[Resistance to azidothymidine in human immunodeficiency virus (HIV) infection].

The phenomenon of resistance to azidothymidine during the infection of human immunodeficiency virus (HIV) is reviewed. Different aspects of AZT resistance, including biological and virological characteristics of resistant HIV isolates, genetical mechanisms of resistance, cross-resistance to other nucleoside analogs and non-nucleoside inhibitors, are analyzed. The role of target cells in AZT resistance is also discussed.

Foster care in the Soviet Union.

The recently established Soviet Children's Fund has been making significant progress in developing present day, diversified forms of foster care for children who are casualties, as it were, of decades of social deterioration. The Fund has become a national promoter of the rights of children and has enlisted both the public and the government in supporting programs to protect children and to care for those who need out-of-home care.