Researchers have developed a skin cancer treatment based on a genetically modified herpes virus. The modified herpes virus doesn't produce the protein that makes it attack healthy cells. Instead, it infects cancerous cells. The virus continues to multiply inside the cancerous cells, eventually causing them to burst open allowing the virus to spill out and attack new cancerous cells, starting the process all over again. Researchers think that the drug could be used to treat other kinds of aggressive cancer. The drug has already been submitted to the FDA and doctors are hopeful they will be able to start administering it in 2017.