After the world experienced the global Ebola epidemic in 2014 and 2015, the Zika epidemic spread rapidly from South America to the whole world in 2016. Although the epidemic eased in the second half of the year, it had expanded in more than 70 countries and regions. Profited from the cooperation in the international community, the yellow fever epidemic had not continued to expand in Africa. The H5N3 avian influenza outbroke in some parts of Asia by the end of 2016, and the number of sporadic cases of H7N9 a...