New challenges are also posed by multi-drug resistant tuberculosis (MDR-TB) and even extensively drug resistant TB (XDR-TB), which is practically untreatable.
TB is definitely a worldwide threat. Though most of the cases are detected in Asia, Africa, and Latin America, the importation of TB, including MDR-TB, from Eastern Europe and other countries to the EU is a serious concern for the European Union. In addition TB is also present in Northern America.