The World Health Organisation representative in Nigeria, Dr Walter Kazadi Mulombo said the country should continue to be vigilant in border areas of Niger, Chad, Benin and Cameroon to prevent polio.
According to him, its to keep immunization coverage high enough to protect all children against the wild polio virus.
Mulombo disclosed this while presenting last surviving wild polio virus case from Monguno, at Emergency Operation Centre Maiduguri.
He said the last surviving case in Nigeria, was Modu Busami, a six-year old child from Monguno ward of Monguno council of Borno state.
He said Nigeria need to remain vigilant and continue with surveillance; to make sure that all the children get immunized.