gsgs
Registered User
The winter of 1920 again saw flu with relatively high death rates. But people who'd been infected in 1918 and had survived were not protected during that outbreak, so it was probably caused by an entirely new strain of virus.
After-the-fact surveys of bloodstream antibodies suggests that 98 percent of Americans alive in 1918 and 1919 had been infected.
http://www.puertorico-herald.org/issues/2003/vol7n30/KillerVirus-en.html
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I remember reports from England, showing that there was
some protection (~30-50% reduced chance to die) from
wave1 to wave2, but not from wave2 to wave3 let alone
wave1 to wave3
After-the-fact surveys of bloodstream antibodies suggests that 98 percent of Americans alive in 1918 and 1919 had been infected.
http://www.puertorico-herald.org/issues/2003/vol7n30/KillerVirus-en.html
--------------------------------
I remember reports from England, showing that there was
some protection (~30-50% reduced chance to die) from
wave1 to wave2, but not from wave2 to wave3 let alone
wave1 to wave3