The potential threat of bioterrorism has increased paranoia about the possibility of contracting diseasesand threat of infection or contamination has driven some people to purchase gas masks, chemical suits and expensive antibiotics.

However, on at least one front, these preventive measures could do more harm than good, says a local physican.

"Taking prescription medications of any kind, but especially antibiotics, without a specific diagnosis is an extremely bad idea," said Dr. Sergio Segarra, director of emergency medicine at Sharon Regional Health System.

"While fears about anthrax and other diseases are understandable, the average American still has a greater chance of being killed in a car accident or hit by lightning than dying from anthrax, based on the exposure methods we're seeing in the news."

Segarra suggests people talk to their physicians any time they feel sick. The flu and pneumonia are more dangerous than anthrax this time of year. He also suggested getting a flu shot.

"By taking antibiotics as a preventive measure, people run the risk of limiting the effectiveness of those drugs later on if they need to be treated for a real illness," Segarra said. "Secondarily, if consumers are buying drugs on-line or crossing the borders to buy cheaper drugs, there is some risk with regard to quality control issues for the medications."

Segarra also suggests people follow the precautions the United States Postal Service has outlined with regard to opening strange packages. He also said to try to avoid jumping to conclusions about people and events they encounter.

Nevertheless, Segarra recommends people find out as much as they can about chemical and biological agents that could be introduced into the general population.

"As people explore this issue, I think they will see the threats, while real, can be limited as the government and other agencies increase their vigilance," he said.

More information on diseases like anthrax and the symptoms that accompany exposure to chemical agents can be found on the LaurusHealth Web site at www.sharonregional.com.