​Minister of Health, Professor Isaac Adewole​​​ ​has stated that​ ​one billion dollars was required to vaccinate 21 million people in five Meningitis endemic states​, adding that 490 people have already been killed.​ ​He spoke on Tuesday at ​an emergency meeting ​in ​Kaduna​ held by Northern Traditional Leaders and Governors​.​ He said the outbreak ​was deadly in Sokoto, Zamfara, Kabbi, Niger