These are U.S. flu figures representing a large sample of Avian (bird flu infecting humans) Flu subtyped for years 1999-2000 (referencing to Title of page above). The Avian Flu (people infected with bird flu) subtyping was done by WHO and NREVSS Laboratories. It was found that three thousand six hundred and forty (3,640) persons subtyped as infected with Hong Kong Flu H3N2 which was 97% percent of total avian bird flu subtyped and the remaining 3% of avian bird flu subtyped (132 cases) was Spanish Flu H1N1. No Asian Flu H2N2 turned up in the U.S. sampling.                                                                                         All Spanish Flu H1N1 in the U.S. is now (lp) low pathogenic flu or (ip) intermediate pathogenic flu in contrast to the (vhp) very high pathogenic H5N1 Spanish Flu rampant infectious tragedy that in the U.S. began in Boston sometime August 27, 1918 - September 4, 1918 which was the worst tragedy in deaths the world has ever known. The H1N1 flu in the following two years was to kill far over one hundred million people (100,000,000) in the world. Ducks, geese, terns, gulls and other birds are infected by and carry the Spanish Flu and the Hong Kong Flu. The Spanish Flu and Hong Kong flu are to reiterate bird flu.                                                                                                        Spanish Flu (Swine Flu) of year 1900 mutated with 1,000 recombinant mutate variants 1918 like 1,000 nuclear warheads at Spitsbergen during a mankind caused phenomenal summer warming of western fjord waters. The hypothesis is this via leached out of the freeze for a better word old and ancient Mastondon bird flu recombinant viral material many people had lost immunity to.                                                           The avian bird flu H1N1 called before year 1918 Spanish Flu and Swine Flu remains with us today to a presently limited extent. And it is carried yearly to Spitsbergen by nesting waterfowl. In terms of the family H1N1 begat H2N2 which dwelt in Asia and was simply called Asian Flu. H2N2 begat H3N2 called Hong Kong which was  a traveler. Hong Kong seeing the earlier family was still around gave up it's name and called itself U.S. Annual Flu to include H1N1 (Spanish Flu) and H2N2 (Asian Flu).                                                                H1N1 seems to have a talent for recombinant mutates which could cause it to kill three billion people in the world. And this is year 2006, not year 1918 when most people rural or cities kept chickens, ducks and geese in their back yards and were themselves infected by mild bird flu which gave some immunity upon the Spanish Flu mutating from (lp) low pathogenic status to (hp) deadly high pathogenic status through recombinant leaching out of the freeze in Spitsbergen old and ancient bird flu viral material. Fortunately the vaccine for U.S. Annual flu should offer considerable protection for Asian Flu and Spanish Flu which are the immediate family of Annual Flu and have not left us.                                                           And in divers places or places not so diver dwells Asia flu H5N1 and it's Americas sister H5N2 flu. China has done a lot of work on H5N1 and has come to focus on saving chickens believing  it is not an exceptionaly dangerous flu to humans. They have a successful vaccine for Asia H5N1 they make out of America H5N2. It is a good vaccine for chickens and it is likely it will work for humans although there is no need at present for an H5N1 or H5N2 vaccine for humans.                                                               The vaccine for U.S. Annual Flu may be perfected presently or not perfected presently in terms of a vaccine whose effect poses minimum health risk to people given present day (lp) status of world flu in general. It is a balancing act. Thus U.S. Annual Flu vaccine is also a vaccine that should work for both Asian Flu H2N2 and Spanish Flu H1N1, both still with us, that can help prevent infection by these flu. But in view of potential of another (hp) Spanish Flu mutation much more work needs be done on Annual Flu vaccine. There is some comfort that Spanish Flu from 1918 to 1920 when it went on a rampage in the worse tragedy the world had ever known left a world following it immune to H1N1. It may be the case. As likely as not it is. But with another phenomenal warming trend at Spitsbergen another strata of different old and ancient bird flu recombinant materials may be leached out of the next lower strata in the freeze. The next strata may be very mild flu recombinants or very lethal. Level headed common sense will prevent us from having to know the outcome.