Over 51 per cent of Mumbai's general paediatric population - those below 18 - have antibodies for COVID-19, a sero survey conducted in the city between April 1 and June 15 has revealed. We speak to Dr Rajesh Parikh, Director, Medical Research, Jaslok Hospital, Mumbai, and Dr Purvez K. Grant, Managing Trustee, Grant Medical Foundation, about what this means for the safety of children and what role will vaccinations play in the future.