Elsevier established a free COVID-19 resource center in January 2020, offering information in English and Mandarin. The center grants free access to its research in PubMed Central and other repositories for unrestricted reuse. A study analyzed 262 confirmed COVID-19 cases in Beijing, revealing 46 severe cases (17.6%) and 216 common cases (82.4%), including mild, non-pneumonia, and asymptomatic cases. The median age was 47.5 years, with 48.5% male. Most patients were Beijing residents, with 26% having visited Wuhan. Common symptoms included fever, cough, and fatigue. The median incubation period was 6.7 days, and 17.2% of patients were discharged by Feb 10, 2020, with a fatality rate of 0.9%. The study compared Beijing's outbreak with 2003 SARS, noting lower fatality and higher discharge rates in Beijing. The study highlights the importance of early isolation and quarantine for close contacts. The research was supported by Beijing's Science and Technology Commission and the Ministry of Science and Technology. The study provides insights into the characteristics of COVID-19 in Beijing, emphasizing the need for continued monitoring and control measures.Elsevier established a free COVID-19 resource center in January 2020, offering information in English and Mandarin. The center grants free access to its research in PubMed Central and other repositories for unrestricted reuse. A study analyzed 262 confirmed COVID-19 cases in Beijing, revealing 46 severe cases (17.6%) and 216 common cases (82.4%), including mild, non-pneumonia, and asymptomatic cases. The median age was 47.5 years, with 48.5% male. Most patients were Beijing residents, with 26% having visited Wuhan. Common symptoms included fever, cough, and fatigue. The median incubation period was 6.7 days, and 17.2% of patients were discharged by Feb 10, 2020, with a fatality rate of 0.9%. The study compared Beijing's outbreak with 2003 SARS, noting lower fatality and higher discharge rates in Beijing. The study highlights the importance of early isolation and quarantine for close contacts. The research was supported by Beijing's Science and Technology Commission and the Ministry of Science and Technology. The study provides insights into the characteristics of COVID-19 in Beijing, emphasizing the need for continued monitoring and control measures.