The purpose of the sociological study was to look at behaviour related to hygiene in some detail. Because of the difficulties of obtaining information about something as private as hygienic practices, the study could focus only on a few families, looking for descriptive qualitative, rather than quantitative, data - even in the few cases studied, there were severe limitations to what could be observed. This article describes what was observed, and relates it to some of the data collected in the microbiological study.
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