Outbreak description
The SARS-CoV-2 Omicron variant outbreak in Lu’an City in April 2022 had reported 419 cases, including five individuals who did not live in Lu’an. The outbreak lasted for 20 days and was the largest outbreak of the COVID-19 epidemic ever recorded in Lu’an. A total of 358 individuals had been vaccinated with at least one of the COVID-19 vaccines, and 66 individuals have never received any of the COVID-19 vaccines.