Serological tests for syphilis gave more positive results in serving Gurkha (Nepali) soldiers from west Nepal than in those from east Nepal or in Gurkha recruits. The soldiers had served from four to 11 years. The source of their infection was not clear. Positive results were rather less common in black patients born in the tropics attending a genitourinary medicine in London and were similar t...

A quality assurance program of the Chagas' disease laboratory network of Argentina has been conducted by the National Reference Center since 1988, with the aim of assessing the reliability of serologic test results. Chagas' disease is endemic in Argentina, but the prevalence of seropositivity for Trypanosoma cruzi among 18- to 20-year-old men decreased from 5.8% in 1981 to 1.8% in 1994. About 6...

The efficacy of the Chagas' Disease Control Program was estimated in Minas Gerais State. Areas with different intervention times (10 and 5 years) and without intervention (control) were compared in order to verify a possible reduction in Trypanosoma cruzi infection incidence rates among those born after the Control Program. The Program efficacy was estimated comparing this study's infection rat...

QUESTION UNDER STUDY In Switzerland, vaccination against varicella is not recommended in the basic immunisation schedule. However, for individuals aged 11-40 years who do not have a reliable varicella history the Swiss Federal Office of Public Health recommends either (i) a vaccination or (ii) a serology test and vaccination of those with a negative result. In the Travel Clinic of the Universit...