[header] How to prevent head lice [title] Avoid direct head-to-head contact. [step] The common theory as to why children are more susceptible to head lice than adults is that children are less likely to respect personal space. They may also be exposed to situations where head-to-head contact is unavoidable like class nap times or sitting close together side-by-side at their desks. 
It's as simple as two kids touching heads while leaning over a colouring book. Try to leave space between you and others in order to prevent the spreading of head lice.