Vanessa Lachey warns parents about dangerous virus that hospitalized son

Actress and mother of three, Vanessa Lachey, sits down with Fox News’ Dr. Manny Alvarez to talk about the other dangerous seasonal virus many parents may not know about, Respiratory syncytial virus (RSV). Lachey’s youngest child, 1-year-old Phoenix, developed the disease last winter and was hospitalized for 6 days from it.