Abuja – 04 May 2021- When health teams discovered pockets of vaccine-derived poliovirus outbreaks in seven states in Nigeria (Lagos, Delta, Bayelsa, Zamfara, Niger, Sokoto and Kebbi), national and state authorities in collaboration with the World Health Organization (WHO) and partners quickly moved to quell the threat to the health of thousands of children.
In Lagos, Delta, Bayelsa, Zamfara and Niger, the cases were detected during the second half of 2020, while the remaining States reported cases in the first quarter of 2021.