The first round of the polio vaccination campaign in the Gaza Strip is nearing completion, the World Health Organization (WHO) said on Thursday, with more than 552,000 children having received their first dose of the oral vaccine. The campaign is expected to be concluded by Thursday, WHO representative Richard Peeperkorn said in a video call from the Gaza Strip. He said it had been incredibly encouraging to see the response to this campaign and that everywhere the teams went, parents did everything they could to ensure their child did not miss the vaccination. Children in Gaza are due to recei…