2055 - The West Tek Research Facility starts working on a new virus to kill the New Plague. Their viral research and close ties to the federal government eventually lead to them being chosen for the Pan-Immunity Virion Project twenty years later as well as Power Infantry Armor and laser research. - Fallout Wiki Timeline
FEV did, however, with radiation would effect the creatures that would still be alive, which give you giant ants or mole rats.
New Plague or Limit 115 is a socially transmitted plague which arose in 2053, killing approximately twenty thousand human beings in the United States, including cities such as Denver, Boulder, and Colorado Springs. The United States closed its borders and the first-ever national quarantine was declared. The source of the plague is unknown, but rumors persisted that it was a genetically engineered weapon. - Fallout Wiki Timeline
FEV did, however, with radiation would effect the creatures that would still be alive, which give you giant ants or mole rats.
New Plague or Limit 115 is a socially transmitted plague which arose in 2053, killing approximately twenty thousand human beings in the United States, including cities such as Denver, Boulder, and Colorado Springs. The United States closed its borders and the first-ever national quarantine was declared. The source of the plague is unknown, but rumors persisted that it was a genetically engineered weapon. - Fallout Wiki Timeline
Hmm, so it did, been a while. I stand corrected, said the man in the orthopedic shoes.
I think you'll agree that whilst giant creatures trying to kill you isn't a barrel of laughts, Super Mutants & Centaurs kidnapping you is the icing on a very unpleasant cake.