Laurie McCannon, director of the Northeast Animal Shelter in Salem, Mass., with a dog named Trina. Three-quarters of the dogs adopted from the shelter in 2013 were from out of state.
Shannon Mullen for NPR
Last fall's state-ordered quarantine of nurse Kaci Hickox (shown here with her boyfriend, Theodore Michael Wilbur, in late October) started at the airport in Newark, N.J., then followed her home to Fort Kent, Maine. Hickox treated Ebola patients in Africa but never had the illness.
Spencer Platt/Getty Images