Not an uncommon practice, that the manufacturerer of a product will fund a publication that provides info about the target disease. The use of air guns in years past has been responsible for quite a number of point source outbreaks of Hep B and C. Even though there is no visible contamination there is microscopic contamination of the guns with blood and serum that can be infectious. One series report indicated that one specific air gun transmitted 150 cases of Hep B in an outbreak a number of years ago. Newer model air guns have disposable nozzles that are changed after each patient, thereby minimizing transmission. Two potential sources exist to explain the high rate of Hep C among Veterans.
Air guns are one.
Their use to mass immunize recruits was universal in the sixties and seventies. The other is the administration of Gamma Globulin as a preventive against HepB in the days before the Hep B vaccine. If the globulin was manufacturered from pooled plasma contaminated with Hep C, it could infect many of those who received it. Just one more legacy of the sixties. Of course the government will not admit it but they quit using air guns for innoculations in 1994.Hmmmmm, after the gulf war of course.