Prevalence of vitamin A deficiency. Vitamin A deficiency (VAD) is a lack of vitamin A in humans. It is common in poorer countries but rarely seen in more developed countries. Nyctalopia (night blindness) is one of the first signs of VAD.pproximately 250,000 to 500,000 malnourished children in the developing world go blind each year from a deficiency of vitamin A, approximately half of whom die within a year of becoming blind. The United Nations Special Session on Children in 2002 set a goal of the elimination of VAD by 2010.
Shawn has been married to Caroline Brady since he first appeared on-air in 1983. The son of Peter Brady, and the grandson of Patrick Aloysius and Nora Molly Brady, Shawn has a brother Eric and two sisters named Molly and Colleen.
Jason Cook as Shawn-Douglas Brady. Shawn-Douglas Shawn Brady is a fictional character on the NBC daytime soap opera Days of our Lives. 1  Noel Bennett Castle (04/1987; recurring) 2  Paul Zachary (04/1990-07/1990; recurring)  Scott Groff (07/1990-07/1995; recurring)