If it were Fujian could that give us some immunity to that particular strain, as opposed to people who have never been exposed to it? Are you following me?
I know there is no real way to know, just curious.
If you look at last year's CDC flu summary, you will see that 100 H3N2 were subtyped. 93 were Panama and 7 "had reduced titers". Those that had reduced titers were Fujian. Thus, Fujian was running at about 7%, but it came up late, so the percentage of later cases was higher.
Everything about Fujian was classic. It came up late in the season and was gaining strength. It also had mutations in key positions (matching sequences of pigs and ducks as well as human isolates from just after the 1968 Pandemic).
The science was a no-brainer. The early appearance and severity this season was NOT unexpected (to anyone paying attention). The vaccine wasn't working well and the virus was beginning to take off last season.
If you had Fujian last year you will be much better off you would be from getting a Panama flu shot this year.