Shortly after the Northern Ireland hemorrhagic virus was released in 2033 the Irish government created a series of artificial barriers that entirely surrounded the city of Dublin to prevent the spread of the virus into the city. Checkpoints were established and only designate citizens and residents of the city were allowed in. In 2034 the city government of Dublin declared that anyone who lived in the city need to have citizenship papers proving they were born in the city. The city completely isolated itself and got shipments of food that were heavily inspected. A series of greenhouses and artificial meat production factories were also established to make the city entirely self-sufficient. The city was largely cut off from the rest of Ireland until 2045 when the outbreak of the virus ceased to exist. However the city continued to be an independent republic until the government of Ireland was reestablished in 2099.