11.   Officials still have ruled nothing out, including the possibility of a bioterrorism attack.

12.   Other experts say the chances of bioterrorism attacks are small.

13.   She says she wants to be prepared if a bioterrorism attack should occur.

14.   Since then, many public health experts and military planners have pressed for federal action to prepare the public health system for a bioterrorism attack.

15.   The anthrax cases also show that there is no early warning system that such a bioterrorism attack is under way, Neill said.

16.   The Centers for Disease Control and Prevention assumes that another bioterrorism attack will happen.

17.   The city Health Department has been monitoring the health of subway workers as an early-warning indicator of a possible broader bioterrorism attack.

18.   The county plans to buy two-way radios and install hotlines on which hospital ERs and public health workers can talk privately in a future bioterrorism attack.

19.   They point to the potential of future bioterrorism attacks in their arguments.

20.   Pharmaceutical experts also met Friday to improve protection against possible chemical and bioterrorism attacks.