The Following recommendations are taken from the FBI Advisory and the US Postal Inspectors Offices:
What constitutes a "suspicious" parcel?
Some typical characteristics Postal Inspectors have detected over the years, which ought to trigger suspicion, include parcels that:
What should I do if I've received a suspicious parcel in the mail?
What Should I do if I Receive an Anthrax Threat by Mail?
What are signs and symptoms of the disease?
Anthrax is a disease caused by a type of bacteria called Bacillus anthraces.
The disease takes three distinct forms depending on how the germ enters the body: cutaneous (through a cut or scrape on the skin), inhalation (breathed in) and gastrointestinal (eaten). All forms of anthrax are quite rare in the U.S. But when one does occur, symptoms usually show up a day to a week after exposure. Here is a list of what these symptoms look like:
Cutaneous: Starts out with a bump like a mosquito bite, usually on the hand, but within a few days, it turns into a painless, open sore with a tell-tale black center of dead tissue.
Inhalation: At first, it feels like the common cold, but it can rapidly progress to severe pneumonia with difficulty breathing and shock. This form is usually fatal without treatment, but it is not contagious.
Gastrointestinal: Begins with loss of appetite, nausea, vomiting, and fever, and it progresses to vomiting of blood and severe diarrhea.