To Editor:— The editorial on turista, or the ( JAMA 180 :402 [May 5] 1962), reminds me of a statement made recently by a Mexican colleague which will come as a novel idea to average gringo . It is commonplace for representatives of tribe of Homo sapiens Californiensis to have a brief session of trots after a visit to resort areas below border. Our Mexican source reports that this is almost as common among his countrymen who visit California! It seems especially frequent in caballeros who visit Francisco, and traveler returned from The City sometimes refers to affliction as San Franciscitis. A further observation of interest is failure of sulfonamides plus antibiotics to exert any prophylactic effect. If one accepts commonly reported disparity in bacterial counts in drinking water in Baja California and in Golden State, several intriguing
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Ian Macdonald (1962) studied this question.