| 1. | More recently , two other influenza a pandemics occurred in 1957 asian flu and 1968 hong kong flu , which also caused significant morbidity and mortality globally , although not on such a dramatic scale as that of the spanish flu , which has the highest death rate among healthy young adults
较近期的甲型流感大流行出现于一九五七年亚洲型流感及一九六八年香港型流感，两者的规模虽不及西班牙型流感，但亦在全球造成重大伤亡。 |
