EXECUTIVE SUMMARY Page ii Denver Metro Chamber of Commerce The Impact of I-70 Congestion on Colorado â Denver to Grand Junction Business Impacts: The lure of Coloradoâs quality of life enhances business recruitment and retention efforts; I-70 congestion may make economic development efforts more difficult.
The development of effective vaccines to prevent paralytic polio was one of the major medical breakthroughs of the 20th century. Two different kinds of vaccine are available, an inactivated (killed) polio vaccine (IPV) and a live attenuated oral polio vaccine (OPV). The presence of neutralizing antibody against polioviruses is considered a reliable correlate of protection against poliomyelitis.
Inactivated Polio Vaccine (IPV) can prevent polio. A 1916 polio epidemic in the United States killed 6,000 people and paralyzed 27,000 more. In the early 1950's there were mor â¦ e than 25,000 cases of polio reported each year.Polio vaccination was begun in 1955.t marked the launch of the Global Polio Eradication Initiative, spearheaded by WHO, Rotary International, the US Centers for Disease Control and Prevention (CDC) and the United Nations Children's Fund (UNICEF).