Global programs staff

Latin America:


Tanvi Ajmera - India Projects Manager

Prior to Health Care Without Harm, Tanvi worked at the US Department of Health and Human Services (HHS) where she managed national programs focused on ensuring behavioral health treatment and access for children and youth. Additionally, Tanvi has contributed to book chapters on diversity and inclusion, developed partnerships with faith communities and caregivers to bridge gaps in treatment, and managed international projects designed to create networks and foster knowledge exchange around behavioral health on a global scale.

Tanvi’s passion for community health began with her work in India — focusing on behavioral health education and service delivery across psychiatric hospitals, clinics, and nonprofits.

While working on a variety of challenges in the health sector (both in the US and India), including the effects of environmental health on community mental and physical health, Tanvi realized the need for broader sector engagement through more awareness, community involvement and policy change across systems. Through Health Care Without Harm, she hopes to address those challenges with a focus on social determinants of health and well-being.

Tanvi graduated with a Master’s in Clinical Psychology from S.N.D.T. University in Mumbai, India and has a B.S. in Psychology from the University of Warwick in England.

Ana Belluscio - Global Communications Manager

Ana is Health Care Without Harm's Global Communication Manager, where she is responsible for developing and implementing a communications strategy as well as managing the communications of projects and programs for Health Care Without Harm Global. 

Based in Buenos Aires, Argentina, Ana is has over 12 years of experience in science journalism and communication, and has managed science communications for Argentina's National Scientific and Technical Research Council.

Mariano De Donatis - International Managing Director

With over twelve years of experience working with civil society networks and coalitions to influence change at the national and global level, Mariano brings a tremendous amount of experience to help build and strengthen collaboration, management and governance for Health Care Without Harm.

Prior to joining Health Care Without Harm, Mariano worked as Oxfam´s Global Programme Manager, leading its advocacy work in BRICSAMIT countries - Brazil, Russia, India, Indonesia, China, South Africa, Mexico and Turkey. He led multi-issues campaigns, managed a flagship program to empower civil society networks and supported the Oxfam confederation's development in the Global South. 

Josh Karliner – International Director of Program and Strategy

Based out of San Francisco, California, Josh Karliner has coordinated Health Care Without Harm’s global work since 2005. In this capacity, he has led the creation and development of Health Care Without Harm’s Global Green and Healthy Hospitals Network. He also led Health Care Without Harm’s global mercury campaign, which, in collaboration with the World Health Organization, helped win the global phase-out of mercury-based medical devices through the Minamata Convention. Today, among other efforts, he is facilitating Health Care Without Harm’s worldwide efforts on health and climate. 

He has more than 30 years of experience working on international environmental and human rights issues. He is author of two books and a wide variety of academic and popular publications on global environmental and health policy, including the recent World Bank report on “Climate Smart Health Care.” In the past, Karliner has taught at the University of San Francisco and worked with and/or founded several organizations. 


Shweta Narayan - International Climate and Health Campaigner

Shweta Narayan is an India-based environmental health researcher and has over two decades of campaigning and advocacy experience in environmental justice issues in India. Her work focuses on providing legal, media and scientific research support to the residents of pollution affected communities and workers exposed to toxic chemicals.

Since 2014, she has been coordinating the Healthy Energy Initiative (HEI) program in India. As part of the program, she has worked with several sub-national governments and health professionals in developing climate and environmental health policies. She is a trained Social Worker with specialisation in Criminology and Correctional Administration from Tata Institute of Social Sciences, India.

Antonella Risso - International Climate Technical and Research Manager

Antonella leads Health Care Without Harm’s work to support hospitals and health systems around the world in measuring, tracking and reducing their climate footprint. She will also support health care initiatives for climate resilience and leadership.

For the past eight years, Antonella served as Technical Project Coordinator for Health Care Without Harm in Latin America, helping build the organization’s Global Green and Healthy Hospitals Network into a vibrant region-wide constellation of hospitals and health systems, while providing training, assistance and developing tracking and reporting tools for its members. She has also worked on sustainability issues with Argentina’s Ministry of Health.

Sonia Roschnik - International Climate Policy Director

Sonia has worked in health and social care internationally for 30 years as a clinician, in senior hospital management, and in sustainability. As International Climate Policy Director, she oversees the work to support health systems around the world, including national and sub-national governments as they move to reduce their climate footprint toward net zero and become resilient leaders in addressing the climate crisis. Prior to joining Health Care Without Harm, Sonia served as the Director of the Sustainable Development Unit (SDU) of England’s National Health Service (NHS). During her tenure leading the SDU she launched the Greener NHS program, including a commitment to net zero climate emissions, positioning the NHS as the first national health system in the world to do so. Sonia was a board member of Health Care Without Harm Europe May/June 2018 to April 2020.

She holds a Masters degree in Systems Thinking and is a member of the Faculty of Public Health in the UK. She is committed to the transformations needed for a sustainable and healthy planet for all.

Nick Thorp - Network Director, Global Green and Healthy Hospitals

Nick Thorp joined Health Care Without Harm in April of 2013 and serves as the Network Director for Global Green and Healthy Hospitals (GGHH). He has over 10 years of experience working with a variety of NGOs conducting toxicological research and developing innovative and interactive tools to advance education and public engagement around issues related to community and environmental health.

Nick holds a dual degree from the University of Oregon in International Environmental Studies and French. He is based in Oregon in the United States.

