What changed
WHO representative Mr Ursu warned on 13 October 2026 that gaps in immunisation continue to leave Nigerian children vulnerable to vaccine-preventable diseases. Nigeria is still struggling to contain measles and circulating vaccine-derived poliovirus, despite support from international partners.
Why it matters
The warning points to a basic problem with a serious edge: children remain exposed while those diseases continue circulating. Immunisation gaps can turn preventable illness into a continuing public-health challenge, especially when protection is uneven.
The scale and location of the gaps are not clear from the information available. But the message is straightforward: outside support has not yet closed the protection gap, and containing measles and vaccine-derived poliovirus remains unfinished work.
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