If my wife has strep throat, how can i and our small children keep from getting infected?

Avoidance: Avoid direct contact with her saliva or where inadvertent transfer of the material may have occurred until she has been on treatment 24-48 hrs.Use hand sanitizer or good hand washing to decontaminate your hands. Avoid drink sharing or other similar practices. Attack rates in family contact can vary from a high of 1/4 to a low of 1/32 bases on these variables.

avoid transfer of ..: Oral and nasal secretions. Wash hands, do not share cups or utensils, cover up coughs and sneezes, avoid mouth contact. Even if there is contact there may not be a resultant infection.