Albert Zaven Kapikian (1930 – 2014) was an Armenian-American virologist who developed the first licensed vaccine against rotavirus, the most common cause of severe diarrhea in infants. He was awarded the Sabin Gold Medal for his pioneering work on the vaccine. He is the 13th recipient of this recognition, awarded annually by the Sabin Vaccine Institute. Called the father of human gastroenteritis virus research, Kapikian identified the first norovirus, initially called Norwalk virus, in 1972; and he and his colleagues at the National Institutes of Health identified the hepatitis A virus in 1973.