The threat of bioterrorism is growing as more countries try to develop biological weapons, a CIA analyst told members of the Secretary of Health and Human Services’ Council on Public Health Preparedness. “Biological warfare is an attractive option . . . because it’s relatively inexpensive to develop,” said Kimberly Stergulz, an analyst at the CIA’s Weapons, Intelligence, Nonproliferation and Arms Control Center. A result, she said, is that countries such as Iraq, Iran, North Korea, Libya and Syria, and a growing number of non-state groups, are pursuing the capability. As reported by the Atlanta Journal Constitution, the CIA employee told the council that developing a biological weapons program could cost about $10 million, compared with $100 million to develop chemical weapon capability or $2 billion for nuclear capability. Stergulz presented the information at the first meeting of the council, a group of 21 health specialists and scientists who will advise the federal government on different aspects of potential public health emergencies.