Study to Evaluate the Safety and Immunogenicity of a 10-valent Pneumococcal Conjugate Vaccine in Preterm Infants

Inclusion Criteria

• Subjects who the investigator believes that their parents/guardians can and will comply with the requirements of the protocol
• A male or female between, and including, 8-16 weeks (56-118 days) of age at the time of the first vaccination.
• Written informed consent obtained from the parent or guardian of the subject.
• Born after a gestation period of >27 weeks (at least 189 days).
• If full term born, healthy subjects as established by medical history and clinical examination before entering into the study
• If premature, medically stable condition (not requiring significant medical support or ongoing management for debilitating disease and having demonstrated a clinical course of sustained recovery).

Exclusion Criteria

• Use of any investigational or non-registered product (drug or vaccine) other than the study vaccines within 30 days preceding the first dose of study vaccines, or planned use during the study period
• Chronic administration (defined as more than 14 days) of immunosuppressants or other immune-modifying drugs from birth to the first vaccine dose.
• Planned administration/administration of a vaccine not foreseen by the study protocol, during the period starting from one month before the first dose of vaccines and up to Visit 6.
• Previous vaccination against diphtheria, tetanus, pertussis, polio, hepatitis B, Haemophilus influenzae type b, Neisseria meningitidis and/or Streptococcus pneumoniae with the exception of vaccines where the first dose can be given within the first two weeks of life according to the national recommendations
• History of or intercurrent diphtheria, tetanus, pertussis, hepatitis B, polio, Haemophilus influenzae type b disease, Neisseria meningitidis.
• History of allergic disease or reactions likely to be exacerbated by any component of the vaccines.
• History of any neurologic disorders or seizures (this criterion does not apply to subjects who have had a single, uncomplicated febrile convulsion in the past).
• Acute disease at the time of enrolment.
• Any confirmed or suspected immunosuppressive or immunodeficient condition based on medical history and physical examination
• A family history of congenital or hereditary immunodeficiency.
• Major congenital defects or serious chronic illness.
• Administration of immunoglobulins, with the exception of monoclonal antibodies against RSV, and/or any blood products within one month preceding the first dose of study vaccines or planned administration during the active phase of the study.