UNITED NATIONS, Nov 08 (IPS) - On November 6, the World Health Organization (WHO) announced that the second round of polio vaccinations in the Gaza Strip has been completed. A total of 556,744 children under ten years of age received the mOPV2 vaccine along with a dose of vitamin A to ensure immunization. However, due to rampant hostilities from the Israeli Defense Forces (IDF), the campaign has not been entirely successful, leading to humanitarian organizations fearing that herd immunity has not been achieved.