Evaluation of the excess of tuberculosis attributable to HIV/AIDS infection

Abstract

An exercise for the estimation of the percentage risk of cases of tuberculosis attributable to co-infection HIV/AIDS, using the following formula, is propounded: RA%= p[m2r (hR-h)] + (1-p)[m3r (hR-h)] / p[m1+m2r (hR+1+h)] + (1-p)[m3r (hR+1-h)] x 100 where: p= proportion of BK infected, r= risk of tuberculosis infection, h= proportion of persons infected with HIV, m1= breakdown rate of endogenous tuberculosis, m2= breakdown rate of exogenous tuberculosis, m3= breakdown rate of primary tuberculosis, R= relative risk of morbidity among persons infected with HIV.