Fig. 4

Reduced median network of Mycobacterium tuberculosis genotypes, representing the current scenario of multidrug-resistant tuberculosis in Portugal and how these strains are phylogenetically related with the sensitive tuberculosis strains. The network displays 67 profiles of multidrug-resistance strains [17], 144 strains from the Northern region [18] and 56 strains with different levels of resistance [7]. Clusters detected in previous analyses and reported throughout the paper are highlighted