Publications

Publications

Journal articles, reports, and analysis from the Spark Street team.

2026
Data and AI

Artificial intelligence for research capacity strengthening: Two reviews and a pathway to shift power in global health

PLOS Digital Health 2026
Brian Wahl, Tiffany Nassiri-Ansari, Daniel D. Redpath, Pascale Allotey, Nina Schwalbe

Global health research has long been shaped by inequalities rooted in colonial legacies, with researchers in wealthier countries generally leading the setting of research priorities. This paper examines whether AI tools...

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2025
Immunization and Maternal Health, Mental and Adolescent Health

Global Health Equity Considerations of Political Decisions: Trump, The US, and Immunization

Georgetown University 2025
Juan Pablo Gutiérrez, Brian Wahl, Susanna Lehtimaki, Nina Schwalbe

The paper examines how political choices on global health funding affect the four key dimensions of vaccination and immunization in LMICs: access, affordability, availability, and acceptability. It shows how reductions...

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2025
Pandemic Treaty and COVID 19

Adoption of pandemic treaty is historic: Compliance and accountability must now follow

PLOS Global Public Health 2025
Taran K Deol, Elliot Hannon, Susanna Lehtimaki, Matthew M Kavanagh, Nina Schwalbe

The Pandemic Treaty adopted at the 78th World Health Assembly (WHA78) is a landmark achievement in global health. Adoption is just a first step. As negotiators continue to work on Pathogen Access and Benefits Sharing,...

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2025
Pandemic Treaty and COVID 19

The pandemic treaty: A forensic review of process and pitfalls

Global Public Health 2025
Nina Schwalbe, Susanna Lehtimaki, Elliot Hannon

This article examines efforts to develop a pandemic treaty through World Health Organization member state agreement from 2021 to 2025, focusing on challenges during the process. The COVID-19 pandemic showed the critical...

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2025
Pandemic Treaty and COVID 19

Pandemic treaty is a win for multilateralism and global health

BMJ Opinion 2025
Nina Schwalbe

The World Health Organization's new Pandemic Agreement marks a historic step toward global health security and equity. Reached after three years of negotiations, the Treaty outlines commitments to strengthen health...

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2025
Pandemic Treaty and COVID 19

The lessons New York still has not learned from the Covid vaccine rollout

STAT News 2025
Nina Schwalbe

New York's early COVID-19 vaccine rollout failed its most vulnerable residents. Drawing on firsthand experience and data, this article reports how older adults in low-income neighborhoods were left behind. New York's...

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2025
Pandemic Treaty and COVID 19

Why we need a pandemic treaty now

The Telegraph 2025
Nina Schwalbe

With just one week of formal negotiations left, the world may be nearing its last chance to secure a global pandemic treaty that strengthens preparedness and response. Despite legal assurances that national sovereignty...

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2025
Immunization and Maternal Health

Achieving gender justice for global health equity: the Lancet Commission on gender and global health

The Lancet 2025
Sarah Hawkes, Elhadj As Sy, Gary Barker, Frances Elaine Baum, Kent Buse, and Nina Schwalbe, among others

Achieving gender justice in global health has the potential to improve health outcomes, reduce inequities, and transform workplaces and governance. Yet gender has become a polarizing concept, and efforts to advance...

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2025
Immunization and Maternal Health

An 'impact hub' approach to transforming global maternal health outcomes by 2030

Brookings Institution 2025
Mary-Ann Etiebet, Anne-Marie Slaughter, Lia Tadesse Gebredhin, Gordan LaForge, Alaa Murabit, Nina Schwalbe

Preventing maternal mortality remains a persistent global challenge. Eliminating preventable deaths requires more than isolated success stories, it demands a coordinated, systemic approach rooted in equity, local...

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2025
Pandemic Treaty and COVID 19

Zero-Draft Framework for Tracking Implementation of the Pandemic Agreement

Spark Street Advisors report
Spark Street Advisors

The Pandemic Agreement directs the Conference of Parties (COP) to create a mechanism to facilitate and strengthen implementation, including by monitoring key commitments and progress. This zero-draft framework is...

