Only if they have sores themselves. It is the fluid inside that is contagious. No one in my family has ever contracted school sores from me, but I am very strict with my own personal hygiene by not sharing towels, face washers, and ALWAYS washing my hands before I touch anyone or anything. They are very itchy and sore and I know I touch them so it is imperitive that I look after my own personal hygeine so I dont affect other people.