Guest guest Posted December 25, 1998 Report Share Posted December 25, 1998 [image] ---------------------------------------------------------------------------- [The Anthrax Dilemma, by Victor W. Sidel, MD, Meryl Nass, MD, Tod Ensign, JD, LLM] " The potential risks to inoculated military personnel are still largely unknown... There is no reported experience with its use on a scale comparable to the inoculation of 2.4 million people. " [image] Abstract In December 1997 the Pentagon announced that all 2.4 million active duty military personnel and reservists would be inoculated with a vaccine against anthrax, a potential biological weapon. This program is questionable because of unknown efficacy of the vaccine, unknown risks to those who will be inoculated; coercion in the inoculation effort; and other ethical and policy reasons. New strains of anthrax may have been developed specifically to defeat the current vaccine. Previous immunization programs conducted by the Pentagon have been open to criticism. Researchers unaffiliated with the Pentagon should conduct further studies on the vaccine, and civilian public health agencies, including the Centers for Disease Control and Prevention and the National Institutes of Health should participate in design, testing, implementation, and oversight. A more effective way to deal with the threat of biological weapons is for the US to dismantle its nuclear capability, thereby removing an important incentive for other countries to develop alternative weapons of mass destruction. [M & GS 1998;5:97-104] 1 In October 1996 the Washington Post carried a front-page story about a plan being formulated by US military leaders to inoculate all members of the US armed forces with anthrax vaccine. The plan was developed, it was reported, because of the perceived risk of attack on US troops by weapons containing anthrax spores. In December 1997, despite public controversy about the inoculation program, the Pentagon announced that all 2.4 million active duty military personnel and reservists would be inoculated [1]. One of the first to be publicly inoculated was the Secretary of Defense, Cohen. Anthrax is a highly virulent disease of animals, especially ruminants, caused by Bacillus anthracis. When transmitted to humans, usually by contact with infected animals or their products, the disease can take one of three forms. Cutaneous anthrax, which has in the past been quite common among certain occupational groups such as farmers, wool-handlers and tanners, causes severe skin ulcerations and may be accompanied by myalgia, fever and vomiting. It is treatable by penicillin and other commonly-available antibiotics and is virtually never fatal if treated. Gastrointestinal anthrax is caused by ingestion of contaminated meat. It is now quite rare, but sporadic outbreaks have occurred in areas where the disease is endemic. Human infection occurs when a break in the pharyngeal or intestinal mucosa permits invasion of the intestinal wall; hemorrhagic necrosis and septicemia with a high mortality rate may follow. Inhalation anthrax, due to inhalation of anthrax spores, causes infection of the mediastinal lymph nodes with spread to the adjacent mediastinal structures. Pulmonary edema and pleural effusion with severe respiratory distress may develop, followed by cyanosis, shock, and coma. Even with intensive treatment, the outcome is usually fatal. Aerosol inhalation appears to be the pathway for human exposure preferred by those planning to use anthrax as a biologic weapon. Anthrax has long been considered a potential biologic weapon because anthrax spores remain infectious under a wide range of adverse conditions. The Japanese biologic warfare effort in Manchuria in the 1930s, the infamous Unit 731, developed weapons containing anthrax spores [2]. The United States and Britain stockpiled anthrax spores for use as biologic weapons during World War II and tested them on Gruinard Island off the coast of Scotland. The island remained off-limits to humans for 45 years after the test and remained so until formaldehyde treatment was used to decontaminate the soil. An anthrax epizootic in Zimbabwe in the late 1970s may have been caused by deliberate spread [3]. Anthrax spores are believed to have been stockpiled by Iraq and perhaps by other nations as well, although it is not clear whether these organisms were weaponized. The vaccine that the Pentagon is using is produced by one supplier, the Michigan Biologic Products Institute (MBPI) operated by Michigan’s Department of Health under contract to the Department of Defense. The vaccine was first developed during the 1950s, was reformulated in the 1960s, and was approved by the US Food and Drug Administration (FDA) for general use in 1970. It