The population has 'swelled/swollen' in recent years.
a 'swollen' ankle/gland
a 'swollen' river
(..) with the plaque of the st century. Remember mad cow disease? Well 'Mad cow' became 'mad person' became 'mad zombie'. It's a fast acting virus, that left you with a swollen brain, raging fever and make you hateful, violent. And give you really really bad case of the munchies Okay. (..)2009 Zombieland