@CPageYYC @AndrewNoymer People who were old enough to be alive in 1889 did much better during 1918. This is contrary to the usual case where adults, at least, do worse if older, not better. The most logical explanation for that is immunity from being exposed (and surviving) a related flu in 1889.
@CPAGEYYYC@AndrewNoymer 1889年的老人在1918年的表现要好得多。这与通常的情况相反，成年人如果年纪大了，至少会表现得更糟，而不是更好。对此最合理的解释是对1889年相关流感的免疫力。