Okay, so viruses may not eat cities. Yet. But the viruses (and some bacteria) feverishing spreading through the pages of these books may consume more than just a city...they may eradicate mankind.
"The Cobra Event is the story of a secret counter-terror operation. It is set in motion one spring morning in New York City when a seventeen-year-old student wakes up feeling vaguely ill. She seems to be coming down with a cold. Hours later she is having violent seizures, blood is pouring out of her nose, and she has begun a hideous process of self-cannibalization. Soon, other gruesome deaths of a similar nature have been discovered, and the Centers for Disease Control in Atlanta sends a forensic pathologist. an expert in epidemiology, to investigate. What she finds precipitates a federal crisis.
"The details of this story are fictional, but they are based on a scrupulously thorough inquiry into the history of biological weapons and their use by civilian and military terrorists."
A US Army medical team converges on the Sumatran jungle camp of a missing American scientist, working feverishly to find the source of a deadly Ebola-like disease and to prevent its spread.
An intelligent microbe race that can live symbiotically in other intelligent beings is colonizing the human race throughout the civilized universe.