Center for Disease Control project director AbdulSalam Nasadi told reporters today that most cases are centered around Kano city, the country's second largest.
Northern Zamfara state also has recorded hundreds of cholera cases.
Nasadi said health officials have deployed to oversee cleanups and advise people on the need for cleanliness.
Lack of proper sanitation and clean water, pit toilets, mounds of uncollected garbage and storm drains blocked by garbage are among issues that contribute to health threats. Cholera is caused by filth and dirty water.