Varicella vaccine given subcutaneously (under the skin). It is recommended for all children under 13 and for everyone 13 or older who has never had chickenpox. In the United States two doses are recommended. In the first case a first dose is administered at 12 to 15 months and a second dose at age 4–6 years. For people older than 13 the two doses are administered 4 to 8 weeks apart. The varicella vaccine did not become widely available in the United States until 1995. In the UK, the vaccine is only recommended in people who are particularly vulnerable to chickenpox. The
Center for Scientific and Technical Creativity of the Youth Center for Scientific and Technical Creativity of the Youth Centers for Scientific and Technical Creativity of the Youth , NTTM) were established in the late Soviet Union during "perestroika" as enterprises whose goal was commercialization of science and technology. Other translations of the Russian term are Scientific and Technical Creativity of Youth Center, Youth Center for Scientific Creativity, etc. The Centers were introduced by a joint decree of the USSR Council of Ministers, All-Union Central Council of Trade Unions, and Komsomol Central Committee no. 321 (March 13, 1987) "об образовании единой общегосударственной системы научно-технического творчества молодежи". They were established as