I have used Alloderm, Strattice and Surgimend in breast reconstruction, and I find that Alloderm seems to incorporate best, especially if there is a problem in breast healing after a mastectomy. That is, if the skin healing is problematic, the Alloderm seems to maintain integrity and resist infection better. However, personal experiences may vary from surgeon to surgeon and among patients.
Like any foreign material, Alloderm (or any dermal matrix) can become infected. I have also seen a redness in the dependent (lower) part of the breast that may not be an infection at all, but may represent a hypersensitivity reaction or simply dependent swelling of the soft tissue. If you experience redness like this, it is important to immediately see your surgeon to make sure there is not an infection. Many infections can respond to antibiotics alone, but some infections may require removal of the Alloderm and an associated implant/tissue expander.