Analyst's note:  The destructive Stuxnet worm has surprised experts around the world --  including the United States -- because it is the first one specifically created to take over industrial supervisory control and data acquisition (SCADA) software , thus causing actual industrial physical destruction,  rather than just steal or manipulate data.  I highly recommend a search inside CSIA Report on "SCADA" for additional insight. 

"[....] The project manager at the Bushehr nuclear plant, Mahmoud Jafari, said a team is trying to remove the malware from several affected computers, though it "has not caused any damage to major systems of the plant," the IRNA news agency reported.

[....] The infection of several computers belonging to workers at Bushehr will not affect plans to bring the plant online in October, Jafari was quoted as saying.

[....]  The United States is also tracking the worm, and the Department of Homeland Security is building specialized teams that can respond quickly to cyber emergencies at industrial facilities across the country.

On Saturday, Iran's semi-official ISNA news agency reported that the malware had spread throughout Iran, but did not name specific sites affected."