<p>A course of treatment for uncomplicated tuberculosis takes a minimum of six months. When patients are resistant to the two most powerful first-line antibiotics (isoniazid and rifampicin), they are considered to have multidrug-resistant TB (MDR-TB).</p>
<p>Extensively drug-resistant tuberculosis (XDR-TB) is identified when patients show resistance to the second-line drugs administered for MDR-TB. The treatment options for XDR-TB are very limited. Two new drugs &ndash; bedaquiline and delamanid &ndash; have recently become available to some patients who have no other treatment options left.</p>
<p>For more information, please see <a href="https://www.msf.org/en/diseases/tuberculosis">tuberculosis</a>.</p&gt;