Incidence of tuberculosis and distribution of birth-year of patients from where the current <i>M. tuberculosis</i> strains originated.

<p>The incidence of pulmonary tuberculosis in Norway 1910–1990 (dotted line) is presented in a logarithmic scale (left axis). The distribution of year of birth of the patients from whom the current <i>M. tuberculosis</i> population had been isolated during 1998–2008 (solid line) is given in percent (right axis).</p

<i>M. tuberculosis</i> families identified in cases of reactivated disease among patients born in Norway before 1950.

<p><i>M. tuberculosis</i> families identified in cases of reactivated disease among patients born in Norway before 1950.</p

Diversity and RFLP patterns observed among <i>M. tuberculosis</i> strains, sex, and year of birth of patients from whom these were isolated.

<p>Genetic diversity and IS<i>6110</i>- RFLP patterns of the isolates assigned to the Haarlem- family from patients born in Norway 1910–1950.</p

Diversity and RFLP patterns observed among <i>M. tuberculosis</i> strains, sex, and year of birth of patients from whom these were isolated.

<p>Genetic diversity and IS<i>6110</i>- RFLP patterns of the isolates assigned to the T- family from patients born in Norway 1910-1950.</p