'Virtually untreatable' TB found

A "virtually untreatable" form of TB has emerged, according to the World Health Organization (WHO).

Extreme drug resistant TB (XDR TB) has been seen worldwide, including in the US, Eastern Europe and Africa, although Western Europe has had no cases.

Dr Paul Nunn, from the WHO, said a failure to correctly implement treatment strategies was to blame.

TB experts have convened in Johannesburg, South Africa, to discuss how to address the problem. the rest