In a detailed study of the pathology of tuberculous infection made in Finland in 1961,
tuberculous foci were found at autopsy in 61 of 67 non-vaccinated subjects and in 35 of 83
BCG-vaccinated subjects, all of whom had died between the ages of 1 and 45 years (with 2
exceptions from causes other than tuberculosis). In the present note on the same material,
national information on tuberculin sensitivity and tuberculosis mortality has been used to
calculate the risk of tuberculous infection in Finland at different times and ages during the …