DNA contamination during IVF

A few articles have appeared recently discussing the possibility of DNA contamination if ICSI is used during IVF. Some researchers in Spain have intentionaly injected bacteria along with sperm into mice eggs and determined that DNA from the bacteria is present in the DNA of the resulting offspring. This raises a potential concern that contamination could occur during handling of sperm or during the ICSI process that could result in foreign DNA being present in the embryos. However, researchers say there is little cause for alarm since the contamination does not manifest any characteristics. Nevertheless, there are calls for increased attention to this matter since the available data is minimal and the likelihood of contamination by bateria on the sperm donor's skin is quite high.