Iraqi Biological Warfare (BW) Agents and Their Effects Filename:0pgv083.90p DIA/OICC 22 Oct 90 Background Paper for Under Secretary of Defense for Strategy and Resources SUBJECT: Iraqi Biological Warfare (BW) Agents and Their Effects 1. PURPOSE: To provide Mr. I. Lewis Libby with background information on the battlefield effects of Iraqi BW agents, potential use of BW by terrorists, immunization against BW, and availability and reliability of BW detection equipment. 2. POINTS OF MAJOR INTEREST: a. Tactical Use of BW: Iraq is assessed to have the BW agents anthrax and botulinum toxin. Iraqi weapon systems for BW delivery are unconfirmed, but could include bombs, spray tanks, artillery, or missiles. -The use of anthrax in a tactical battlefield situation is not likely due to the delayed onset of symptoms: 1 to 6 days for inhalation of anthrax spores. The first symptoms are nonspecific--fatigue and a mild fever, followed by a temporary recovery and then reversal to sudden development of respiratory distress. Death occurs within 24 hours after the onset of the second phase. Anthrax spores can live in the soil for decades, thus this agent is an excellent long term area denial weapon. -Botulinum toxin could be used as a tactical BW weapon when a delayed effect is required: onset of symptoms is 6-12 hours for inhalation of botulinum toxin. By the time botulinum toxin symptoms develop--about 12 hours after aerosol exposure--treatment has little chance of success. The agent affects the nervous system causing dizziness, dilated and nonreactive pupils, progressive muscular weakness, and death. -A major concern is the dissemination of botulinum toxin on a dust composed of silica or other materials which may penetrate clothing or masks and significantly increase the possibility of exposure on the battlefield. b. Strategic Use of BW: Iraq is more likely to use BW agents strategically. Delivery means could include aerosol generators, spray tanks, or possibly bombs or missiles. They could be used against civilian populations or rear troop concentrations, or as an aerial denial weapon against oil fields or other industrial or military targets. A strategic BW attack could result in large-scale fatalities and casualties. c. Terrorist Use of BW: BW agents could also be delivered by terrorist groups or by Iraqi clandestine services against military or civilian targets. Botulinum toxin and to a lesser degree, anthrax bacteria lend themselves to covert dissemination because even small amounts placed in water or food supplies are sufficient to kill large numbers of people. Saboteurs could contaminate water or food supplies near U.S. or other Western military encampments should hostilities appear imminent. BW delivery could also be accomplished by use of a truck, plane, helicopter, drone, or ship equipped with an aerosol generator to create a large toxic cloud upwind of the target. The difficulty in distinguishing between a naturally occurring epidemic and covert dissemination would provide sufficient cover for Iraq to use BW without suffering retaliation. d. BW Protection: Masks will probably offer sufficient protection against known aerolized BW agents. However, there is a possibility of re-aerolizing the agent if the mask is not completely decontaminated before being removed. Iraq may have the capability to deliver a BW agent bound to a dust-like carrier which could penetrate mask filters and permeable protective suits. Such an agent could work its way through the fabric of protective clothing and become imbedded in the skin. e. BW Prophylaxes: Effective vaccines for anthrax are available. Anthrax responds well to penicillin if the drug is given shortly after the onset of symptoms. Immunization to botulinum is possible but requires multiple injections of inactivated toxins over a period of several months. There are antisera to botulinum toxins, but they are effective only if administered before the onset of symptoms. f. BW Detection: Rapid field detection methods do not exist for anthrax or botulinum toxin. 3. EXPECTED DEVELOPMENTS: Iraq will continue to conduct research and development with BW agents and could expand to other infectious agents. Weaponization of BW agents will probably use many of the same techniques and equipment as chemical agents and will therefore be very difficult to detect. Iraq clearly has the capability to weaponize some agents now. COORDINATION: None. PREPARED BY: APPROVED BY: [ (b)(6) ]