The first cases of the coronavirus (COVID-19) were confirmed in Chengdu on January 21, 2020, after the virus spread from the initial outbreak in Wuhan. For several years, Chengdu followed China's strict "zero-COVID" policy, which involved mass testing, health code tracking, and periodic large-scale lockdowns, including a major lockdown in September 2022 that confined over 21 million residents to their homes. However, in December 2022, the Chinese government shifted its strategy and dismantled most domestic restrictions, leading to a significant surge in cases as the virus became endemic. While large-scale reporting of infection numbers has largely ceased and major lockdowns are no longer in effect, travelers to Chengdu may still encounter occasional medical screenings, such as temperature checks or testing requirements for certain events, and are generally advised to maintain personal hygiene and follow current local health guidelines.