On February 17, 2020, the Central Epidemic Command Center (CECC) announced two more cases of coronavirus disease 2019 (COVID-19). One of the cases is a female in her 80s (21st case) while the other case is a male in his 30s (22nd case). The two patients are family members of 19th and 20th cases announced yesterday (February 16). The contact tracing initiated by the health agency found that the 21st case developed symptoms February 6, and the 22nd case had a fever and cough from January 28 to February 6. The two patients were confirmed infected with COVID-19 after lab tests today (February 17). As 22nd case don’t live with the other 3 family members, the case is believed to be contracted from the index case at a family reunion during the Lunar New Year holiday, and thus it is determined to be a family cluster.