Abstract
To the Editor.— In my opinion,The Journal's reply to the recent inquiry by Peter H. Shershin, MD (242:1083, 1979), regarding prophylactic measures to be advised for a long-term resident of Mexico must be faulted for one significant omission, one half-truth, and one implication too startling to be accepted in the absence of corroboratory evidence. The omission is typhoid fever. Surely, no one who remembers the great outbreak that raged from 1972 to 1974, when more than 4,500 infections were diagnosed in only seven hospitals in the federal district, could fail to regard Mexico as an important focus of typhoid transmission.1Although that epidemic subsided some five years ago, there is no plausible ground for believing that endemic typhoid does not continue as a major public health problem south of the border. The Public Health Service Advisory Committee on Immunization Practices currently recommends typhoid vaccination for visitors to
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