Handwashing in medical settings became mandatory long after Hungarian physician Ignaz Semmelweis discovered its effectiveness (in 1846) in preventing illnesses in hospital settings.
Kuosha mikono kimatibabu kukawa jambo la lazima muda mrefu baada ya mtaalamu kutoka Hungary, Ignaz Semmelweis kugundua ufanisi wake (mwaka wa 1846) katika kuzuia magonjwa katika mazingira ya hospitalini.