A health worker administering an anti-polio vaccination campaign at a health Centre in Sana'a, Yemen, this month. Photo: EPA-EFE
WHO says spread of polio remains international health emergency
- Governments urged not to become complacent in the battle to eradicate the paralysing disease
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World Health Organisation
A health worker administering an anti-polio vaccination campaign at a health Centre in Sana'a, Yemen, this month. Photo: EPA-EFE