On March 21, Tainan City announced one newly confirmed case#22086, a female in her 60s, living in Xinying District. Case#22086 is an asymptomatic case and has received full three doses of the COVID-19 vaccine. Because she was under home isolation during the contagious period, there is no activity footprints in Tainan city, and the risk of community infection is relatively small.
Case#22086 is the mother of case#21297. Due to case#21297 was announced as a confirmed case on March 11, then she was identified to undertake home isolation. Before the expiry of her quarantine period, she was arranged by the health bureau to take the specimen test, then got a positive diagnosis, and the Ct value was 29.85.