The epidemiology of tuberculosis in a geographically defined area. Eastern Health Board Tuberculosis Advisory Committee

Abstract

This paper profiles the epidemiology of tuberculosis in a geographically defined area, the Eastern Health Board. In 1990, 191 new cases of the disease were notified, 15.5/100,000. One hundred and eighty five were from the indigenous population. Fifty four per cent were male. Nearly 50% of all cases occurring in females do so in those under 35 years and for males, 45% occur in those less than 45 years. One hundred and three (54%) had pulmonary tuberculosis alone and only 50 (26%) had a presumptive diagnosis. Although the lower social classes were overrepresented, cases occurred throughout all social classes and a significant proportion were either gainfully employed or in full time education. Data on BCG status was incomplete, however 28 cases were known to have had BCG at some stage of their life. Thirteen cases were also known to be HIV positive. The contact tracing process was responsible for locating 33 (17%) cases. Continuing surveillance both at national and local level is required in order to assist eradication.