has been given to about 3,000 veterinarians, people who work with livestock or animal products, special ops troops, those involved with vaccine manufacture, and anthrax researchers. The vaccine regimen recommended for military personnel includes a series of six inoculations. The first three are given two weeks apart, followed by inoculations at six months, 12 months, and 18 months. A yearly booster inoculation is also recommended. This program appears to many observers to be questionable because of the unknown efficacy of the vaccine for the purpose for which it is being used, the unknown risks of the vaccine to the personnel who will be inoculated, the coercion being used in the inoculation effort, and a number of other ethical and policy reasons. Efficacy There is no good reason to believe that the MBPI vaccine will be effective in protecting troops against airborne infection with anthrax, the pathway that would most likely be used by biologic weapons. The only published human efficacy trial of an earlier anthrax vaccine was a study in the late 1950s and early 1960s in a mill that processed raw imported goat hair contaminated with Bacillus anthracis and in which clinical anthrax infections occurred [4]. Some protective value against cutaneous anthrax was noted, but there was an insufficient number of cases of inhalation anthrax to reach any conclusions about the efficacy of the vaccine in the prevention of inhalation anthrax. A controlled trial that involved purposeful exposure of humans to inhalation anthrax would obviously be unethical, but experiments have been done exposing monkeys and guinea pigs to inhalation anthrax [5,6]. These trials of the vaccine have yielded contradictory results. However, the only two Fort Detrick studies that studied vaccine efficacy against multiple anthrax strains isolated from around the world yielded similar results [7,8]. In the first study, 9 of 27 strains tested killed at least 50% of the vaccinated guinea pigs. In the second, 26 of 33 strains tested killed at least half the guinea pigs. When the Senate Veterans Affairs Committee examined the issue of efficacy and safety of the vaccine in 1995, it recommended that “the vaccine should be considered investigational when used as a protection against biologic warfare.” Further complicating the question of efficacy is the consideration that new strains of anthrax may have been developed specifically to defeat the current vaccine. It has been clear for some time that recombinant DNA technology may be used to alter agents that cause illness so that they are no longer as susceptible to vaccines or to antibiotics. Researchers in Russia disclosed in the British journal Vaccine in 1997 that they had genetically engineered a strain of anthrax that uses genes from Bacillus Cereus. The new strain is apparently able to overcome the protection offered by the Russian anthrax vaccine and it is therefore likely to be able to overcome the protection offered by the MBPI vaccine [9]. Recent analysis of tissue specimens from the bodies of victims of an explosion of a bioweapons factory in Sverdlovsk in the former Soviet Union in 1979 indicated that DNA sequences from four different strains of anthrax were present. These strains may have been selected to overcome the protection offered by vaccines against anthrax [10,11,12]. Ken Alibek, a Russian defector, has alleged that the USSR had prepared genetically-altered strains of anthrax in order to circumvent the use of vaccines against them [13]. Safety The potential risks to inoculated military personnel are still largely unknown. Sufficient small-scale testing of a similar vaccine convinced the FDA to license the current vaccine for use in protecting small numbers of at-risk workers [14]. But there are no published studies of the results of surveillance of vaccine recipients, and no data regarding long term side effects have been submitted to the FDA [15]. There is no reported experience with its use on a scale comparable to the inoculation of 2.4 million people. Experience with other vaccines that have been used widely after relatively small field trials indicates that unanticipated problems can develop in the course of massive use of approved drugs or vaccines. Furthermore, inspections by FDA of the MBPI have revealed unacceptable manufacturing practices. The FDA had sent the MBPI a warning letter in 1995 and threatened to revoke its license in 1997 [16]. An FDA report of an inspection in February 1998 made dozens of serious charges regarding compliance problems, including contamination of the vaccine, reuse of outdated vaccines, and relabeling of lots that originally failed in order to place them in use [17]. The MBPI is now closed for renovation, but the vaccine being used