The historical review study is a synthesis of primary data (archival materials, survivors' diaries, oral history collections, etc.) and secondary data (memoirs, monographs, etc.). The synthesis was accomplished after adequate external criticism of the sources and it describes the prisoners' life (Jews, political prisoners, homosexuals, Gypsies, mental illness) in forced communities during World War II., mainly in Terezín ghetto in the Czech Republic. Life in detention centres and hideouts was a daily struggle for survival. At the forefront of this fact are strategies which refer to preventive health care and life care. These include strategies how to stop the infections spreading (e.g. hand hygiene, cleanliness of the body and environment, vaccination, pest control), how to boost the immunity (exercise, cold baths, ventilation), and the psychological and spiritual (Christian, Rabbinic) assistance and education. Remembering the tragic aspects of life in labor camps, Jewish ghettos, concentration camps and shelters during the World War II. aims to draw attention to the fact that similar scenarios can be shown in forced communities even today.