Born in Brooklyn, he earned a bachelor's degree in
chemical engineering from the
College of the City of New York in 1943, then a master's degree from the
Polytechnic Institute of Brooklyn in 1953 and a MEE from the
New York University in 1956. In the early 1960, Ismach developed a jet injector with an hydraulic pump operated by a foot pedal, known as the Ped-O-Jet. In 1964, Aaron Ismach invented an intradermal nozzle for the injector, which allowed delivery of the smallpox vaccines. He was awarded the
Exceptional Civilian Service Award for his invention. During the 1967
World Health Organization's campaign of eradication of Smallpox, his device capable to vaccinate up to 1000 people an hour, was used for the
mass vaccination campaign, being particularly useful on the African continent. == References ==