A statement from the Postal Service noted the facilities were tested "only as precaution," adding, "There is no new threat to the mail system and to employees. It has been 10 months since the last anthrax-laden letter moved through the mail stream. There is currently no evidence that contamination is evident in these facilities."
When traces of anthrax spores are discovered, impacted areas are taken out of service, isolated and sanitized until testing is negative for the presence of anthrax.
"The New Jersey State Department of Public Health, CDC and OSHA do not believe that there is any type of health risk in these two sites," noted the Postal Service statement.
Calls to the Postal Service office in New York were not returned.