anthrax

I will like to have any information on GI entry port for Anthrax. I read the CDC.gov page on antrax and I am worry. I don't want to be alarmed,but Iam concerned. I have seen 4 cases of n/v and diarrhea in the last week. Majority of physicians do not even know the s/s of GI anthrax. I made a copy of the CDC article for them. Any input regarding GI anthrax contamination? Should we start testing this kind of cases for anthrax in hospitals and clinics?
Are we safe ? Is any one seen this cases or testing for it ?