Please select the eligibility criteria that correspond to the clinical trial below.
Title: Efficacy, Safety, and Immunogenicity of RotaTeq™ Among Infants in Asia and Africa
Brief Summary: The purpose of the current study is to evaluate whether the vaccine is effective, well-tolerated and immunogenic among infants in developing countries.


Options:
A: Inclusion Criteria:

* Subjects who the investigator believes that parent(s)/Legally Acceptable Representative(s) can and will comply with the requirements of the protocol.
* A male or female between, and including, 6 and 12 weeks of age at the time of the first vaccination.
* Written informed consent obtained from the parent(s)/Legally Acceptable Representative(s) of the subject.
* Healthy subjects as established by medical history and clinical examination before entering into the study.
* Infants who have received a previous dose of hepatitis B immunoglobulin after birth.

Exclusion Criteria:

* Child in care.
* Use of any investigational or non-registered product other than the study vaccine within 30 days preceding the first dose of study vaccine, or planned use during the study period.
* Chronic administration of immunosuppressants or other immune-modifying drugs with the exception of Hepatitis B immunoglobulin since birth. Child is unlikely to remain in the study area for the duration of the study.
* Planned administration/administration of a vaccine not foreseen by the study protocol within 30 days of the first dose of vaccine.
* 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.
* Previous vaccination against rotavirus.
* Any confirmed or suspected immunosuppressive or immunodeficient condition, based on medical history and physical examination.
* Family history of congenital or hereditary immunodeficiency.
* 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 (with the exception of HBIG) and/or any blood products since birth or planned administration during the study period.
* Gastroenteritis within 7 days preceding the study vaccine administration.
* Previous confirmed occurrence of Rotavirus gastroenteritis.
B: Inclusion Criteria:

* Age 4 weeks through 12 weeks at Dose 1
* Parent able to understand study procedures and give consent

Exclusion Criteria:

* Clinical evidence of active gastrointestinal disease
* Subjects who are currently or expected to participate in other studies of investigational products during the 6 weeks after receiving the last dose of RotaTeq™/placebo
C: Inclusion Criteria:

* Healthy male or female infant between, and including, 6 and 12 weeks of age born after a gestation period of 36 to 42 weeks or a birth weight of \>2000g.
* Written informed consent obtained from the parent or guardian of the subject.

Exclusion Criteria:

* Planned administration of oral polio vaccine during the period starting from 2 weeks before each dose of study vaccine(s) and ending 2 weeks after.
* Any confirmed or suspected immunosuppressive or immunodeficient condition, including human immunodeficiency virus (HIV) infection
* History of diphtheria, tetanus, pertussis, Hib disease and/ or hepatitis B.
* Previous vaccination against diphtheria, tetanus, pertussis, and/or Haemophilus influenzae type b.
* History of allergic disease
* Any clinically significant history of chronic gastrointestinal disease including any uncorrected congenital malformation of the GI tract or other serious medical condition as determined by the investigator.
* Gastroenteritis within 7 days preceding the study vaccine administration (warrants deferral of the vaccination)
* Previous confirmed occurrence of RV GE.
* Household contact with an immunosuppressed individual or pregnant women.
* Administration of immunoglobulins and/or blood products since birth or planned administration during the study period
D: Inclusion Criteria:

* Healthy infants of 6 weeks of age (±2 days).
* Study families reside within the Health and Demographic Surveillance System (HDSS) area, service area of the ICDDR,B.
* Family able to understand and comply with planned study procedures

Exclusion Criteria:

* Family residence outside the ICDDR,B HDSS service area, or families expecting to move away during the study period, will be excluded.
* A diagnosis or suspicion of immunodeficiency disorder (either in the infant or in a member of the immediate family).
* A diagnosis or suspicion of bleeding disorder that would contraindicate venipuncture.
* Acute diarrhea, infection or illness at the time of the first visit (6 weeks of age) that would require infant's admission to a hospital or would contraindicate provision of OPV per country guidelines.
* Acute vomiting and intolerance to liquids within 24 hours before the first visit (6 weeks of age).
* Receipt of OPV or IPV at any time before enrollment based upon mother's recall or immunization card if available.
* Because of contact transmission of vaccine poliovirus strains, newborns from multiple births will be excluded from the study to prevent transmission of vaccine strains received during routine immunization from the twin to the study participant.

Answer: B