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To the Editor:—
The article entitled "Active Immunization with Meningococcus Toxin" by Ferry and Steele, published in The Journal, March 23, has provoked requests for this toxin to be used for active immunization against meningococcic meningitis. It was not the intention of the authors to convey the impression that this toxin is available for distribution or that proof of active protection against the disease had been established. In fact, in the body of the paper the latter phase of the problem is covered in the statement "While the results of these tests indicate certain facts in regard to the stimulation of active immunity in man against meningococcus toxin, they do not necessarily signify that an immunity against the organism can be produced at the same time."
Ferry NS, Steele AH. MENINGOCOCCUS TOXIN. JAMA. 1935;104(26):2384. doi:10.1001/jama.1935.02760260072024