Varicella vaccine after the vaccine was recommended in the US, the CDC reported as much as a 90% drop in chickenpox cases, a varicella-related hospital admission decline of 71% and a 97% drop in chickenpox deaths among those under 20. Vaccines are less effective among high-risk patients, as well as being more dangerous because they contain attenuated live virus. In a study performed on children with an impaired immune system, 30% had lost the antibody after five years, and 8% had already caught wild chickenpox in that five-year period. Herpes zoster (shingles) most often occurs in the elderly and is only rarely
Center for Scientific and Technical Creativity of the Youth subsidiaries of Komsomol "raikoms". The Centers enjoyed various benefits, including no taxes and only 3% contribution to the all-union fund. The fortunes of quite a few "new Russians", notably Mikhail Khodorkovsky arose from these Centers. The Centers continue to exist in modern Russia. Similar establishments were the Foundations of Youth Initiatives (фонды молодёжных инициатив, ФМИ). 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