During the 1894 Hong Kong plague outbreak, researchers identified the bacterium Yersinia pestis, which clarified the microbial cause of plague. This discovery was pivotal in understanding infectious diseases and led to improved public health responses to epidemics. The identification of the plague bacillus not only advanced microbiology but also underscored the importance of scientific research in combating public health crises.

The identification of the plague bacillus reframed the narrative of disease in literature, moving from divine punishment to a scientific understanding. This shift allowed poets to explore themes of mortality and societal response to crisis in a more nuanced manner.