Chicken pox is highly infectious and there is no simple prevention other than giving a special immune globulin to vulnerable members of your family especially babies under 6 months. Speak to your paediatrician about this. Hand washing is essential especially after you have touched your son who has chicken pox. The disease only becomes non- infectious when the blisters scab and fall off. You do not need to apply calamine lotion to his chicken pox any more at this stage.
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