The idea of "contagion", as explaining the spread of disease, appears to have been adopted at a time when, from the neglect of sanitary arrangements, epidemics attacked whole masses of people, and when men had ceased to consider that nature had any laws for her guidance. 2019-04-23T22:21:13-07:00 Although the connection between germ and disease was proposed quite early, it was not until the late-1800s that the germ theory was generally accepted. Services, The Germ Theory of Disease: Definition & Louis Pasteur, Working Scholars® Bringing Tuition-Free College to the Community. Hence, development in the damp and sultry south was much slower than in the north, where the dynasties' political power resided for much of early Chinese history. endobj [13], The concept of miasma developed in several stages. Miasmas explained why cholera and other diseases were epidemic in places where the water was stagnant and foul-smelling. Lethal agents traveled by air, they thought, not lodged beneath a doctor's fingernail. The miasma theory was consistent with the observation that disease was associated with poor sanitation, and hence foul odours, and that sanitary improvements reduced disease. "USA." miasma theory is typically associated with the spread of contagious diseases, some academics in the early nineteenth century suggested that the theory extended to The word miasma comes from ancient Greek and means "pollution". This slowed the response to the major outbreaks in the Soho district of London and other areas. During the Great Plague of 1665, doctors wore masks filled with sweet-smelling flowers to keep out the poisonous miasmas. The miasma theory of disease originated in the Middle Ages and persisted for centuries. [25] Their efforts, and associated British regulatory improvements, were reported in the United States as early as 1865. The idea also gave rise to the name malaria (literally "bad air") through medieval Italian. He discovered the pathology of the puerperal fever[36] and the pyogenic vibrio in the blood, and suggested using boric acid to kill these microorganisms before and after confinement. n��x �x�mͤ*�v.�Z�O�ql��$|�E�]jg�HU�Hr�q��3/�T%��'�����ì�T�~��H0`Ҽj�;�i�hO�5�� �"|�� ��Lr����Of�s��c���ñ,�gO��Z�Tlt���|� ����\ű�+��Ue��knBH\�xf��W�Tq�3dޱ3cr�d�\Zkgf{�훬��ų�o÷O#�I�l�H�-O܍���ק��:����k?c�����N�Jѫ8����$��_,�a�|��i�(�4B�������zB�. The miasma theory (also called the miasmatic theory) is an obsolete medical theory that held diseases—such as cholera, chlamydia, or the Black Death—were caused by a miasma (μίασμα, ancient Greek: "pollution"), a noxious form of "bad air", also known as night air.The theory held that the origin of epidemics was due to a miasma, emanating from rotting organic matter.