While the disease has spread quickly in birds since international authorities first confirmed its arrival in Africa on Feb. 8 , beginning with an outbreak in Nigeria 's Kaduna State , no human cases have been reported here .
Nigeria
Kaduna State
/location/country/administrative_divisions
Kaduna State
Nigeria
/location/administrative_division/country
Nigeria
Kaduna State
/location/location/contains
Africa
Nigeria
/location/location/contains
LOCATION
Africa
LOCATION
Nigeria
LOCATION
Kaduna State