The controller is priced at $50 USD, and will release alongside Valve's Steam Link service, which is also slated for a $50 release. The controller's worldwide pricing will be announced closer to November, Valve said. Hands-on With the Updated Valve Controller. 01:37.
Polio rose to epidemic proportions in the United States with more than 21,000 cases reported in 1952 [3]. With the development of effective vaccines against the virus during the 1950s the incidence of poliomyelitis went in decline and the last case of wild-type virus reported in the United States was in 1979.
A: Polio does still exist, although polio cases have decreased by over 99% since 1988, from an estimated more than 350 000 cases to 416 reported cases in 2013. This reduction is the result of the global effort to eradicate the disease.