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We are volunteer scientists and healthcare professionals from around the world, working to end this pandemic by contributing our time to address concerns and public health misinformation.

Our #TeamHalo videos bring you accurate, up-to-date facts on the safety & effectiveness of the Covid-19 vaccines and other public health issues.

In response to the COVID-19 pandemic, Team Halo was established as part of the United Nations Verified initiative in partnership with Purpose and the Vaccine Confidence Project at the University of London’s School of Hygiene and Tropical Medicine. Support is provided by Luminate, IKEA Foundation, Rockefeller Foundation and Capgemini.

Experts représentés

Ce sont les nombreux visages, les voix diverses et les esprits brillants de l'équipe Halo.


Dr Natalia Pasternak

Natalia Pasternak is a microbiologist, with a PhD and post-doctorate in Microbiology, in the field of Bacterial Genetics at the University of São Paulo, Brazil. She is the former director in Brazil of the international festival of scientific communication “Pint of Science” (UK), columnist for the Brazilian national newspaper “O Globo”, for The Skeptic magazine… continue reading.


Dr Nighat Arif

Dr Nighat Arif is a NHS General Practitioner (GP) who has been working on the Covid-19 frontline caring for patients and has contracted Covid-19 herself. Now Dr Nighat’s surgery is administering Covid-19 vaccines.  Dr Nighat is a family GP specialising in women’s health and family planning.  She is based in Buckinghamshire and is able to… continue reading.


Dr Samir Gupta

Dr Samir Gupta is a Respirologist, Clinician-Scientist and Associate Professor at the University of Toronto. He completed his medical training at McGill University before specializing in Respirology at the University of Toronto. He has a Master’s degree in Clinical Epidemiology and a fellowship in Knowledge Translation Research. Samir has always had a specific interest in… continue reading.


Dr Kiran Morjaria

Le Dr Kiran Morjaria est un médecin junior et comédien basé à Manchester. Il travaille en première ligne pour admettre et traiter les patients atteints de Covid-19. Pendant son temps libre, il est bénévole dans un centre de vaccination Covid-19 en tant que vaccinateur. Kiran a été diplômé de la faculté de médecine de Leeds en 2017, où il a obtenu la bourse SPARK pour... continuer à lire.



Suivez les guides #TeamHalo pour des vidéos scientifiques et partageables sur les vaccins COVID-19.


Karnyart K Samnuan


Elisa Ramos Sevillano


Prof. Akiko Iwasaki


Dr. Krutika Kuppalli


Jason Kindrachuk


Dr. Angela Rasmussen


Interested in learning more?

If you’re a scientist, healthcare professional, or potential partner who would like to get involved, please get in touch.