When the pandemic began last year, children were relatively less affected by the coronavirus than adults; the bigger worry used to be that they might be asymptomatic carriers who could infect older family members like grandparents, while remaining fine themselves. But now virologists have sounded the alarm over the impact of a possible third wave on children in India. What are they basing this on? Does the Covid third wave pose a bigger threat to children since they are not vaccinated? What do we need to do to prepare for this?