The germ theory of disease refers to the discovery in the late 19th century that some infectious diseases are caused by microorganisms, small organisms too small to see without magnification, that invade the host. The theory supplanted earlier explanations for disease such as miasma theory.
Read more about Germ Theory Of Disease: History, Sanitation
Famous quotes containing the words germ, theory and/or disease:
“I care not by what measure you end the war. If you allow one single germ, one single seed of slavery to remain in the soil of America, whatever may be your object, depend upon it, as true as effect follows cause, that germ will spring up, that noxious weed will thrive, and again stifle the growth, wither the leaves, blast the flowers, and poison the fair fruits of freedom. Slavery and freedom cannot exist together.”
—Ernestine L. Rose (1810–1892)
“Osteopath—One who argues that all human ills are caused by the pressure of hard bone upon soft tissue. The proof of his theory is to be found in the heads of those who believe it.”
—H.L. (Henry Lewis)
“I prithee, daughter, do not make me mad.
I will not trouble thee, my child; farewell:
We’ll no more meet, no more see one another.
But yet thou art my flesh, my blood, my daughter—
Or rather a disease that’s in my flesh,
Which I must needs call mine.”
—William Shakespeare (1564–1616)