On May 28, the Central Epidemic Command Center (CECC) announced 299 new confirmed cases of coronavirus disease 2019 (COVID-19) in Taiwan. Of the 299 new cases, 297 are indigenous and the other two are imported. Furthermore, the CECC reported 258 retroactively added cases; a total of 557 cases were recorded. The CECC also announced 19 deaths today.

The CECC pointed out that of the 297 indigenous cases, 157 are men and the other 140 are women ranging in ages from under 5 to 99 years old. They began to suffer the onset of symptoms between April 29 and May 27, 2021. Regarding those indigenous cases, New Taipei City reported most cases, at 136, and Taipei City had the second highest number, at 94. Taoyuan City reported 21 cases; Taichung City reported 10; Hualien County reported 9; Changhua County reported 7; Keelung City and Tainan City reported 6 each; Chiayi City reported 2; Hsinchu County, Pingtung County, Taitung County, Nantou County, Hsinchu City and Kaohsiung City reported 1 each.

Of the 258 retroactively added cases, 133 are men and the other 125 are women ranging in ages from under 5 to 99 years old. They suffered the onset of symptoms between May 11 and May 27. Regarding the 258 cases, New Taipei City reported most cases, at 141, and Taipei City had the second highest number, at 114. Changhua County reported 2 cases, and Taoyuan City reported 1.

Regarding the 19 deaths, they were 14 men and five women between 40 and 89 years old.

Regarding the two imported cases, Case #7332 is a Taiwanese boy under 10. He experienced a runny nose in Australia on May 18. He returned to Taiwan on May 26. Upon arrival, he voluntarily notified airport quarantine officers that he had experienced symptoms. After he was tested for COVID-19, infection with COVID-19 was laboratory-confirmed in the case on May 28.

Case #7333 is an over 20-year-old female from the Philippines. She traveled to Taiwan for work on May 14. She was tested on May 24 before completing the quarantine period, and infection with COVID-19 was laboratory-confirmed in the case on May 28.

The CECC reported that a cumulative total of 455,198 cases related to COVID-19 have been reported in Taiwan among which COVID-19 has been ruled out in 397,534. Of these reported cases, infection with COVID-19 was laboratory-confirmed in 7,315 cases. Of the 7,315 confirmed cases, 1,126 are imported; 6,136 are indigenous; 36 are naval crew members aboard the Panshi fast combat support ship; 2 are infections on an aircraft; 1 case has unknown sources of infection; 14 cases' sources of infection are being investigated; and 18 cases (Case #530, Case #1589, Case #1676, Case #1591, Case #1886, Case #2067, Case #2068, Case #2528, Case #2530, Case #2599, Case #3549, Case #3921, Case #3975, Case #3989, Case #3990, Case #3991, Case #4059 and Case #4726) have been removed (those case numbers are not assigned to any patients). Of the confirmed cases, there have been 78 deaths.