Dr Alex Bowmer
Nathan Peiffer Smadja
Dr Vicky Baillie
Dr Asher Williams
André Báfica
Juan Ambrosioni
Jeanine du Plessis
Faith Uwadiae
Dr Will Budd
Dr Sarah Merrifield
Dr Natalia Pasternak
Dr Soha Albayat
Professor Shiv Pillai
Daniela Ferreira
Gabriel Carrasco
Dr Jamie Parker
Dr Paul F. McKay
Dr Ruby Raphael
Dr Punam Krishan
Professor Galit Alter
Leonie Mayer
Wasim Syed
Dr Ahmad Abou Tayoun
Björn Meyer
Dr Meenal Viz & Dr Nishant Joshi
Julio Sempere
Rômulo Neris
Federica Cappuccini
Natali Serafin
Jaqueline Goes de Jesus
Dr Partha Kar
Dr Simone Richardson
Dr Walid Zaher
Purvi Parikh
Dr Kiran Morjaria
Dineo Thaele & Matshidiso Sello
Dr Paul Ian Cross
Andrea Mazzella
Dr Gustavo Cabral
Sean Elias
Shamaila Anwar
Samantha Vanderslott
Dr Nighat Arif
Dr Ajay M Verma
Dr Anna Blakney
Featured Guides
These volunteers are making short videos on TikTok and Instagram to explain their part in the vaccine effort.
@vacdoc
Leonie Mayer
Leonie Mayer is a PhD student in the Emerging Infections Team under Professor Addo at the University Hospital and the Institute for Tropical Medicine in Hamburg, Germany. The team works on clinical trials of new vaccines against emerging infectious agents such as Ebola virus, MERS-CoV and SARS-CoV-2.
Leonie’s research is focused on understanding the T cell immune response after coronavirus infection or vaccination with different vaccine platforms. Before starting her PhD, she studied Vaccinology in Spain, France and Belgium as part of the Erasmus Mundus Master LIVE.
In her free time, Leonie likes to go hiking, painting and eating chocolate.
@purviparikhmd
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.
@drpunamkrishan
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.
@nathanpsmad
Nathan Peiffer Smadja
Nathan Peiffer-Smadja is a physician specialised in Internal Medicine and Infectious Diseases, a fellow of the French Society of Infectious Diseases, a PhD candidate in Public Health and a Honorary Clinical Research Fellow at Imperial College London. He is currently living in France and has worked on the Covid-19 Vaccine for over 6 months.
@drjamieparker
Dr Jamie Parker
Dr Jamie W R Parker MBBChir MRCGP MA (Cantab) is a General Practitioner (GP) based in Nottingham and working in the NHS, helping deliver the Covid-19 vaccines to his patients.
Jamie has been a Senior GP for 10 years, he trained at Cambridge University, and became a fully qualified GP through the Nottingham Vocational Training scheme, in 2010.
On the first day of lockdown, March 2020, Jamie wrote and performed a cover of Disney’s Frozen hit “Let it Go”, “Stay at Home” on his Twitter account. He did this to try and help publicise the importance of the ‘stay at home’ message and social distancing in preventing the spread of the coronavirus. The song went viral, and before he knew it, he was on local and national TV and radio, including Sky News, The Chris Evans Breakfast Show and BBC1, being dubbed ‘Nottingham’s singing doctor’. Jamie has since become a regular GP sofa guest on the BBC breakfast show, appearing weekly throughout the pandemic, trying to spread important messages in a calm and measured way.
Jamie lives with his family and three children in Nottingham, and loves the outdoors, sport, and music.
@drnighatarif
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 consult fluently with patients in Urdu and Punjabi. Nighat is also the resident doctor on BBC Breakfast, ITV’S This Morning and BBC LookEast, updating viewers on the latest medical news. Additionally, Nighat is an ambassador of many charitable causes including Roald Dahl’s Marvellous Children’s Charity, HerSpirit and is heavily involved with supporting NHS Blood and Transplant.
Dr Nighat remains authentic to her values as a British Pakistani, Muslim woman and mother navigating and uniting the different cultures in a positive way. She has integrity, substance, humanity and style and approaches life with humour. Nighat is married with three young boys, she loves baking, spin classes with friends, watching movies and reading.
@my_lil_happinness
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.
@oromulismo
Rômulo Neris
Rômulo is a Biophysicist and PhD student in Immunology and Infection at the Federal University of Rio de Janeiro. He was studying at the University of Califorina-Davis in the USA before returning to Brazil during the pandemic to help with research on the new coronavirus. His work focuses on understanding the mechanisms that make our bodies develop immunity against Sars-CoV-2 and the reasons why some people develop severe illness while others experience mild symptoms.
Community
Follow the people working on all aspects of science that will make these coronavirus vaccines safe and effective
@FLAHAULT
Antoine Flahault 
@kristenldegraaf
Kristen de Graaf
@rvenkayya
Rajeev Venkayya
@KrutikaKuppalli
Dr. Krutika Kuppalli
@Debasis13252747
Debasis Nayak
@SheuliPorkess
Sheuli Porkess
@VaccineEpi
Nick Grassly
@medwma
World Medical Association
@ombaggio
Ombretta Baggio
@drpandeyak
Dr A K Pandey
@ChinthaparthiR
Chinthaparthi Prabhakar Reddy
@michaelmina_lab
Michael Mina
@marykesteffens
Mary Kesteffens 
@melvingeorge200
Melvin George
@angie_rasmussen
Dr. Angela Rasmussen
@DrTimMastro
Dr Tim Mastro
@naveenthacker
Naveen Thacker
@drsanjaykrai
Dr Sanjay K Rai
@robin_shattock
Robin Shattock
@drkamranzaman
Kamran Zaman
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
About
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.