France - Is the flu vaccine (really) safe?

In France, according to a pharmacists federation, around 1 million people had already received their flu shot in a pharmacy by 19th November. The flu vaccines used this year, Influvac, Fluarixtetra, Vaxigrip tetra, Influvac Tetra, are all inactivated, and none contain aluminium nor thimerosal. They do contain egg protein, as well as negligible traces of formaldehyde and octoxynol, to avoid infections