohn D Humphrey, John Humphrey et al.ARTICLEIDS Bulletin2006Cited by: 6References: 5

  • The governance of global value chains

    Gary Gereffi, John D Humphrey et al.ARTICLEReview of International Political…2005Cited by: 863References: 13

    This article builds a theoretical framework to help explain governance patterns in global value chains. It draws on three streams of literature – transaction costs economics, production networks, and technological capability and firm-level learning – to identify three variables that play a large role in determining how global value chains are governed and change. These are: (1) the complexity of transactions, (2) the ability to codify transaction…

  • E-commerce for Developing Countries

    Open AccessJohn D Humphrey, John Humphrey et al.ARTICLEIDS Bulletin2004References: 3

    Development agencies have emphasised the potential of business-to-business (B2B) e-commerce to reduce barriers to entry to global markets for small and medium-sized enterprises in developing countries. E-marketplaces would allow firms to buy and sell online, reaching customers across the world at low cost. A study of B2B e-marketplaces and the use of the internet by developing country firms shows a different picture. There is little evidence that…

  • The Clean Development Mechanism

    Open AccessJohn D Humphrey, John HumphreyARTICLEIDS Bulletin2004

  • Changing Governance Patterns in the Trade in Fresh Vegetables between Africa and the United Kingdom

    Open AccessC Dolan, John D Humphrey et al.ARTICLEEnvironment and Planning A…2004Cited by: 39References: 8

    Over the past twenty years the marketing of African fresh vegetables in the United Kingdom has become dominated by large retailers that have adopted competitive strategies based on quality, year-round supply, and product differentiation. This has led to a dramatic change in marketing channels, from wholesale markets to tightly knit supply chains. Global value chain analysis is used to explain why the various stages of production and marketing hav…

  • How does insertion in global value chains affect upgrading in industrial clusters

    John D Humphrey, John Humphrey et al.ARTICLERegional Studies2002Cited by: 395References: 6

    Humphrey J. and Schmitz H. (2002) How does insertion in global value chains affect upgrading in industrial clusters?, Reg. Studies 36, 1017–1027. What is the scope for local upgrading strategies where producers operate in global value chains? The literature on industrial clusters emphasizes the role of inter-firm co-operation and local institutions in enabling upgrading. The value chain literature focuses on the role of global buyers and chain go…

  • Governance in Global Value Chains

    Open AccessJohn D Humphrey, John Humphrey et al.ARTICLEIDS Bulletin2001Cited by: 38References: 7

    If trade liberalisation is to bring benefits to developing countries, then these countries must be

  • Introduction

    Open AccessGary Gereffi, John D Humphrey et al.ARTICLEIDS Bulletin2001Cited by: 57References: 7

    Globalisation has become a catchword for the international economy at the beginning of the twenty-first century. The increasing importance of export-oriented industrialisation has made integration into the global economy virtually synonymous with development for a number of nations. However, there is an acute awareness that the gains from globalisation are very unevenly distributed within as well as between societies. A growing body of work analy…