| | | | | 2017 | | | | | | | | | | | | | | | | | | | 90% | 70% | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 50% | | | | | | | | | | | | | | | | | | | | | | | | | | H7N9 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2017 3 13 | | | | |