by the Pentagon was produced while the unacceptable conditions were in place. In May 1998 the Subcommittee on Human Resources of the Government Reform and Oversight Committee of the US House of Representatives began an investigation of the safety and efficacy of the MBPI vaccine and asked the US General Accounting Office (GAO) to conduct an independent probe. The GAO report is expected by the end of 1998. The Subcommittee is concerned that a 1987 Memorandum of Understanding (MOU) between the Department of Defense and the Food and Drug Administration may be restricting FDA’s oversight of the anthrax vaccine program. The Subcommittee Chairman asked the GAO to look into the extent to which the MOU might limit FDA review of the vaccine program; the extent to which claims regarding safety and efficacy of the vaccine are supported by data; and the extent to which problems identified by FDA at the MBPI could effect the safety and efficacy of the vaccine [18]. The Pentagon’s record of conducting immunization programs in the past does not inspire confidence. For example, the Presidential Advisory Committee on Gulf War Veterans’ Illnesses was sharply critical of the military’s poor record-keeping on immunizations during the Gulf War. More recently, it characterized the Pentagon’s efforts to improve its medical record keeping in Bosnia, where it used tick-borne encephalitis vaccine, as an “abysmal failure” [19,20]. Furthermore, the full House Committee on Government Reform and Oversight unanimously approved a report on November 7, 1997 that concluded, “DOD failure to adhere to record-keeping requirements [during the Gulf War] should result in the presumption of service connection for any subsequent illness to service personnel to whom the drug...was administered.” Closely related is the question whether the Pentagon conducted adequate record keeping and follow-up on the approximately 150,000 US troops who are reported to have received anthrax immunization during the Persian Gulf War. On September 8, 1991, just months after the Gulf War ended, the Army’s Medical Research and Development Command prepared their “Update on Medical Biological Defense Vaccine Program.” It proposed a follow-up study of a “unique pool of subjects” -- those troops who received anthrax immunization. If the military indeed conducted research on this population, such data have not been released publicly so that impartial analysts can review them. If the US military had placed the highest priority on the safety and efficacy of this vaccine, it would have started with placebo-controlled, carefully-monitored trials limited to troops who are willing to give free and informed consent to be guinea pigs in such an experiment. If the military has ever conducted such a trial, the results have not been reported in the open, peer-reviewed literature. Coercion Another issue in military use of the MBPI vaccine lies in the fact that troops were ordered to take the vaccine without first giving their free and informed consent. Several members of the US armed forces are known to have refused inoculation with the anthrax vaccine. As of April 20, 1998, 14 sailors aboard two ships in the Persian Gulf were being punished for refusing to permit the inoculation and two Air Force airmen have also refused the vaccine and were also disciplined. After one of the sailors, Nhut M. Nguyen, aboard the aircraft carrier USS. Independence, refused the vaccine, he was reduced in rank and was fined. He wrote to Navy Times that he was told that failure to have the inoculation could cost him his ability to receive US citizenship and could cause him to be thrown out of the Navy without any benefits. Nguyen wrote in one of his messages that many sailors are afraid of getting the vaccine but are even more frightened of the consequences of refusing [21]. The anthrax vaccine was also given to the roughly 300 members of the Canadian armed forces on the way to the Persian Gulf area [22]. The newspaper Stars & Stripes reported in March that a Canadian sergeant was facing disciplinary action for refusing an order to be vaccinated for anthrax [23]. The armed forces of the United Kingdom have also been offered anthrax immunization, but on a voluntary basis. Recent reports indicate that 73% of those offered the vaccine have refused to accept it [24]. A recent case indicates the length to which the US military has gone to insist that its troops accept the vaccine. US Army PFC Baker left his post at Fort , Georgia because, as he stated in a letter to the Surgeon General of the US Army, “I indicated my concerns about being given the anthrax vaccine and was told by my First Sergeant that if I refused to submit to an anthrax vaccine hypodermic shot, I would be strapped down to a gurney