Photo taken on Jan. 22, 2015 shows the vaccine (S-IPV) against poliomyelitis at the Institute of Medical Biology of the Chinese Academy of Medical Sciences, located in Kunming, capital of southwest China's Yunnan Province. China's drug watchdog has licensed a new vaccine against the poliomyelitis, the Ministry of Science and Technology announced on Jan. 15. The S-IPV is a breakthrough for China to keep the polio-free status and for the world to kill the polio. The WHO is considering use of the new vaccine in its global polio treatment program. (Xinhua/Lin Yiguang)