The originality of the study is based the fact that the study will be a clinical test(essay) phase the IInd for this new vaccine. Additional it will allow to obtain information in relation to the immunity crossed between(among) pandemic vaccines and seasonal vaccines. Equally it will allow to obtain evidence on the impact of the possible protection of the seasonal vaccine that is in use in the routine programs of vaccination in opposition to the virus of the influenza To (H1N1sw). Finally this type of study is only(unique) in his design since adult population will be evaluated in Mexico.