and would be forcibly injected against my will.” In his letter Baker requested that a Court of Inquiry be convened to investigate the anthrax vaccination program. While it is clear that individual civil rights may be constrained for those in military services and that international law has generally supported these constraints within certain bounds, it is not clear that a military service forcibly injecting its troops with a vaccine, whose safety and efficacy are in considerable dispute, would be considered lawful activity. Ethics and Policy In addition to the specific issues related to the use of the MBPI vaccine against anthrax, other risks in vaccine policies also loom large, such as the impact that use of vaccines for inoculation of troops will have on the control of biologic weapons. In 1996 some military officials were concerned, according to the Washington Post, “that word the United States is about to embark on a program to defend against anthrax might be misread as a sign Washington has a secret offensive capability or intends to develop one.” Seymour Hersh, has recently reported [25] that one of the reasons the US military was concerned about the threat of use of anthrax in the Persian Gulf was evidence that Iraqi troops may have been immunized against anthrax. According to Hersh, one of the pieces of evidence that convinced the US military that Iraq might be planning to use anthrax as a weapon in the Persian Gulf War was the discovery that Iraqi soldiers captured in a US covert operation had immunity against anthrax. Hersh writes that “an elite American Special Forces team, operating deep inside Iraq before the war, had kidnapped some Iraqi soldiers and determined, from blood samples, that they had recently built up an immunity to anthrax.... It was not clear whether the Iraqis had been inoculated with anthrax vaccine or had developed immunity to the disease, which occurs naturally in the animal population in some areas of Iraq. It didn’t matter. Military planning had to assume the worst--that the Iraqis would not be affected by a biologic attack.” In a world in which many nations are prepared to believe the worst about the military policies of other nations, information about immunization of the armed forces of a potential enemy may lead to destabilizing suspicions and unnecessary, costly, and risky countermeasures to possible bioattack. Action by the United States to immunize its troops is almost certain to persuade other nations to immunize theirs, thereby perpetuating a dangerous aspect of the biologic weapons race. There is also the long-recognized principle among planners of biologic weapons strategies that the surest way to cause a potential user to switch from biologic weapon A to biologic weapon B is to learn that the enemy’s troops are immunized against A. Moreover, immunizing troops with a vaccine that may be effective while leaving civilians unprotected comes dangerously close to a violation of the Geneva Conventions, in that such a policy specifically puts civilians at risk. Indeed, immunizing troops may convince another nation or group desperate enough to use biologic weapons that it should attack unprotected civilians instead, perhaps in a clandestine manner so the attack cannot be traced and retaliation initiated. One of the most important ethical problems arises if the vaccine is considered to be effective, but is actually not effective or has only limited effectiveness. Military commanders, believing the vaccine to be effective, may expose troops under their command to situations that might have been avoided if the misleading impression of protection had not been generated. Furthermore, the troops themselves, feeling themselves to be protected, may take risks they would not otherwise take. In recent months, another set of ethical issues has arisen because a number of publications have raised fears of bioterrorism. Many of these have been inaccurate and extremely alarmist. For example, a commentary in the Lancet suggested that inhalation anthrax was transmissible from an individual with the disease to others [26]. There is, however, no evidence that inhalation anthrax can be spread by person-to-person contact [27]. The fears caused by these reports have led to rehearsals for response to attacks on a series of US cities and proposals for stockpiling of vaccines and antibiotics. Hearings on the issue before a committee of the US Senate on June 2, 1998 included witnesses, however, who stated that US preparation for biologic defense is misguided because so much of the funding goes to the Pentagon instead of hospitals and doctors [28]. Among the issues raised were the question whether the funds spent on the drills and the stockpiling could be more effectively spent to