Did the General Board of Health make any scientific researches at the bedside to ascertain the connection which exists between epidemic diarrhoea & epidemic cholera : and were they the first to point out that cholera is invariably preceded by a diarrhoea for a few hours, or a few days, or for a few weeks, and that it is, consequently, in the power of human foresight to ward off an attack of cholera? : a letter addressed to John Simon, esq., F.R.S., Medical Officer to the General Board of Health / by David Macloughlin.

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Credit: Did the General Board of Health make any scientific researches at the bedside to ascertain the connection which exists between epidemic diarrhoea & epidemic cholera : and were they the first to point out that cholera is invariably preceded by a diarrhoea for a few hours, or a few days, or for a few weeks, and that it is, consequently, in the power of human foresight to ward off an attack of cholera? : a letter addressed to John Simon, esq., F.R.S., Medical Officer to the General Board of Health / by David Macloughlin. Source: Wellcome Collection.