If we think, for example, of Louis Pasteur, who in the 1860s was asked to study the diseases of silk worms for the silk industry, and his discoveries were really the beginning of the germ theory of disease.
Louis Pasteur w latach 60. XIX w. badał choroby jedwabników na potrzeby jedwabnictwa, ale jego odkrycia dały początek teorii chorób zakaźnych.