There is mounting pressure on the government to close nurseries in the current COVID lockdown. There is little data available to assist policy makers in making this decision. ALSPAC is a unique position with our second generation of children, many of whom will be of pre-school age. In the first instance this project will determine whether COVID cases are more or less likely in the parents of children of nursery age. Depending on the results we may approach parents to complete a brief questionnaire on whether their children are currently attending nursery and what the consequences might be if their current provieer were to close.