Source: The Telegraph
Since 2003, highly resistant cases have been documented in Italy and Iran, mostly limited to impoverished areas and it has not spread widely.
The airborne disease is mainly transmitted through close personal contact and is not nearly as contagious as the flu.
The Indian hospital that saw the initial cases tested a dozen medicines and none of them worked, a pretty comprehensive assessment. A TB expert at the US Centres for Disease Control and Prevention said they do appear to be totally resistant to available drugs.
Ordinary TB is easily cured by taking antibiotics for six to nine months. However, if that treatment is interrupted or the dose is cut down, the stubborn bacteria battle back and mutate into a tougher strain that can no longer be killed by standard drugs. The disease becomes harder and more expensive to treat.