by a mycoplasma. Chanock replied that he never heard of PPLO’s. At Hayflick’s request egg yolk in which the Eaton Agent was grown was sent to him by Chanock. Hayflick grew a mycoplasma, the smallest free-living microorganism, on a unique agar growth medium that he developed. Together they proved that it was the etiological agent of PAP. Hayflick named the organism Mycoplasma pneumoniae. Chanock was named head of the NIAID's Laboratory of Infectious Diseases in 1968. The WI-38 normal human cell strain gifted to Chanock resulted in the development of an adenovirus vaccine in 1964. This vaccine has been used in the world’s military where the virus produces a disease similar to the flu and forces recruits to enter clinics for many days. Researchers working with Chanock developed another vaccine using WI-38 to prevent Hepatitis A. They also produced a rotavirus vaccine, addressing the most common cause of severe diarrhoea in infants and young children, as well as an influenza virus vaccine in the form of a nasal spray. Efforts were undertaken to create a vaccine to deal with dengue fever, though efforts to create immunizations for para-influenza viruses and respiratory syncytial virus were unsuccessful. Chanock was elected to the United States National Academy of Sciences in 1973. He was also honored with the Robert Koch Prize, the Albert B. Sabin Gold Medal, the E. Mead Johnson Award, the Public Health Service's Meritorious Service Medal and Distinguished Service Medal. In 1972, he was presented with the Gorgas Medal from the Association of Military Surgeons of the United States (AMSUS). NIAID Director Dr. Anthony Fauci called Chanock "an outstanding scientist whose innumerable contributions to the understanding of viral diseases helped make the world a healthier place for millions of people". A resident of Bethesda, Maryland, Chanock died at age 86 on July 30, 2010, at an assisted living facility in Sykesville, Maryland, due to complications of Alzheimer's disease. He was survived by a son, Stephen Chanock, and four grandchildren. References 1924 births 2010 deaths American pediatricians American virologists Deaths from Alzheimer's disease Members of the United States National Academy of Sciences Scientists from Chicago University of Chicago alumni Vaccinologists Neurological disease deaths in Maryland People from Sykesville, Maryland Pritzker School of Medicine alumni