Last Sunday saw an overwhelming response to the AstraZeneca Covid-19 vaccine registration opt-in system, when all 268,000 vaccination slots were taken up in about three hours. Yet this number represents a small percentage of the millions of adults who live in the capital and surrounding state of Selangor. Are we in danger of reading too much into Sunday’s exercise? Melisa Idris and Sharaad Kuttan speak to Dr Helmy Haja Mydin, Consultant Respiratory Physician at Pantai Hospital KL.