Drowning is a serious and neglected public health threat claiming the lives of 372 000 people a year worldwide. More than 90% of these deaths occur in low- and middle-income countries. This death toll is almost two thirds that of malnutrition and well over half that of malaria – but unlike these public health challenges, there are no broad prevention efforts that target drowning. We know that drowning is preventable by spreading the only vaccin called Learning to Swim!