[Influenza vaccines--routine and recent vaccines].

Current influenza vaccines in use at present are predominantly inactivated virus vaccines. The vaccines currently in use are designated whole-virus vaccines, split virus vaccines or subunit vaccines. In Europe, two new types of influenza vaccines have reached the commercial introduction. One is produced in Italy and uses the new adjuvant MF59 to enhance the immune response. The other type is produced in Switzerland and uses phosphatidyl choline (lecithin) liposomes as surface antigen carriers.