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2025
Immunization and Maternal Health, Mental and Adolescent Health

HPV Vaccination in Out-of-school Context

Spark Street Advisors global review, assessment tool, and Ethiopia report
Spark Street Advisors

HPV vaccination programs worldwide have primarily deployed school-based delivery strategies, with very little effort to reach girls who are temporarily or permanently out of school or beyond school age. This global...

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2025
Immunization and Maternal Health, Mental and Adolescent Health

HPV Vaccination in Out-of-school Context: Assessment Tool

Spark Street Advisors assessment tool
Spark Street Advisors

Companion tool to the global review, developed with the Bill & Melinda Gates Foundation, Pathfinder, Acasus, and Social Impact — a standardized approach to identify entry points and partners for reaching out-of-school girls with HPV vaccinations...

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2024
Other

Mpox: Neglect has led to a more dangerous virus now spreading across borders

PLOS Global Public Health 2024
Christine McNab, Els Torreele, Ayoade Alakija, and Nina Schwalbe, among others

The ongoing mpox outbreaks in Africa, driven by various clades including a newly identified Ib variant, are a severe concern. Despite mpox being endemic in several African countries for years, international attention...

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2024
Pandemic Treaty and COVID 19

The pandemic agreement: Achieving an African win for health security inequity

Journal of Public Health in Africa 2024
Nicaise Ndembi, Nebiyu Dereje, Fifa A. Rahman, and Nina Schwalbe, among others

The COVID-19 pandemic exposed the frailty and disparities of global health systems, especially in Africa. Vaccine nationalism and lack of inclusivity characterized early responses, raising concerns about global health...

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2024
Data and AI

Beyond "business as usual": Lessons from FIFA for fair benefit-sharing in global health

Health Affairs Scholar 2024
Brian Wahl, Gabriel Butin, Spring Gombe, Nina Schwalbe

Researchers and agencies from low- and middle-income countries often contribute significantly to public health data but lack adequate compensation. Incentivizing data sharing is crucial for effective pandemic response,...

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2024
Primary Care, Financing and Access

From lemming to leader: Moving beyond Gross Domestic Product (GDP) to bring health financing assistance into the 21st century

PLOS Global Public Health 2024
Tiffany Nassiri-Ansari, Nina Schwalbe, Susanna Lehtimaki

Nearly 90 years after GDP was introduced to measure economic growth, there are increasing calls to stop using it and GNI for broader purposes, such as determining eligibility for development assistance. These measures...

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2024
Pandemic Treaty and COVID 19

Assessing New York City's COVID-19 Vaccine Rollout Strategy: A Case for Risk-Informed Distribution

Journal of Urban Health 2024
Nina Schwalbe, Marta C. Nunes, Clare Cutland, Brian Wahl, Daniel Reidpath

This study reviews the impact of early COVID-19 vaccine eligibility policies on coverage and outcomes in New York City. Using data from the Census Bureau and New York City Health, the authors assessed vaccination...

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2024
Pandemic Treaty and COVID 19

Governance provisions in the WHO Pandemic Agreement draft

Lancet 2024
Nina Schwalbe, Elliot Hannon, Lynda Gilby, Susanna Lehtimaki

The WHO Pandemic Agreement draft lacks sufficient accountability measures. While it introduces a Conference of the Parties (COP) for governance, crucial details such as review scope and consequences for non-compliance...

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2024
Pandemic Treaty and COVID 19

Shaping Global Health Law through United Nations Governance: The UN High-Level Meeting on Pandemic PPR

Global Health Law 2024
Benjamin Mason Meier, Alexandra Finch, Nina Schwalbe

The UN General Assembly High-Level Meeting on pandemic prevention, preparedness, and response failed to garner significant high-level commitment and momentum for global health emergency governance. This article explores...

