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.
By that time, polio vaccinations will have become part of routine immunization programs around the world. Once the final case of polio is recorded, it will take three years to ensure that the last case is, in fact, the final one. That means that if the final case is seen this year, all of these programs will continue to need funding and volunteers until 2019, at a price tag of $1.5 billion that will be funded by governments and donors such as Rotary.