Five more newspaper employees in Florida have tested positive for exposure to Anthrax.
Those infected worked in the same office as the British born journalist who died from the virus last week.
It comes after a letter delivered to the offices of computer giant Microsoft in Nevada was found to contain some of the deadly spores.
The news caused panic in the US, where the NBC offices in New York have also been targeted.
The city's mayor Rudi Giuliani says people should not panic as it's only one case so far.