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2024
Pandemic Treaty and COVID 19

Getting in Formation: WHO Constitutional Heads of Power and the Pandemic Agreement

Opinio Juris 2024
Alexandra L Phelan, Nina Schwalbe

WHO Member States are nearing the end of negotiations for a proposed Pandemic Agreement, considering whether to adopt it under Article 19 or Article 21 of the WHO Constitution. While this may seem a simple 'opt in' or...

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2024
Pandemic Treaty and COVID 19

The new pandemic treaty: Are we in safer hands? Probably not

BMJ Opinion 2024
Nina Schwalbe, Elliot Hannon, Susanna Lehtimaki

The latest draft of the pandemic treaty falls short of expectations with governance revisions that lack accountability measures, leaving oversight to Member States through a World Health Assembly committee. Without...

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2024
Pandemic Treaty and COVID 19

WHO Member States are negotiating a Pandemic Treaty. But will countries follow the new rules?

Bulletin of the Atomic Scientists 2024
Elliot Hannon, Nina Schwalbe, Susanna Lehtimaki

An independent monitoring mechanism is essential for the Pandemic Accord. Negotiators must remember to keep Member States accountable. It's feasible, viable, achievable and vital for preparing for the inevitable next...

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2024
Pandemic Treaty and COVID 19

Where there is a will, there is a way: independent assessment of member state compliance with the pandemic agreement

Lancet 2024
Susanna Lehtimaki, Elliot Hannon, Layth Hanbali, Daniela-Filipa Soltan, Kimberley Peek, Tiffany Nassiri-Ansari, Nina Schwalbe

On Oct 16, the world got its first glimpse of the complete draft negotiating text of the proposed pandemic agreement. In analysis of the preliminary draft, the authors found gaps in crucial areas such as health system...

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2024
Pandemic Treaty and COVID 19

Independent Monitoring for the Pandemic Agreement – A Proposal for Action

Spark Street Advisors final report and policy brief
Spark Street Advisors

Based on evidence from monitoring other treaties, expert interviews, and analysis of various forms of independence, this report outlines the draft zero Terms of Reference for a Pandemic Agreement Independent Monitoring...

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2024
Other

Learning Organizations: Theory and Practice

Spark Street Advisors report
Spark Street Advisors

This report explores organizational learning, summarizing theoretical and practical aspects. It examines key concepts, models, and enablers of learning that help organizations adapt and develop, and, by analyzing six...

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2023
Pandemic Treaty and COVID 19

Independent monitoring and the new pandemic agreement

BMJ Global Health 2023
Layth Hanbali, Elliot Hannon, Susanna Lehtimaki, Christine McNab, Nina Schwalbe

Negotiations are ongoing at the WHO for a binding pandemic prevention agreement, but past agreements haven't guaranteed effective implementation. While enforcement mechanisms are crucial, they're inconsistently applied...

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2023
Primary Care, Financing and Access

Primary health care: a cornerstone of pandemic prevention, preparedness, response, and recovery

Lancet 2023
Arush Lal, Nina Schwalbe

The COVID-19 crisis highlighted the devastating consequences of neglecting primary health care before, during, and after a pandemic. This regression created a vicious cycle of vulnerability, especially for groups at high...

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2023
Pandemic Treaty and COVID 19

We cannot give up on the global pandemic treaty

Financial Times 2023
Nina Schwalbe

Nearly two years after countries agreed to develop a new pandemic treaty, the prospect of achieving a bold new global agreement to prepare and respond to future disease threats is slipping away. The UN General Assembly's...

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2023
Immunization and Maternal Health

Bold moves for vaccine manufacturing equity

Lancet 2023
Nina Schwalbe, Ole Kristian Aars

The COVID-19 pandemic resulted in an unprecedented global crisis, and although there was unprecedented speed in developing new vaccines, the benefits from licensing effective vaccines in record time were not felt by all....

