Sri Lanka (then Ceylon) achieved near-elimination of malaria through the intensive use of DDT in the late 1940s and 1950s, reducing annual cases from millions to just seventeen in 1963. However, following the curtailment of DDT spraying in response to environmental concerns raised by Silent Spring and global pressure, malaria resurged dramatically, with over a million cases recorded in 1968–1969. The Sri Lanka experience became a pivotal case study in the tension between environmental protection and disease control, debated worldwide.

The Sri Lanka malaria reversal entered the global environmental and literary debate about the consequences of anti-DDT activism, with writers on both sides of the debate using the Sri Lankan example to argue about the competing claims of human health and ecological integrity. The episode illustrates how Rachel Carson's literary intervention — Silent Spring — had real, contested consequences for human beings living with malaria, and how the tension between environmental poetry's values and the needs of malaria-afflicted populations is a genuine literary and ethical challenge. Sri Lankan writers navigated this complexity in essays and verse of the post-colonial period.