What does the author mean by “the virlunce of poverty”

What does the author mean by “the virlunce of poverty”

using the story by mike davis the monster at our door chapters 2 chapters 8 chapter 9,11,12 and the article https://www.theguardian.com/commentisfree/2016/aug/24/climate-change-thawing-deadly-diseases-anthrax