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2023
Pandemic Treaty and COVID 19

Independent monitoring for the pandemic accord: a non-negotiable provision

Lancet 2023
Layth Hanbali, Susanna Lehtimaki, Elliot Hannon, Christine McNab, Nina Schwalbe

The COVID-19 pandemic exposed the need for a coordinated global response to pandemics. In response, the Intergovernmental Negotiating Body for a pandemic accord discussed a zero draft in February 2023. Based on a...

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2023
Pandemic Treaty and COVID 19

Independent Review and Investigation Mechanisms to Prevent Future Pandemics: A Proposed Way Forward

Spark Street Advisors analysis and policy brief
Spark Street Advisors

To inform the design of an accountability system for a pandemic treaty, this report explores institutional mechanisms with a mandate to review state compliance with key international agreements and conduct independent...

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2022
Pandemic Treaty and COVID 19

We need a pandemic treaty — but it must hold nations accountable

Washington Post 2022
Nina Schwalbe, Elliot Hannon

The cycle of state denial and downplaying followed by disastrous consequences is a familiar pattern in public health crises, as demonstrated during the COVID-19 pandemic. To prevent similar outcomes in the future, it is...

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2022
Immunization and Maternal Health

We need a new global compact on vaccines

Financial Times 2022
Nina Schwalbe

Amid the emergence of monkeypox cases in the US and Europe, efforts are underway to vaccinate populations using the smallpox vaccine, which offers some cross-protection but is in limited supply. The global vaccine...

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2022
Immunization and Maternal Health

Strengthening Gavi is a way forward for global vaccine equity

STAT News 2022
Nina Schwalbe

The upcoming Biden administration COVID-19 summit shone a spotlight on global vaccine equity failure, where only 16% of people in low-income countries were vaccinated, compared to 80% in high-income nations. Lessons from...

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2022
Pandemic Treaty and COVID 19

Why we still need a pandemic treaty

Lancet 2022
Elliot Hannon, Layth Hanbali, Susanna Lehtimaki, Nina Schwalbe

The 2022 World Health Assembly saw Member States discussing amendments to the International Health Regulations. Despite meeting in person for the first time since COVID-19, little progress was made on solutions for...

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2022
Immunization and Maternal Health

Use of financial incentives to increase adult vaccination coverage: A narrative review of lessons learned from COVID-19

Vaccine X 2022
Nina Schwalbe, Layth Hanbali, Marta C Nunes, Susanna Lehtimaki

To encourage COVID-19 vaccination, governments have offered a wide range of incentives ranging from cash to cows. This narrative review sought to understand the evidence base informing these programs and the extent to...

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2022
Pandemic Treaty and COVID 19

Independent Monitoring Mechanism for the Pandemic Accord - Accountability for a Safer World

Spark Street Advisors, November 2022
Spark Street Advisors

This analysis features a proposal for independent monitoring of state compliance with an eventual pandemic accord, based on analysis of monitoring approaches to relevant international treaties, literature reviews, and...

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2021
Immunization and Maternal Health

Increasing efficiency in vaccine production: A primer for change

Vaccine X 2021
Ole Kristian Aars, Michael Clark, Nina Schwalbe

The COVID-19 pandemic highlighted the importance of vaccines as public health and pandemic preparedness tools and amplified issues ranging from equitable distribution to reliable supply. Delays in time from the first...

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2021
Mental and Adolescent Health

Evidence on Digital Mental Health Interventions for Adolescents and Young People: Systematic Overview

JMIR Mental Health 2021
Susanna Lehtimaki, Jana Martic, Brian Wahl, Katherine Foster, Nina Schwalbe

Although digital interventions for mental health can be effective for both supplementing and supplanting traditional treatment, only a small proportion of existing digital platforms are evidence based. Their...

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2021
Pandemic Treaty and COVID 19

The World Should Treat Pandemics Like It Treats Chemical Weapons

Foreign Policy 2021
Nina Schwalbe, Susanna Lehtimaki

While the world was still battling COVID-19, it was time to start preparing for the next pandemic, above all, how to prevent it. This piece argues for taking pandemic containment as seriously as other dangers of mass...

