The traditional ruler was murdered at his palace on Feb. 27.
The infection is often mild or without symptoms, but can sometimes be severe and life-threatening.
The police command in Ebonyi says it killed three and arrested two suspected gunmen.
The Ebonyi Labour Party senatorial candidate and ex-lawmaker is being remanded for alleged conspiracy and murder.
Five human contacts have been line listed, vaccinated and currently under surveillance.
The directive follows last Tuesday’s ruling by the Abuja Division of the Federal High Court that sacked Governor David Umahi and his deputy.
The former allies have been locked in fierce political confrontation in recent weeks.
The court ruled that the suit lacked merit and award cost of 500,000 against the plaintiff.
Ebonyi Governor David Umahi says he will never go back to his former party, the Peoples Democratic Party, PDP, despite rumours making the rounds.
The Ebonyi State permanent secretary in the Ministry of Local Government, Chieftaincy Matters and Rural Development was suspended for one month without salary.
