Eleven post offices remained closed Friday in Washington, D.C. after a routine air sample tested positive for anthrax. The air sample showed less than 1% of what it would take to be infectious, a Navy spokesman told the New York Times, news reports said. The facilities were closed out of caution while testing continued. Five workers were given Cipro, an antibiotic, as a precaution against the infectious
Eleven post offices remained closed Friday in Washington, D.C. after a routine air sample tested positive for anthrax.
The air sample showed less than 1% of what it would take to be infectious, a Navy spokesman told the New York Times, news reports said.
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The facilities were closed out of caution while testing continued.
Five workers were given Cipro, an antibiotic, as a precaution against the infectious disease. Anthrax can infect humans through the air or through the skin.
A month after the Sept. 11, 2001 attacks, anthrax-laced letters began appearing at post offices and media outlets. Five people died in incidents at that time.
