These answers are for informational purposes and do not replace a physician head-to-head visit. A patient-physician relationship is not established.
Zoon's balanitis is not felt to be due to bacteria, so it is very unlikely that it can be transmitted.
Zoon's is felt to be a reaction to irritation. It is nearly always found in uncircumsized males and is regarded to be caused by a dysfunctional prepuce. There is not enough space as the prepuce is tightly wrapped over the glans penis and this causes friction and the retention of skin cells and urine. This sets off irritation and a rash. Thus, there is more of an irritant dermatitis than infection.
Circumcision is curative although other treatments such as Protopic ointment 0.1. and changing washing habits have been tried. Occasionally bacteria or yeast can be superimposed on Zoon's and treatment for this may improve things. However, Zoon's is not a principally bacterial infection.
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