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.
Polio incidence has dropped more than 99 percent since the launch of global polio eradication efforts in 1988. According to global polio surveillance data from March 9, 2016, 5 wild poliovirus cases were reported in Pakistan and 1 wild poliovirus case was reported in Afghanistan in 2016. In 2015, 74 cases of wild poliovirus were reported: 54 from Pakistan and 20 from Afghanistan. On March 27, 2014, Dr. Frieden and senior CDC immunization staff were present when India, along with the other 10 countries of the South East Asia Region, was certified polio-free.