Jan 2006 Publication
https://www.google.com/url?sa=t&sou...Vaw1oPMCgBvMuDj0Yi5fDyxxb&cshid=1610710126813
The 1918 virus mutated 3 times, 2nd was the worst, it also merged with a bird or swine variants over the 20th century
1918 H1N1 - H1N1.2 - H1N1.3
1957 H2N2
1968 H3N2
Also from the same 2006 publication...
...Yes, we can prepare, but with the realization that no amount of hand washing, hand wringing, public education, or gauze masks will do the trick. The keystone of influenza prevention is vaccination.
Also...gist; there are 16 variants...HN viruses...with added Antigens - and the only way to protect is have vaccines of all known varients pre made and on hand
Over to you Big Pharma and Big Govts
Just sayin like