See the following links:
"Wheat Warning -- New Rust Could Spread Like Wildfire", Science News Online, 24 Sep 05
"Resistance to Eastern African Stem Rust Isolates with Broad Virulence in US and CIMMYT Wheat", USDA Cereal Disease Laboratory, 1 Jun 05
"Sounding the Alarm on Global Stem Rust", CIMMYT, 29 May 05 (pdf, 200 KB)