The Great Plague of London outbreak in 1563 was a highly lethal epidemic of bubonic plague that struck Elizabethan London, killing over 20,000 residents. This outbreak disrupted civic operations and instilled fear within the population, leading to significant social and economic consequences. The Great Plague underscored the vulnerabilities of urban centers to infectious diseases and influenced public health responses in subsequent outbreaks.

The Great Plague of London led to the isolation of writers, profoundly impacting the development of private sonnet sequences. This period of solitude fostered introspection and darker themes in Elizabethan literature, shaping the evolution of morality plays and influencing the works of poets like John Milton.