At first glance, the solemn editorial in the A.M.A. Journal seemed a generation out of date. Why worry about salmonellosis? This form of food poisoning can be prevented by standard modern methods of hygienic food handling, by common kitchen cleanliness, by proper cooking and by ordinary household refrigeration. But the A.M.A. was worried—and with reason. In the last 20 years, despite modern kitchens the reported cases of salmonellosis have increased tenfold, and so far this year there have been 13,500 cases, a rate that is an ominous 69% above the 1963 level.
The Salmonella* bacillus has no fewer than 800 strains, most...