To the Editor:—
I noted in the "Questions and Answers" section of The Journal, March 4, 1961, page 832, in regard to diphtheria immunization, that Dr. Wallace E. Herrell stated that there was no need for continuing booster injections of diphtheria toxoids in adults. With the frequently recurring outbreaks of diphtheria in different urban localities, particularly among adults and nonimmunized children, it would appear that there is a need for continued adult protection. One way of providing for this is by means of "adult type" diphtheria tetanus toxoid which does not require Schick-testing before administration. (See Graham, B. S.; Blum, H. L.; and Green, T. W., JAMA166:1586-1588 [March 29] 1958).