Groundbreaking vaccine targets deadly skin cancer

Fox News senior medical analyst Dr. Marc Siegel discusses an experimental melanoma vaccine breakthrough that reportedly lowers recurrence risk by more than 40%. Siegel also shares stories of healing from his book, 'The Angels Among Us.'

Fox News senior medical analyst Dr. Marc Siegel joins the show to discuss a major melanoma vaccine breakthrough from Moderna and Merck that cuts recurrence or death risk by 42%. Siegel explains how the mRNA shot trains the immune system to target skin cancer. He also shares details from his book, 'The Angels Among Us,' about a doctor saving an Army chaplain.