prevent the consequences of bioterrorism by providing adequate public health measures, preventive medicine, and treatment for endemic illness to the population. Another issue that must be faced is that of conflict of interest. Profit-making from the immunization programs may influence military decisions. An analysis of the decision-making process that led to the awarding of contracts for stockpiling of vaccines to protect against bioterrorism led the New York Times to question conflict of interest among those participating in the decisions who stand to gain financially from a decision to stockpile the vaccines [29]. On July 7, 1998, the State of Michigan approved the sale of the MBPI to an investment firm headed by a former Chairman of the Joint Chiefs of Staff, Admiral J. Crowe, Jr., who was an important supporter of President Clinton in the 1992 Presidential campaign. The state of Michigan had earlier announced that it had accepted a 25 million dollar bid from the firm, Bioport, a subsidiary of the land-based corporation Intervac. The subsidiary is said to have been created specifically for investment in MBPI. Admiral Crowe, who served as Chairman of the Joint Chiefs under Reagan, and as Ambassador to the United Kingdom under Clinton, is a principal investor in Bioport. Crowe told United Press International that, “with the ongoing threat of biological attacks, sales of the anthrax vaccine could expand beyond the United States.” “We think the market is going to be pretty good,” he stated. It is also of interest that the details of the contract that the Pentagon signed with MBPI to supply anthrax vaccine for all US military personnel remains secret, although the New York Times reports that Admiral Crowe’s firm “now has an inside track on at least 60 million dollars in Pentagon contracts.” Furthermore, as weapons of mass destruction that are frequently described as “the poor nation’s nuclear weapons,” biological (and chemical) weapons cannot be considered in isolation from nuclear weapons. While both the Biological Weapons Convention and the Chemical Weapons Convention were negotiated and adopted without structural linkage to each other or to the treaties governing nuclear weapons, the ability to strengthen and enforce these agreements over the long term or, conversely, to prevent them from unravelling, depends upon embracing disarmament policies across the full range of weapons of mass destruction. Moreover, the incentives to develop, possess and, perhaps, use biological weapons and chemical weapons will remain strong as long as nations without nuclear arsenals perceive these weapons as equalizers of sorts. In short, the elimination of biological, chemical and nuclear weapons are, ultimately, essentially the same goal. Conclusion When facing this issue of vaccinating two-and-a-half million people in the short run, for reasons of safety, efficacy, and public concerns over the massive scope and potential risk of this program, the interests of military personnel as well as the public would be better served if researchers unaffiliated with the Pentagon were permitted to conduct further studies on the vaccine. The Pentagon should invite major civilian US public health agencies, including the Centers for Disease Control and Prevention and the National Institutes of Health and major non-governmental organizations such as the American Public Health Association, to participate actively in the design, testing, implementation, and oversight of this plan. It would be tragic if these agencies were only brought in later, as was done with nuclear bomb-test fallout and Agent Orange to write a post-mortem analysis. In the longer term, in responding to the profound policy concerns raised by the continuing threat of biologic and chemical weapons, the US and the other nuclear powers must recognize their obligations to move toward the elimination of nuclear weapons. If the United States wishes to protect its troops against biologic weapons, the best method would be to join in negotiating a Nuclear Weapons Convention and, in accordance with it, to dismantle the US nuclear capability. Only then will it be possible for all nations to enjoy effective protection against weapons of mass destruction. Overall, there is little evidence that vaccines are an effective or ethical solution to the threat of biologic weapons. References 1. Myers SL. US armed forces to be vaccinated against anthrax. New York Times, December 16, 1997:A1,A22. [Return to text] 2. P, Wallace D. Unit 731: The Japanese Army’s Secret of Secrets. New York: The Free Press. 