On March 11, the Central Epidemic Command Center (CECC) announced the 48th confirmed case of coronavirus disease 2019 (COVID-19) in Taiwan. Case #48 is an over-30-year-old female who resides in northern Taiwan. She traveled by herself to the United Kingdom and visited friends in the U.K from February 28 to March 8. After returning to Taiwan, Case #48 sought medical attention at a clinic due to dizziness and headache on March 9. She sought medical care at a hospital on March 10 for developing a mild fever and a slight cough. The case was then reported to health agencies, and she was tested for COVID-19. Infection with COVID-19 was laboratory-confirmed in the case on March 11. Case #48 is being treated in a negative pressure isolation ward.