There is very good evidence that children who have COVID-19 are much less likely to develop severe symptoms and much less likely to die from the disease than people in older age groups.There is good evidence that children under 13 years old are less susceptible to developing clinical disease (this means having recognisable signs and symptoms) than adults. It is not yet clear whether this is also the case for older children. There is some research indicating that children aged 13 years and under may be less susceptible to infection than adults, but the confidence in this evidence is low. There is insufficient research to say whether this is the case for older children. There is some evidence to suggest that children transmit the virus less than adults, but more research is needed to reduce uncertainty. Children are more likely to catch an infection from adult(s) in their household. There is evidence that schools are a low-risk environment for transmission. There are some limited data suggesting that children from a black, Asian or minority ethnic background may be at higher risk of severe disease, consistent with evidence for adults. Large and well-designed studies are needed in order to draw firm conclusions. Pregnant women are not more likely to contract the virus. Transmission of the virus from mothers to babies is low. Some babies born to COVID-19 positive mothers will develop an infection; these babies are not at increased risk of severe disease.