California

California was a United States state and the most populous state. After its social and economic collapse in 2021, California was nicknamed by survivors as "Califallia" due to being the first state to collapse in the West. It was a primary location for the spinoff series, The First Survivors, featuring the status of Saint Catalina Island, San Diego and La Jolla during the initial outbreak of the virus.

Post-apocalypse
California did not see its first known case until April 2021, although its been hinted that the virus first arrived in February 2021. Los Angeles was the main area of internet rumors of the 'undead virus' reaching Suburban LA, but due to unknown information about the virus, many regarded it as reports of insanity or people posing for fame.

By May 2021, the state had seen around 150,000 cases and over 5,000 found deaths with most centered at Los Angeles and San Francisco. The state was cut from power and electricity by early June 2021 and the state collapsed after over 50% of the population were undead/dead by August 2021. Major cities across the state were firebombed during July 2021-October 2021 in an effort to re-establish the state.

Saint Catalina Island
Saint Catalina Island initially saw no cases until an elderly couple were bitten by a washed-up walker from Los Angeles in May 2021. From there, the island saw an increasing rise of cases until they were forcibly stopped by survivors. Around 60% of the population were dead by the end of the outbreak and fences were placed around the coastline of the island. This fast increase confirmed how quick it was to spread in a community.

La Jolla
Due to La Jolla's low population, the virus moved much slower in the city compared to other Californian cities. Nevertheless, much of the city's residences had abandoned the city after Los Angeles and San Diego's outbreaks in May-June 2021. Those who stayed became paranoid and blockaded their houses. Much of the grocery stores in the city were already raided by late May and other stores were left abandoned by their own keepers.