On July 15, the Central Epidemic Command Center (CECC) announced one new domestic case of the Omicron subvariant BA.5 in Taiwan. The BA.5 case is an over 20-year-old female living in northern Taiwan. She has received three COVID-19 vaccine doses and has no history of international travel. She had been diagnosed with COVID-19 in mid-May and recovered. The woman's family members were diagnosed with COVID-19 on July 3 and 5. She developed a runny nose and other symptoms on July 5 and tested positive for COVID-19 with a rapid test on July 6. She then visited the hospital to undergo a PCR test, and it has been confirmed by genome sequencing that she is infected with BA.5.