He didn't work with anthrax. He worked with viruses. Also, the original profile assumed the perp had valid anthrax innoculations. Hatfill pointed out he didn't. Saying he was taking Cipro (time uncertain), is a way around this fact...or is true. Which is interesting.
"...Nevertheless, I agreed to the FBI's request without hesitation. I also volunteered to have the FBI search my car and a small, unrefrigerated storage area in Florida where I keep some books, a few paintings and some other personal effects.
The FBI agents promised me that the search would be quiet, private and very low-key. It did not turn out that way.
Within minutes of my signing the release to have my residence and property searched, television cameras, satellite TV trucks, overhead helicopters were all swarming around my apartment block. The FBI agents arrived in a huge truck with hazardous-materials technicians fully garbed in protective space suits. In fact, I had previously helped train one of the FBI agents who searched my apartment..."