The relentless spread of tuberculosis in Zambia--trends over the past 37 years (1964-2000).


OBJECTIVE: To review trends in the rates of tuberculosis (TB) case notifications over a 37-year period.

DESIGN: A retrospective study of Ministry of Health records on TB notifications between 1 January 1964 and 31 December 2000.

SETTING: Zambia, sub-Saharan Africa.

METHODS: Retrospective analysis of case-notification data for TB of the Zambia Ministry of Health annual returns.

OUTCOME MEASURES: Annual TB case-notification rates and trends over the past 37 years.

RESULTS: TB case-notification data from 1964 to 2000 show a 12-fold increase over the past two decades, and apparent gains in controlling TB seen in the 1960s and 1970s have been reversed over the past two decades. A stable situation during the period 1964-1984 (case-notification rate remained around 100 per 100,000 population) was followed by an exponential increase since the mid-1980s. The absolute number of new TB cases increased from 8,246 in 1985 (124/100,000) to 38,863 (409/100,000) in 1996 and 52,000 (512/100,000) in 2000. Comparison of case-notification rates over the past 2 decades with neighbouring countries (Zimbabwe, Malawi and Tanzania) show that Zambia has one of the highest case-notification rates in the region.

CONCLUSIONS: Zambia, like many countries in Africa, is in the midst of a serious TB epidemic and there are no signs that it is abating. This increase was most likely due to the impact of the HIV/AIDS epidemic and subsequent breakdown of TB services. Concerted donor-government efforts should invest appropriately in long-term plans for TB control.


South African Medical Journal (2003) 93 (2) 149-152

The relentless spread of tuberculosis in Zambia–trends over the past 37 years (1964-2000).

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