PubMed · 16669359
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Allyson Lipp. 2006. Evidence-based measures.. https://pubmed.ncbi.nlm.nih.gov/16669359/
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In 1860 the institutions of the former Society of Welfare in Veenhuizen, the Netherlands, which had been taken over by the state, were struck by a mysterious eye disease. More than 5000 orphans and former beggars lived and worked in these institutions. The Minister of the Interior ordered an inquiry by the ophthalmologist Herman Snellen (1834-1908). He reported that the inmates slept in close proximity to one another and had to share dishes and towels. There was no clean water for washing or drinking. 788 (15%) people were found to be suffering from trachoma. On Snellen's advice, a start on improving the standards of hygiene was made but no more was done. The real reduction in prevalence came around 1900 and was probably connected with a reduction of the number of inmates and improvements in hygiene.
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