Published online by Cambridge University Press: 19 February 2018
Since the discovery that Bacillus coli vaccine (1) or albumose (2) were as effective as typhoid vaccine (3) in the treatment of typhoid fever, the use of non-specific protein therapy has been popular for almost any disease for which there is no other satisfactory form of treatment. T.A.B. vaccine, a mixture of typhoid and paratyphoid A and B organisms, has been found more regular and reliable in its results than typhoid vaccine (4); but milk, antitoxic sera, peptone and a variety of other substances have been used, and even malaria is considered a form of this treatment, segmentation of the parasites producing the foreign protein (5). It has been observed that Gram-negative organisms, such as the gonococcus and typhoid bacillus, produce more marked reactions when given intravenously than the Gram-positive organisms, such as staphylococci, streptococci and pneumococci (5).
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