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2020
Data and AI

Data Sharing and Global Public Health: Defining What We Mean by Data

Frontiers in Digital Health 2020
Nina Schwalbe, Brian Wahl, Jingyi Song, Susanna Lehtimaki

As the volume of public health data expands and data become more interconnected, a broad range of data is being used to support research and inform global health policies and practice. This paper expands on an existing...

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2020
Data and AI

Artificial intelligence (AI) and the future of global health

Lancet 2020
Nina Schwalbe, Brian Wahl

Although AI-driven health interventions can help address several existing and emerging health challenges, many issues are not sufficiently described in the literature and warrant further exploration. These relate to the...

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2020
Primary Care, Financing and Access

Accelerating access to medicines in a changing world

Bulletin of the World Health Organization 2020
Hannah Ketler, Susanna Lehtimaki, Nina Schwalbe

Many access tools were designed and implemented by donors, with relatively little engagement from patients or interaction with the systems into which the product is or will be introduced.

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2020
Pandemic Treaty and COVID 19

COVID-19: Rethinking risk

Lancet 2020
Nina Schwalbe, Susanna Lehtimaki, Juan Pablo Gutiérrez

Although older age and underlying conditions are visible markers of increased risk, people subject to structural inequities are more likely to develop underlying conditions and receive poor quality health care for...

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2020
Pandemic Treaty and COVID 19

Why are we closing schools?

The Atlantic 2020
Nina Schwalbe

Keeping kids out of the classroom will make recovering from the pandemic harder in the long term, while not keeping us any safer in the near term. Reopening schools doesn't appear to meaningfully increase the level of...

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2019
Immunization and Maternal Health

Apples and oranges? Can second-generation vaccines become as low cost as generic medicines?

Vaccine 2019
Aurelia Nguyen, Nina Schwalbe

A step change in cost will require fundamental shifts in vaccine technologies and how they are developed, regulated and even manufactured.

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2019
Primary Care, Financing and Access

Expanding the use of community health workers in urban settings

Health Policy and Planning 2019
Brian Wahl, Susanna Lehtimaki, Stefan Germann, Nina Schwalbe

As global and national policymakers deliberate approaches to achieving the SDGs, including universal health coverage, the delivery of community-based interventions involving community health workers in urban settings...

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2018
Primary Care, Financing and Access

Global Public Goods for Health (GPGs)

Devex 2018
Gavin Yamey, Jessica Kraus, Sara Fewer, Nina Schwalbe

In a new policy paper, the authors examine the potential support for global public goods for health from four organizations that provide the most development assistance for health: Gavi, the Global Fund, World Bank, and...

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2018
Data and AI

Artificial intelligence (AI) and global health

BMJ Global Health 2018
Brian Wahl, Aline Cossy-Gantner, Stefan Germann, Nina Schwalbe

As resource-poor settings become more connected and the data they produce of higher quality, the ability of AI to address health challenges will likely expand.

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2018
Immunization and Maternal Health

Time's up for journal gender bias

Lancet 2018
Nina Schwalbe, Jennifer Fearon

From January 2013 through February 2018, The Lancet published the reports of 39 Commissions. Only 34% of all named commissioners have been women.

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2017
Immunization and Maternal Health

Maternal and child health and non-communicable diseases

BMJ Global Health 2017
Luisa Brumana, Alvaro Arroyo, Nina Schwalbe, Susanna Lehtimaki, David Hipgrave

Following a life-course approach, maternal and child health interventions, before delivery and during childhood and adolescence, can prevent non-communicable diseases.

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2017
Immunization and Maternal Health

Generation Men

Lancet 2017
Nina Schwalbe

The Fearless Girl statue that faces down Wall Street's charging bull grabbed international headlines and triggered a debate about the glass ceiling that continues to obstruct women.

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