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Follow these scientists working to get us safe and effective Covid vaccines. Ask them anything.

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Featured Guides

These volunteers are making short videos on TikTok and Instagram to explain their part in the vaccine effort.


Shamaila Anwar

Shamalia is currently project managing the National Institute of Health Research ‘COVID and Me’ programme to address inclusivity in vaccine research and reaching underserved communities.

Dr Shamaila Anwar is a senior manager at the National Institute for Health Research where she has worked for the last 6 years managing key initiatives in Cancer, Surgery and Oral and Dental Health Research.

Shamaila completed her PhD in epidemiology at the University of Bradford and has a background in the development and management of clinical trials across a number of different specialty areas.  


Dr Punam Krishan

Dr Punam Krishan is a Scottish NHS General Practitioner, Clinical lecturer, writer and media medic with a specialist interest in mental health, women and children’s health and lifestyle medicine. 

Punam is involved in the vaccination roll out at her practice and also being from a south asian background, she has been involved in educating her community around vaccine hesitancy as well as in the media.

Punam is a Glasgow girl with an Indian heart, a mum to two young children (one of whom was born in lockdown!). She is fluent in Hindi, Punjabi and Urdu. And also a keen runner and a qualified meditation teacher.


Dr Kiran Morjaria

Dr Kiran Morjaria is a junior doctor and comedian based in Manchester. He is working on the front line admitting and treating patients with Covid-19. In his spare time he volunteers at a Covid-19 vaccination hub as a vaccinator.

Kiran graduated from Leeds Medical School in 2017, where he was awarded the SPARK scholarship for enterprise, and is currently training to be a GP. He has performed comedy across the national circuit and continues to make medicine accessible and fun online.

Kiran’s big passion outside of medicine is comedy. He also enjoys staying active, he is a keen gym-goer, tennis player and vegetarian foodie.


Daniela Ferreira

Daniela Ferreira is a Professor of Vaccinology and the Head of the Department of Clinical Sciences at Liverpool School of Tropical Medicine, in the United Kingdom, one of the centers that verify the effectiveness of the Covid-19 vaccine developed by Oxford. She currently leads several clinical studies for the development of vaccines against pneumonia and, recently, against the new Coronavirus.

Daniela has a Bachelor in Biological Sciences (2005) and a PhD in Immunology and Biotechnology (2009),both from the University of São Paulo, Brazil. From 2001 to 2009, she worked on the development of new vaccines against pneumococcus (the bacterium responsible for causing diseases such as meningitis, bacterial pneumonia and otitis media) at the Butantan Institute, in São Paulo. 

During her PhD, she was awarded the Robert Austrian Research Award in Pneumococcal Vaccinology sponsored by the American pharmaceutical company Wyeth, to develop new mucosal vaccines. Daniela has published over 80 scientific articles on respiratory infections and vaccines and leads a £11M portfolio of clinical studies.


Dr Ruby Raphael

Dr Ruby Raphael is a Senior Doctorate of Medicine Resident at the Department of Clinical Pharmacology and Therapeutics, Nizam’s Institute of Medical Sciences, Hyderabad, India. She is a part of Nizam’s Institute of Medical Sciences vaccine trial team currently running phase 1, 2 & 3 clinical trials for development of COVID-19 vaccine. This study will contribute to the understanding of safety and efficacy of the vaccine.


Björn Meyer

Björn Meyer, originally from Germany, is a virologist working in the Viral Populations and Pathogenesis Unit at the Institut Pasteur in Paris, France. 

Since the Covid-19 pandemic began, his research has focused on SARS-CoV-2 infected cells and what happens between cellular and viral proteins. Björn uses these interactions as starting points to target events for antiviral strategies specifically. He is also part of a therapeutic task force that develops assays and drug-screens to test new therapeutics (small molecules, biologics, antibodies, etc.) from academic and industrial partners. 
Outside of work, Björn makes the most of living in France — enjoying food and wine with his partner Kerri. 


Purvi Parikh

Purvi Parikh, MD, FACP, FACAAI is one the investigators for the Covid-19 vaccine trials at the New York University Vaccine Center.

Purvi is an adult and paediatric allergist and immunologist at Allergy and Asthma Associates of Murray Hill and is currently on faculty as Clinical Assistant Professor in both departments of Medicine and Paediatrics at New York University School of Medicine.

She is an avid vaccine champion with the UN Foundation’s vaccine program Shot@life.  She is highly passionate in health policy and travels to Washington, D.C. multiple times per year to speak with legislators to influence health policy.


Natali Serafin

Natali Serafin a research scientist working at the Vaccine and Infectious Disease Analytics (VIDA) research unit in South Africa. Natali’s expertise includes project management, epidemiology, and clinical medicine. She is currently managing a sentinel Covid-19 surveillance taking place at Chris Hani Baragwanath Academic Hospital in Soweto.



Follow the people working on all aspects of science that will make these coronavirus vaccines safe and effective


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Sanchit Neema


Anurag Mishra


Prativa Majee


Ed Belongia MD


Prof Madhu Gupta


Dr. Krutika Kuppalli


Michael Mina


Dr E Venkata Rao


Dr. Angela Rasmussen


Dr Tim Mastro


Jon Klein


Sandeep Panigrahi


Prof Katie Ewer


Abraham Flaxman


Ragon Institute


Victor M. Corman


You can help too

Thousands of volunteers around the world are signing up to help trial these vaccines to make sure they’re safe and effective.

Find a trial near you


Team Halo is an effort to support and celebrate the inspiring collaboration between scientists all over the world to help us end this pandemic with safe and effective vaccines.

The ‘halo’ represents the ring of connected science that circles the globe.

All participation is voluntary. If you’re involved in the vaccine search and would like to be listed on this site, please get in touch.

Team Halo was established in partnership with the The Vaccine Confidence Project at the University of London’s school of Hygiene and Tropical Medicine. It is proud to collaborate with the UN Verified Initiative and Gavi, the Vaccine Alliance. Support is provided by Luminate, IKEA Foundation and the Global Challenges Foundation.