translation.da: Fremkomsten af bakteriestammer, der er resistente over for de to mest effektive TB-midler, isoniazid og rifampicin (multi-drug resistant, MDR), såvel som over for andetvalgsantibiotika (extensively drug-resistant, XDR), er i dag en alvorlig udfordring for kontrollen med TB.
translation.en: The emergence of strains resistant to the two most effective anti-TB agents isoniazid and rifampicin (multi-drug resistant, MDR), as well as to other second line antibiotics (extensively drug-resistant, XDR), poses a serious challenge to TB control today.