Writing under the pseudonymMira Grant, she published the political thriller/zombie trilogy Newsflesh including the books Feed, Deadline and Blackout. Blackout received a 2013 Hugo Award nomination for Best Novel. That year McGuire received a record five Hugo nominations in total, two for works as Grant and the other three under her own name.
The newest Mira Grant novel, called Parasite, has been published on October 29, 2013.  It is the first volume of the series entitled Parasitology.
"Everglades" in The Living Dead 2 (as Mira Grant, September 2010)
"Gimme a 'Z'!" in Zombiesque (February 2011)
"Alchemy and Alcohol" in After Hours: Tales from the Ur-Bar (March 2011)
"Through This House" in Home Improvement: Undead Edition (August 2011)
"Riddles" in Human Tales (September 2011)
"Cinderella City" in Human for a Day (November 2011)
"Crystal Halloway and the Forgotten Passage" in Lightspeed Magazine (December 2011)
"We Will Not Be Undersold!" in The Modern Fae's Guide to Surviving Humanity (December 2011)
"The Flower of Arizona" in Westward Weird (February 2012)
"Rat-Catcher" in A Fantasy Medley 2 (December 2012)
"Laughter at the Academy: A Study in the Development of Scizotypal Creative Genius Personality Disorder (SCGPD)" in The Mad Scientist's Guide to World Domination (January 2013)
"Emeralds to Emeralds, Dust to Dust" in Oz Reimagined (February 2013)
McGuire has published novellas directly through Orbit Books under the Mira Grant byline. All have thus far centered on her previously established Newsflesh continuity.
"Countdown" (June 2011)
"San Diego 2014: The Last Stand of the California Browncoats" (July 2012)
"Apocalypse Scenario #683: The Box" (November 2012)
"How Green This Land, How Blue This Sea" (July 2013)
Sparrow Hill Road
In 2010, McGuire wrote a series of linked stories for The Edge of Propinquity, an online magazine. During this time, she was billed as a "universe author." The Sparrow Hill series focused on Rose Marshall, a hitchhiking ghost seeking revenge on the man originally responsible for her death.
In 2010, McGuire's novel Feed (written under the pseudonym Mira Grant) ranked #74 in an National Public Radio listener poll of the top 100 Thriller novels of all time.Feed was also selected by Publishers Weekly as one of their Best Books of 2010. It was nominated for the 2011 Shirley Jackson Award, as well as the 2011 Hugo Award for Best Novel. Its sequel, Deadline, was also nominated for the 2012 Hugo Award for Best Novel. The stand-alone Newsflesh story Countdown was nominated for the 2012 Best Novella Hugo. Her filk album Wicked Girls was nominated for the 2012 Best Related Work Hugo. The SF Squeecast, a podcast to which she contributes, won the 2012 Hugo for best fancast.
McGuire was the 2012 inductee into the 2012 Darrell Awards Hall of Fame for her contributions to Mid-south science fiction.
SF Squeecast won the 2013 Hugo Award for Best Fancast, its second Hugo. Blackout received a 2013 Hugo nomination for Best Novel. In addition, McGuire received three other nominations (a record five nominations in a single year): best novella (as Grant) and twice for best novelette (both as McGuire).