Franklin A. Neva followed by service with the US Navy at Naval Medical Research Unit-3 in Cairo, Egypt. He spent several years at Harvard University as a researcher. He became a professor at University of Pittsburgh, where he worked with Jonas Salk on a vaccine for polio. While at Pittsburgh, he also isolated ECHO 16, the virus responsible for Boston exanthem disease. This was the first description of that disease. Together with Thomas Weller, he isolated the Rubella virus in 1962. In 1964 he moved back to Harvard to head the Department of Tropical Public Health. In 1969 he joined the National Institutes
Salk "salk" is meant to operate on a battlefield along with other "salk's" on a landscale not greater than 50 x 100 metres. There are no logistical support elements in the structure of a "jagu". In the Canadian Army 'fireteam' refers to two soldiers paired for fire and movement. Two fireteams form an 'assault group' and two assault groups form a section of eight soldiers. Many other armed forces see the squad as the smallest military unit; some countries' armies have a pair consisting of two soldiers as the smallest military unit. In others a fireteam is composed of two pairs