A massive polio immunization drive is under way in more than 20 nations of West and Central Africa, but in Cote d'Ivoire violence has forced a postponement of the vaccination campaign, the Global Polio Eradication Initiative (GPEI) announced November 18.
a massive polio immunization drive is under way in more than 20 nations of west and central africa but in cote d ivoire violence has forced a postponement of the vaccination campaign the global polio eradication initiative gpei announced november 18