Yes, there is relevant work on assessing the rationale behind the recurrence of diphtheria in Kano, Nigeria. The recent diphtheria outbreak in Nigeria has significantly affected Kano State, making it the epicenter of the outbreak
Kano in Nigeria had reported large numbers of diphtheria cases as its epicenter. The epidemiological study had stated lower anti-diphtheria vaccination to be the major cause. So necessary action should be undertaken in this regard.