On March 3, the Central Epidemic Command Center announced the 42nd confirmed case of coronavirus disease 2019 (COVID-19) in Taiwan. Case #42 is a family member of a discharged patient who had stayed at the same hospital ward, but a different patient room, as Case #34 before Case #34’s diagnosis with confirmed COVID-19 infection. Case #42 is a female in her 50s and didn’t travel abroad. After health agencies began to test patients with risk of infection and people accompanying patients for COVID-19 and found that Case #42 had respiratory symptoms, the agencies arranged her medical care and related tests on March 1. Case #42 was admitted to a negative pressure isolation room and tested positive for COVID-19 on March 3.