The mix of the flu strains is different each year, because they take a punt at which flu strains are likely to be around over the winter when they start growing the vaccine earlier in the year.
The more vaccines you get, the more resistant you become to flu, as you grow partial immunity to strains related to ones you've been vaccinated against - as well of course as the main one!
Are you in your forever house?
Retiring and living frugally in money from downsizing after years of stress

