With The Latest Measles Outbreak In Tennessee, Where Four Cases Have Been Diagnosed, The UVA Health Blue Ridge Poison Center Warns That Misinformation Is Causing Some To Overdose On Vitamin A, Which Can Cause Liver Damage. Measles Is A Highly Contagious Viral Disease That Can Lead To Severe Complications, Especially In Children. While Vitamin A May Be Used Under Supervision To Boost The Body’s Defenses, Taking Excessive Amounts Is Harmful. The CDC Reminds The Public That The MMR Vaccine Is The Safe, Effective Protection Against Measles.