Updated: 6:10 PM EST Mar 5, 2021 WXII12.com Web Staff North Carolina Department of Health and Human Services Secretary Dr. Mandy Cohen and Rev. Dr. William Barber, II received single doses of the Johnson & Johnson vaccine Friday.The vaccine, also called the Janssen vaccine by the FDA, only needs one dose to be at its fullest effectiveness. "I am so grateful that I was able to get a COVID vaccine, and, in particular, I got the Johnson & Johnson vaccine today. I am thankful that it's a one-shot dose, so it's one and done," Cohen said. "We now have three safe and effective...