Biography: Jonas Salk Developer of Polio Vaccine Jonas Salk Date of birth: October 28, 1914 Jonas Salk Date of death: June 23, 1995 Back to Jonas Salk Biography In America in the 1950s, summertime was a time of fear and anxiety for many parents; this ...

In the summer of 1950 fear gripped the residents of Wytheville, Virginia. Movie theaters shut down, baseball games were cancelled and panicky parents kept their children indoors — anything to keep them safe from an invisible invader. Outsiders sped t...

Early Polio History Polio (also known as poliomyelitis or infantile paralysis) is an illness caused by poliovirus. At one time, poliovirus infection occurred throughout the world. The history of polio begins with records from antiquity mentioning crip...

By AMI KLIN, PH.D AND FRED R. VOLKMAR, M.D. Asperger Syndrome (AS, also known as Asperger’s Disorder) is a severe developmental disorder characterized by major difficulties in social interaction, and restricted and unusual patterns of interest and behavior. Autism is the most widely recognized pervasive developmental disorder (PDD). Other diagnostic concepts with features somewhat similar to autism have been less intensively studied, and their validity, apart from autism, is more controversial. One of these conditions, termed Asperger syndrome (AS) was originally described by Hans Asperger, who provided an account of a number of cases whose clinical features resembled Kanner’s (1943) description of autism (e.g., problems with social interaction and communication, and…