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In Reply.—We thank Dr Bannatyne for pointing out our omission of his work on pertussis vaccine. Indeed, he did show in vitro neutralization of pertussis vaccine endotoxin activity with polymyxin B sulfate. The signs and symptoms of middle age include becoming more handsome, alopecia, presbyopia, and forgetfulness—but not thoughtlessness. I apologize for our oversight.
CORRIGAN JJ. Polymyxin and Pertussis-Reply. Am J Dis Child. 1984;138(12):1158. doi:10.1001/archpedi.1984.02140500062031