Ruth Stringer – Science and Policy Coordinator

Ruth Stringer is the international science and policy coordinator for Health Care Without Harm. She has been working with Health Care Without Harm for over ten years, coordinating work on waste, but also providing expertise on chemicals, pharmaceuticals and procurement. She is a member of the International Solid Waste Association healthcare waste working group, a technical advisor to the Africa Healthcare Waste Management project that Health Care Without Harm is leading with UNDP and WHO and advises on waste management policies internationally.

She maintains the organization’s database of sustainable technologies and promotes sustainable technologies for low and medium income countries. This includes supporting partners in Africa and Asia to implement waste autoclaving and develop biodigestion as an option for materials such as food and pathological wastes that can be hard to manage in places with limited waste disposal infrastructure.  

Jennifer Wang - Associate Director, International Climate Program

Jennifer Wang has been with Health Care Without Harm since 2014 working to mobilize the health sector to act on climate. Currently as Associate Director of the International Climate Program, Jennifer is responsible for managing an international team to implement Health Care Without Harm’s global climate strategy, which aims to align the health care sector with the ambition of the Paris Agreement while meeting global health goals.

Jennifer also oversees Health Care Without Harm’s diverse initiatives in India and leads the work on healthy energy and air pollution. Jennifer has over 15 years of experience in environmental health and sustainability, working at the intersection of research, policy, community engagement, and communication. Jennifer holds a M.S. in Global Health and Environment from University of California, Berkeley, and a B.S. in Chemistry from Rice University.

Susan Wilburn - International Sustainability Director

Susan WilburnSusan is an occupational & environmental health specialist (fields of study: nursing, public health, epidemiology). Susan leads Health Care Without Harm’s work in collaboration with the UNDP, WHO and UN Environment on Sustainable Procurement, health care waste management and mercury elimination.

Prior to joining Health Care Without Harm in 2014, she worked at the Department of Public Health, Environmental and Social Determinants of Health at World Health Organization headquarters in Geneva for eight years, where she coordinated the "greening hospitals" initiative, as well as the Protecting Health Workers - Preventing Needlestick Injuries project and led the development of the WHO-ILO global framework for national occupational health programs for health workers.  

Mariano Zamorano – Membership and Program Assistant, Global Green and Healthy Hospitals

Mariano lives in Buenos Aires, and after graduating in Journalism and Communications, he started working at the Argentine Ministry of Health, where he collaborated in the development of training courses on waste management in health facilities, as well as in the promotion of sustainable public procurement. In his free time, Mariano loves reading (novels and non-fiction books) and playing football with his friends.

In his role in Health Care Without Harm, Mariano works as a Membership and Program Assistant consultant, managing network memberships for Latin America and Global accounts, and supporting global communications.

Latin America

Carolina Gil Posse - Associate Director of Programs and Communications for Latin America

Carolina leads the communications strategy for Latin America and produces all content to support it. She coordinates the Global Green and Healthy Hospitals network initiatives in the region and the training program on sustainability, climate change and health. She also coordinates the team responsible for delivery of the Health Care Without Harm program portfolio in Latin America. She has worked for Health Care Without Harm since 2012, based in Buenos Aires, Argentina.

Carolina is a communications and journalism professional, with 18 years of experience in media and more than 10 years in the nonprofit sector. She has a degree in Journalism and another in Audiovisual Arts Education. She also holds a Master's in Journalism with a thesis on climate change communication and media coverage from a health perspective in Latin America. She is a PhD student in Social Sciences at the University of Buenos Aires.

Andrea Hurtado Epstein - Climate Program Manager for Latin America

Andrea has over eight years of experience in climate, environment, and sustainable development policy. Before joining Health Care Without Harm, she served as Coordinator for Sustainable Development at the Mexican Foreign Ministry, overseeing Mexico’s positions in multilateral environmental agendas, including as a member of Mexico’s delegation to the United Nations Framework Convention on Climate Change. 

Prior to this position, from 2016 to the end of 2018, she worked for the German Society for International Cooperation (GIZ) in a project advising the Directorate General for the 2030 Agenda at the Mexican Presidential Office. From 2013 to 2016, she was Director for International Development Fora at the Mexican Agency for International Development Cooperation. Andrea holds a BA in International Relations from the National Autonomous University of Mexico (UNAM), and a Masters in Environmental Policy from the University of Cambridge.

 Claudia Paz Giraldo - Technical projects facilitator for Latin America

Claudia provides technical assistance to the Global Green and Healthy Hospitals network, and leads the implementation of the annual call of Menos huella, más salud (Less footprint, more health) awards. She also collaborates to strengthen the impact of the SHiPP project in the region.

Based in Cali, Colombia, she has a degree in environment and natural resources management. She has managed hazardous and non-hazardous waste, clean energy, water saving and carbon footprint programs, among others. In 2016, she joined the Secretary of Health in Cali, where she created the Green Hospital Program for a Healthy Cali for private and public healthcare institutions.

Jaquelina Tapia - Technical Manager of Programs for Latin America

Jaquelina leads the technical aspects related to Health Care Without Harms's programmatic portfolio in Latin America, managing the implementation of specific programs and providing technical guidance to the Global Green and Healthy Hospitals (GGHH) regional members.

Jaquelina also coordinates the regional implementation of the Sustainable Health in Procurement Project (SHiPP) and the Menos huella, más salud program, to support GGHH members in reducing their environmental and climate footprint.

Jaquelina is an environmental engineer from the Universidad Nacional del Litoral (Argentina). She has completed postgraduate studies on sustainable development and climate change, and is a specialist in Occupational Hygiene and Safety (Faculty of Engineering, Universidad de Buenos Aires).