The phrase "rampant disease" refers to a situation where a disease is spreading quickly and widely, affecting a large number of people or animals. Full definition
DOES the threat of rampant disease leave people more likely to commit murder? (newscientist.com)
We become witnesses to the extremity of their daily suffering — the repeated cycles of malnutrition, rampant disease due to poor hygienic conditions, and lower survival rates due to female infanticide, anemia and maternal mortality. (religion-online.org)
Ignorance and intolerance begin at Church and are brought home like rampant disease and spread about the family and community. (religion.blogs.cnn.com)