Tuberculin skin test reactivity of health care students in a country with a low prevalence of tuberculosis.

Setting: Health care students in Sweden.

Objective: To analyse the distribution of tuberculin skin test (TST) reactions and epidemiological factors related to TST reactivity.

Design: TST reactivity was analysed in 1190 students.

[Tuberculosis a threat again. Multiresistance in the Baltic States and in Russia; Nordic countries initiate cooperation to prevent transmission].

The incidence of tuberculosis (TB) has more than doubled in the Baltic States during the last decade and is now 10-15 times higher than in Sweden. It is also a serious problem in Russia. Strains resistant to one or several of the anti-tuberculous drugs are common as is multi-drug resistance (MDR), i.