A Study to Assess the Immunogenicity and Safety of GSK Biologicals' Infanrix-IPV/Hib Vaccine Administered as a Three-dose Vaccination Course at 3, 4.5 and 6 Months of Age and a Booster Dose at 18 Months of Age in Healthy Infants in Russia

Inclusion Criteria: * Subjects' parent(s)/Legally Acceptable Representatives \[LARs\] who, in the opinion of the investigator, can and will comply with the requirements of the protocol. * A male or female child between 3 and 4 months of age at the time of the first vaccination. * Written informed consent obtained from the parents/LARs of the subject prior to performing any study specific procedure. * Healthy subjects as established by medical history and clinical examination before entering into the study. * Born full-term. Exclusion Criteria: * Child in care * Use of any investigational or non-registered product other than the study vaccine during the period starting 30 days before the first dose of study vaccine, or planned use during the study period. * Any medical condition that in the judgment of the investigator would make intramuscular injection unsafe. * Chronic administration of immunosuppressants or other immune-modifying drugs during the period starting since birth. For corticosteroids, this will mean prednisone ≥ 0.5 mg/kg/day, or equivalent. Inhaled and topical steroids are allowed. * Administration of long-acting immune-modifying drugs at any time during the study period * Planned administration/administration of a vaccine not foreseen by the study protocol in the period starting 30 days before the first dose and ending 30 days after the last dose of vaccine administration, with the exception of hepatitis B and other vaccines given as part of the national imm…