Safety of GSK Biologicals' Infanrix-IPV+HibTM Vaccine in Healthy Vietnamese Toddlers

• Occurrence of solicited local and general symptoms [ Time Frame: During the 4-day (Day 0-3) follow-up period after booster vaccination ] [ Designated as safety issue: No ]
• Occurrence of unsolicited adverse events [ Time Frame: During the 31-day (Day 0-30) follow-up period after booster vaccination ] [ Designated as safety issue: No ]
• Occurrence of serious adverse events [ Time Frame: From the booster dose (Day 0) up to study end (Month 1) ] [ Designated as safety issue: No ]

This study aims to evaluate the safety and reactogenicity of a booster dose of Infanrix-IPV+HibTM when administered to healthy Vietnamese toddlers at 12 to 24 months of age who were vaccinated previously against diphtheria, tetanus, and pertussis diseases within their first six months of lives.

• Haemophilus Influenzae Type b Diseases
• Diphtheria
• Poliomyelitis
• Pertussis
• Tetanus

Inclusion Criteria:

• Subjects who the investigator believes that parent(s)/Legally Acceptable Representative(s) [LAR(s)] can and will comply with the requirements of the protocol.
• A male or female between, and including, 12 and 24 months of age at the time of vaccination.
• Written informed consent obtained from the parent(s)/LAR(s) of the subject.
• Healthy subjects as established by medical history and clinical examination before entering into the study.
• Subjects who were primed with three doses of a DTP and polio vaccine in the first 6 months of life, and who have received the last dose of the primary vaccination at least six months before the receipt of study vaccine.

Exclusion Criteria:

• Child in care.
• Use of any investigational or non-registered product other than the study vaccine within 30 days preceding the dose of study vaccine, or planned use during the study period.
• Administration of a vaccine not foreseen by the study protocol, within 30 days prior to the first study visit, or planned administration during the study period.
• Any confirmed or suspected immunosuppressive or immunodeficient condition, based on medical history and physical examination.
• Concurrently participating in another clinical study, at any time during the study period, in which the subject has been or will be exposed to an investigational or a non-investigational product.
• Evidence of previous or intercurrent booster vaccination against diphtheria, tetanus, pertussis, poliomyelitis and/or Hib disease or vaccination.
• History of any neurological disorders or seizures.
• History of any reaction or hypersensitivity likely to be exacerbated by any component of the vaccine.
• Major congenital defects or serious chronic illness.
• Acute disease and/or fever at the time of enrolment.
• Administration of immunoglobulins and/or any blood products within the three months preceding vaccination or planned administration during the study period.