At least 59 people have been killed and 150 others injured in a stampede in Seoul’s Itaewon district amid Halloween festivities, the Yonhap news agency reported in the early hours of Sunday, citing fire officials. Some 50 people had to be revived after suffering cardiac arrest and at least 20 were admitted to emergency rooms in surrounding hospitals, an earlier report said. Videos circulating on social media showed several dozen people covered with blue plastic sheets at the roadside. Witnesses said the streets around the scene of the crush were so crowded that it was difficult for the emergen…