Mezue ahịrịokwu a:
Ọrịa ọgbụgba ọgbụgba nke 1854 bụ ọrịa ọgbụgba siri ike nke ọgbụgba nke mere na 1854 na nso Broad Street (ugbu a Broadwick Street) na mpaghara Soho nke London, England, wee mee n'oge ọrịa ọgbụgba nke atọ. Ọrịa a, nke gburu mmadụ 616, bụ nke a kasị mara amara n'ihi ọmụmụ nke dọkịta bụ́ John Snow mere banyere ihe ndị na-akpata ya na echiche ya bụ́ na mmiri nje na-emetọ bụ isi iyi nke ọrịa ọgbụgbọ na ọnyà, kama ịbụ ụmụ irighiri ihe ndị dị n'ikuku (nke a na-akpọ "miasma").