1989. [Return to text] 3. Nass M. Anthrax epizootic in Zimbabwe, 1978-1980: Due to deliberate spread? PSR Quarterly 1992;2:198-209. [Return to text] 4. Brachman PS, Gold H, Plotkin SA, et al. Field evaluation of a human anthrax vaccine. Am J Public Health 1962;56:632-645. [Return to text] 5. Ivins B, Fellows P, Pitt L, et al. Experimental anthrax vaccines: Efficacy of adjuvants combined with protective antigen against an aerosol bacillus anthracis spore challenge in guinea pigs. Vaccine 1995;13:1779-1784. [Return to text] 6. Turnbull PCB. Anthrax vaccines: past, present, and future. Vaccine 1991;9:533-539. [Return to text] 7. Fellows P, Linscott M, Ivins B. Anthrax vaccine efficacy against B.anthracis strains of diverse geographical origin. Paper presented at 3rd International Anthrax Workshop, Plymouth, England, September 9, 1998. [Return to text] 8. Little SF, Knudsen GB. Comparative efficacy of Bacillus anthracis live spore vaccine and protective antigen vaccine against anthrax in the guinea pig. Infection and Immunity 1986;52: 509-12. [Return to text] 9. Pomerantsev AF, Staritsin NA, Mockov YV, in LI. Expression of cerolysine ab genes in bacillus anthracis vaccine strain ensures protection against experimental hemolytic anthrax infection. Vaccine 1997;15:1846-1850. [Return to text] 10. PJ. Proceedings of the National Academy of Sciences. Washington, DC: NAS. February 3, 1998. [Return to text] 11. Wade N. Anthrax findings fuel worry on vaccine. New York Times, February 3, 1998:A6. [Return to text] 12. Wade N. Tests with anthrax raise fears that American vaccine can be defeated. New York Times. March 26, 1998:A24. [Return to text] 13. Preston R. The bioweaponers. The New Yorker. March 9, 1998:52-65. [Return to text] 14. Brachman PS, Friedlander AM. Anthrax. In: Plotkin SA, Mortimer EA (eds). Vaccines, 2nd ed. Philadelphia: W.B. Saunders. 1994. [Return to text] 15. Zoon KC. (Director, Center for Biologics Evaluation and Research, US Food and Drug Administration). Letter to G. Eddington (Director, Veterans for Integrity in Government). April 28, 1998. [Return to text] 16. Zoon KC (Director, Center for Biologics Evaluation and Research, US Food and Drug Administration). Letter to Myers (Head, Michigan Biologic Products Institute). March 11, 1997. (Obtained by authors from FDA through Freedom of Information Act request.) [Return to text] 17. Inspectional Observations. Inspection of Michigan Biologic Products Institute. Washington, DC: US Food and Drug Administration. February 20, 1998. [Return to text] 18. Congress probes safety/efficacy of anthrax vaccine, seeks GAO help. FDA Week Vol. 4, No. 30, July 24, 1998. [Return to text] 19. Presidential Advisory Committee on Gulf War Veterans' Illnesses. Special Report. October 31, 1997. Washington, DC: US Government Printing Office, 1997. [Return to text] 20. Sloat B, Epstein K. Army misled troops who got vaccine in Bosnia. Plain Dealer (Cleveland, Ohio), January 25, 1998:1A,18A. [Return to text] 21. Ginburg Y. Sailors refuse vaccine. Navy Times, April 20, 1998:3. [Return to text] 22. Godkin P. Canadians off to gulf get controversial vaccine. Toronto Star, February 21, 1998:A16. [Return to text] 23. Canada moves soldier who refused anthrax vaccine, Winnipeg paper says. Stars & Stripes, March 30, 1998. [Return to text] 24. Gilligan A. British troops " mutiny " over Gulf anthrax jab. The Sunday Telegraph. June 7, 1998. [Return to text] 25. Hersh S. Against All Enemies: Gulf War Syndrome: The War Between Americas Ailing Veterans and Their Government. New York: Ballantine Books. 1998. [Return to text] 26. Wise R. Bioterrorism: Thinking the unthinkable. Lancet, 1998;351:1378. [Return to text] 27. Nass M. Biological Warfare. Lancet. 1998;352:491-492. [Return to text] 28. J. US unprepared for bioterrorism, experts say. New York Times, June 3, 1998. [Return to text] 29. Broad WJ, J. Germ defense plan in peril as its flaws are revealed. New York Times. August 7, 1998:A1,A16. [Return to text] About the Authors * VWS is Distinguished University Professor of Social Medicine at Montefiore Medical Center and the Albert Einstein College of Medicine. He is Co-President of the International Physicians for the Prevention of Nuclear War. * MN is an emergency physician at Parkview Hospital, Brunswick, Maine. She has investigated and written widely on issues of anthrax, vaccines, and biological warfare. * TE is a lawyer and Director of Citizen Soldier, a non-profit GI/veteran’s rights advocacy organization based in New York City. Address correspondence to Victor W. Sidel, M.D., Montefiore Medical Center, 111 East 210th Street, Bronx, New York 10467 USA; e-mail: vsidel@.... © copyright 1998 Medicine and Global Survival -- Meryl Nass, M.D. Parkview Hospital, Brunswick, Maine 04011 email mnass@... phone (207) 865-0875 fax (207) 865-6975 Quote Link to comment Share on other sites More sharing options...
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