There is a long history of medical research that involves intentionally infecting healthy people in order to study diseases and their treatments. Such research-what might be called "human challenge studies"-are an important strand of much current research-for example, in the development of vaccinations. The many international and national guidelines about the proper conduct of medical research ...

Meeting the social service needs of the elderly is a majtor Challenge to the people of the United States. To meet this challenge, many communities across the nation are developing programs to foster social support Systems involving elderly volunteers. This research project focuses on such a program, called the System to Assure Elderly Services (STAES), which is located in St Louis City. The pro...