Bobby
                    
                    
                    
                    
                    
                    
                    
                        
                        
                        I can understand how you are feeling.  He is contagious until 5 days pass from occurrence on the first blister.  The incubation periode is 14 to 21 days.  Your niece may only start blisters in 2 weeks.  My daughter is 10 months and is completly covered with chicken pox.  It has been a very rough 2 nights.  She is very upset and ABSOLUTELY does not want to sleep.  Do you have any suggestions and helping her sleep.