The two would be the first among the recent anthrax cases who neither work for the government nor are connected to a media company.
Because anthrax cases are so rare in developed countries, much about it remains unknown.
In anthrax cases reviewed by the researchers that occurred before 2001, half the patients received no treatment.
The week after that, as other anthrax cases were identified, the numbers grew even faster.
And we all keep praying that there will be no new anthrax cases.
The precautions mark another ripple effect of the recent anthrax cases.
That letter had been considered the likely source of infection for all the anthrax cases in and around Washington.
Nearly half of Americans say the government is withholding information they need to know about the recent anthrax cases.
A bit of offsetting good news was that no new anthrax cases have been reported since Friday.
If the anthrax case is serious, the person will be hospitalized.