The Director-General, NCDC, Dr Chikwe Ihekweazu, who disclosed this in a statement on Saturday in Abuja, explained that the current figures were as of Friday, January 24.
Ihekweazu said out of the confirmed cases, 89 per cent were from Ondo, Edo and Ebonyi states.
The NCDC boss said that the increased number of cases at this time of the year was not unusual due to ecological factors.
He said that in response to the increasing number of Lassa fever cases across the states, the NCDC activated a National Emergency Operations Centre on Friday to coordinate response activities.
Ihekweazu said the EOC includes representatives from the National Emergency Management Agency, Federal Ministry of Agriculture and Rural Development, Federal Ministry of Environment, World Health Organisation, UNICEF, US Centres for Disease Control, and other partners.
He said the NCDC would continue to support states in strengthening their preparedness and response capacity.
He added that over the last three weeks, NCDC had deployed Rapid Response Teams to support five of the affected states.
According to him, it will ensure prompt case management and other response activities in order to reduce the number of deaths.
The News Agency of Nigeria recalls that Lassa fever virus is transmitted by rodents, which can be found in the environment.
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