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.
The United States has very low rates of vaccine-preventable diseases, but this isnât true everywhere in the world. Only one disease â smallpox â has been totally erased from the planet. Polio is close to being eliminated, but still exists in several countries. More than 350,000 cases of measles were reported from around the world in 2011, with outbreaks in the Pacific, Asia, Africa, and Europe.