Important note: Information in this article was accurate in 2004. The state of the art may have changed since the publication date.
Mail & Guardian (Johannesburg) - March 12, 2004
Rising infections: HIV has led to an increase in new tuberculosis (TB) infections not only in individuals with HIV, but also in HIV-negative individuals, according to a cohort study involving South African gold miners published in the March 5 edition of AIDS.
The findings of this study stand in contrast to a similar study published last year that was conducted in three South African gold mines and found a stable incidence of TB among HIV-negative miners despite huge increases in the incidence of TB among their HIV-positive colleagues.
The study found that the pro-portion of TB cases attributable to HIV increased from zero in 1991 to 41% in 1997.
"The increased incidence of tuberculosis in HIV-negative miners is likely to be caused by onward transmission from the increased number of (mainly HIV-positive) tuberculosis cases."
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