The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic has wreaked havoc on millions of people around the world. Although China quickly brought the Coronavirus disease (COVID-19) under control, there have been several sporadic outbreaks in different regions of China since June 2020. This article described the chronological nosocomial COVID-19 infection events related to several sporadic outbreaks of SARS-CoV-2 in different regions of China. We have reported epidemiological characteristics and management measures of sporadic nosocomial COVID-19 infections from June 2020 to June 2021 and specially focused on the domestic COVID-19 breakthrough infection in China, such as domestic COVID-19 breakthrough infection—a vaccinated healthcare professional working in the isolation ward of a designated COVID-19 hospital.
【저자키워드】 Asymptomatic carrier, COVID-19 disease, Nosocomial infection, scientific protective strategy, vaccine breakthrough infection, 【초록키워드】 COVID-19, SARS-CoV-2, coronavirus, pandemic, hospital, Infection, China, Region, Characteristics, outbreak, management, Isolation, epidemiological, Breakthrough infection, disease, Healthcare professional, acute respiratory syndrome, measure, nosocomial COVID-19, event, described, reported, 【제목키워드】 COVID-19,