Give Current Affairs Quiz Online Test of 21 November 2020. Learn about The United Nations (UN) has worked together with The Vaccine Confidence Project at the University of London's School of Hygiene and Tropical Medicine to attempt Team Halo. It is an activity which plans to counter the deception around COVID-19 immunizations. This activity has been begun after 61% respondents from India are wary about COVID-19 antibodies. Group Halo gives a stage to researchers to associate with overall population for reacting their questions for countering immunization deception.