It is logical to be concerned regarding the risk of HIV, Hepatitis, or some other serious infection when Alloderm is implanted. The processing of this human-derived material destroys these pathogens. Essentially, there is no risk of transmissible illness. However, alloderm is not your own native tissue. Thus, though the risk is small, there is a slightly increased risk of infection following surgery with this substance. There are newer materials like alloderm (surgimend, surgisis, etc) that each have positives and negatives. They are all essentially dermal matrices (They all help your body to rebuild a layer of tissue). The best tissue is your own tissue. Following a mastectomy, however, much of your own tissue is lost. Sometimes a supplement is necessary. These materials are all deemed safe. I use them only when necessary. They add expense and surgical time to a procedure.