521 new cases of COVID-19 were recorded by the Nigeria Centre for Disease Control, NCDC, on Sunday 21st of January.
NCDC made this know during their daily COVID-19 report in the country.
Lagos had the highest number of cases for the day with 166 new cases.
Ogun came distant second with 52 new cases, Rivers had the third highest cases with 47 new cases.
Adamawa and Ebonyi both had 37 new cases for the day.
Here is a breakdown of the cases: