Israel’s BiondVax has published independent tests of trials showing that its M-001 Universal Flu vaccinations given 3 years ago have protected patients from flu strains that only came into existence well after the vaccine was administered.

http://www.biondvax.com/2015/08/03/independent-results-show-that-biondvaxs-universal-flu-vaccine-administered-in-a-trial-3-years-ago-improves-immunogenicity-against-current-flu-h3n2-epidemic/