The Spanish flu pandemic in 1918 to 1920 killed between 20 million and 100 million people worldwide.

1918年至1920年西班牙流感大流行，造成了全世界范围内1至2百万人死亡。

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We can get some idea of its magnitude from the Spanish flu pandemic in 1918, which killed between 20 and 50 million people.

1918年的西班牙流感大流行造成2000万至5000万人死亡，这可使我们对禽流感的规模有一定的了解。

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Researchers studied medical literature published shortly after the 1918 Spanish flu pandemic and found eight relevant studies.

研究人员研究了在西班牙流感大流行后随即出版的医学文献，找到了8个相关研究。

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"I think the world is infinitely better prepared than it was 90 years ago, " said WHO spokesman Gregory Hartl, referring to the 1918 Spanish flu pandemic that killed as many as 20 million people.

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Medical historians believe that a large proportion of those who died of the Spanish flu pandemic in 1918 were not killed by the flu virus, but by secondary bacterial pneumonia, which was difficult to treat before the introduction of antibiotics.

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After Spanish flu in 1918 and Asian flu in 1957, there was another pandemic, Hong Kong flu (H3N2) in 1968.

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