Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Double-blind, Randomized, Controlled, Multicenter Study to Evaluate the Safety, Tolerability, and Immunogenicity of a New Formulation of RotaTeq™
Brief Summary: A study to compare safety, tolerability, and immunogenicity of a new formulation of RotaTeq™ with the existing formulation in infants. The primary hypothesis of the study is that the new formulation will be noninferior to the existing formulation on the basis of immunogenicity.


Options:
A: Inclusion Criteria:

* Parent or legal guardian agrees to have infant participate by giving written informed consent

Exclusion Criteria:

* History of congenital abdominal disorders, prior rotavirus gastroenteritis, chronic diarrhea, failure to thrive, or abdominal surgery
* History of intussusception
* Known or suspected impairment of immunological function, including Severe

Combined Immunodeficiency (SCID)

* Prior administration of any rotavirus vaccine
* Clinical evidence of active gastrointestinal illness, with the exception of well-controlled gastroesophageal reflux disease (GERD)
* Receipt of 1) systemic corticosteroids (≥ 2mg/kg total daily dose of prednisone or equivalent) for 14 consecutive days or more since birth, or 2) systemic corticosteroids ≥ 2mg/kg/dose within 7 days prior to the administration of the first dose of study vaccine. Participant using non-systemic corticosteroids will be eligible for vaccination.
* Residing in a household with an immunocompromised person
* Prior receipt of a blood transfusion or blood products, including immunoglobulins
* Participation in another interventional study within 14 days prior to the first study vaccination or expected anytime during the study
* Receipt of investigational inactivated vaccines within 14 days or investigational live vaccines within 28 days prior to the first study vaccination or expected anytime during the study
B: Inclusion Criteria:

* Subjects with a live twin living in the same household who is also enrolled in this study.
* Born after a gestation period of ≥32 weeks,
* Discharged from hospital neonatal care stay,
* Subjects who the investigator believes that their parents/guardians can and will comply with the requirements of the protocol should be enrolled in the study.
* A male or female between, and including, 6 and 14 weeks of age at the time of the first study vaccination.
* Healthy subjects as established by medical history and clinical examination before entering into the study.
* Written informed consent obtained from the parent or guardian of the subjects.

Exclusion Criteria:

* Use of any investigational or non-registered product (drug or vaccine) other than the study vaccine(s) within 30 days preceding the first dose of study vaccine, or planned use during the study period.
* Any confirmed or suspected immunosuppressive or immunodeficient condition, based on medical history and physical examination (no laboratory testing required).
* Any clinically significant history of chronic gastrointestinal disease.
* History of allergic disease or reactions likely to be exacerbated by any component of the vaccine.
* Acute disease at time of enrolment.
* Administration of immunoglobulins and/or any blood products since birth or planned administration during the study period.
* Contact with an immunosuppressed individual.
* 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 (pharmaceutical product or device).
* Chronic administration of immunosuppressants since birth.
* Gastroenteritis within 7 days preceding the first study vaccine administration.
* Documented HIV-positive subject.
C: Inclusion Criteria for All Vaccinations:

* Participant was born to an HIV-1-infected mother whose HIV-1 diagnosis was determined by two different tests performed on the same or separate maternal samples obtained before or during pregnancy or during the post-partum period. Acceptable tests are antibodies in serum or saliva, HIV RNA or DNA, or antigen in the blood.
* Presence or absence of HIV RNA or DNA in the blood of the infant
* CD4% documented at screening
* Parent or legal guardian agreed to give written informed consent and was willing to comply with study requirements
* Parents/guardians of each participant stated their willingness to have the child follow the country-specific childhood Expanded Programme on Immunization ("EPI") schedule for concomitant childhood vaccines recommended during the study period
* HIV-infected participants had initiated antiretroviral therapy (ART) before or at the time of administration of the first dose of study vaccine/placebo. Note: It was not acceptable for participants to take a prescription home with them to start ART on the day of vaccination.

Inclusion Criteria for second and third vaccinations:

* Successful administration of first vaccine (for second vaccination) and second vaccine (for third vaccination)
* Participants were less than 32 weeks of age at the time of the third vaccine/placebo dose

Exclusion Criteria for All Vaccinations:

* Concurrent participation in any study of an investigational drug or vaccine, except for studies for prevention of perinatal HIV-1 transmission
* Known allergy to any component of the study vaccine
* Active gastrointestinal illness or fever. Fever was defined as greater than or equal to 38.5º C in accordance with WHO guidelines for administration of childhood vaccines.
* Could not be enrolled from any site at which rotavirus vaccine was available and was being administered
* Any condition, which would, in the opinion of the site investigator, place the participant at an unacceptable risk of injury or render the participant unable to meet the requirements of the protocol
* Any other condition, situation, or clinically significant finding (other than HIV infection) that, in the investigator's opinion, would interfere with study participation, or interpretation
* Participants with a known history of Severe Combined Immunodeficiency (SCID) or intussusception

Exclusion Criteria for second and third vaccinations:

- Any Grade 4 adverse events believed to be possibly/probably/definitely related to vaccine would disqualify subjects from receiving additional doses. Grade 3 adverse events believed to be possibly/probably related to vaccine had to be demonstrated to have improved to less than Grade 2 prior to receiving the next scheduled dose.
D: Inclusion Criteria:

* Healthy infants birth weigh \>2000 g, 11 -17 weeks old at Dose 1 with written informed consent.

Exclusion Criteria:

* Allergic reaction to vaccine components; clinically significant history of chronic GI disease (uncorrected GI congenital malformation) or other serious medical condition per investigator, received vaccines or treatment prohibited by the protocol; immunocompromised.

Answer: A