"..non-DoD studies suggest the anthrax vaccine was a contributor to Gulf War illnesses, and a cause of multiple chronic medical problems. These studies include one by Unwin et al., which found British anthrax vaccinations to have increased the risk of chronic Gulf War illnesses by 50% in Gulf War veterans, and by  230% in a small cohort of vaccinated Bosnia veterans. [22]  The Canadian Department of National Defense hired a contractor to investigate Gulf War exposures and subsequent illnesses. Anthrax vaccine recipients had a 92% greater chance of developing chronic fatigue than unvaccinated veterans. [23]