http://www.einstein.yu.edu - With the help of animations, Betsy Herold, M.D. shows why some drugs that prevented HIV and herpes transmission in the lab failed to protect women in clinical trials. See how proteins in semen act as an “invisibility cloak” for HIV and herpes viruses allowing them to bypass drugs and infect cells. Using lab techniques informed by clinical results, Dr. Herold conducts translational research on the next generation of drugs to prevent HIV and HSV infection. She is professor of pediatrics and of microbiology and immunology at Albert Einstein College of Medicine and chief, division of pediatric infectious diseases at The Children’s Hospital at Montefiore.