T he COVID-19 pandemic is directly and indirectly impacting children's health [1]. Although the evidence base in this area is expanding, there is still much we do not know. Paediatric Multisystem Inflammatory Syndrome temporally associated with COVID-19 (MIS-C: Multisystem Inflammatory Syndrome -Children) and long COVID are the most notable direct effects of COVID-19 infection on children [2,3], though they are rare [4]. Data suggest that children represent a very low proportion (between 1 and 3% of the total) among known COVID-19 infections, at least in the early stages of the COVID-19 pandemic [5]. However, because children are likely to have a higher proportion of asymptomatic infection than adults [6], this might be an underestimation. The most significant population-level health harms for children from the pandemic are indirect, reflecting the impact of health system adaptations and policy changes [1,7] such as elective care postponement and cancellation and possibly remote (instead of face-to-face) consultation which remains unevaluated. Evidence is emerging from a variety of different countries, illustrating the breadth of problems. In England, a large national longitudinal study found an increase in the rates of probable mental health disorders among children aged 5-16 before (10.8% in 2017) and after (16% in 2020) the pandemic. However, more than a fifth of children and 44.6% of 17-22-year-olds with a probable mental health disorder did not seek mental health service support due to the pandemic [8]. Similarly, a very stark drop in accident and emergency attendances for mental health problems during and after the first COVID-19 policy measures and a steep rise in the first months of 2021 were reported in Scotland [9]. Emergency Department contacts among children in England fell to 40%