A total of 2,121 new COVID-19 cases were reported on Sunday in Ernakulam even as the test positivity rate (TPR) stood at 10.46%.
Nine persons who tested positive had come from outside the State, while 2,051 were cases of local transmission.
Four health workers are among the newly infected, and the source of infection among 57 persons is not known.
A communication from the district administration said Thrikkakara had the highest number of cases at 80, while Kalamassery had 47 cases and Kunnathunadu 78 cases. Thripunithura had 53 cases and Vyttila 33 cases.
Varappuzha, Ponekkara, Panampilly Nagar, and Chalikkavattom reported less than five new cases, the communication added. There are 24,711 people under treatment in the district now. A total of 20,286 samples were sent for tests on Sunday.