But Argentine authorities say the news set off a "very important panic," as elections were canceled, security forces scrambled to cover border crossings and people rushed to get antibiotics. The bulk mailing was from Ramada Plaza Resorts, which sells vacation vouchers for three-day cruises, stays in Fort Lauderdale and trips to Orlando. At least 600 homes received the brochure in the Argentina neighborhood where the infected letter was sent.
Meanwhile, other previously reported possible anthrax findings have been cast into question.
A Brazilian laboratory said a letter sent to the Rio de Janeiro bureau of The New York Times had tested negative for anthrax. The Times had announced Friday that the suspect letter tested positive for "bacteria or spores consistent with anthrax."
According to Reuters, the Fiocruz laboratory said the letter, turned over by Times employees to Brazilian authorities Thursday, contained no powder and no traces of harmful germs.
And in New York City, most environmental tests in the Manhattan office of New York Governor George Pataki have been negative for anthrax after a preliminary test on Wednesday suggested its presence, New York state health officials told the Associated Press.