"Yes, and civilization is sterilization," Bernard went on, concluding on a tone of irony the second hypnopaedic lesson in elementary hygiene.
Self-indulgence up to the very limits imposed by hygiene and economics.
Above them, in ten successive layers of dormitory, the little boys and girls who were still young enough to need an afternoon sleep were as busy as every one else, though they did not know it, listening unconsciously to hypnopaedic lessons in hygiene and sociability, in class-consciousness and the toddler’s love-life.
There are no more uses of "hygiene" in the book.
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Many illnesses, especially diarrhea, can be prevented by good hygiene.
The company inspects hygiene at food-processing plants.