Please select the eligibility criteria that correspond to the clinical trial below.
Title: Phase III, Multicenter, Randomized, Double-blind, Placebo-controlled Study to Evaluate the Efficacy and Safety of Live Attenuated Bovine-Human Rotavirus Reassortant Pentavalent Vaccine (BRV-PV) Against Severe Rotavirus Gastroenteritis in Healthy Indian Infants
Brief Summary: This is a Phase 3 multicentre, randomized, double blind, placebo-controlled study to determine the effectiveness of the rotavirus vaccine.


Options:
A: 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.
B: Inclusion Criteria:

* Healthy infants as established by medical history and clinical examination before entering the study.
* Age: 6-8 weeks at the time of enrollment.
* Parental ability and willingness to provide informed consent.
* Parent who intends to remain in the area with the child during the study period.

Exclusion Criteria:

* Presence of diarrhea or vomiting in the previous 72 hours or on the day of enrollment (temporary exclusion)
* Presence of fever on the day of enrollment (temporary exclusion).
* Acute disease at the time of enrollment (temporary exclusion)
* Concurrent participation in another clinical trial throughout the entire timeframe for this study.
* Presence of significant malnutrition (weight-for-height z-score \<-3SD median) or any systemic disorder (cardiovascular, pulmonary, hepatic, renal, gastrointestinal, hematological, endocrine, immunological, dermatological, neurological, cancer or autoimmune disease) as determined by medical history and/or physical examination which would compromise the subject's health or is likely to result in nonconformance to the protocol. History of congenital abdominal disorders, intussusception or abdominal surgery
* Known or suspected impairment of immunological function based on medical history and physical examination.
* Household contact with an immunosuppressed individual or pregnant woman.
* Prior receipt of rotavirus vaccine.
* A known sensitivity or allergy to any components of the study vaccine.
* Major congenital or genetic defect.
* History of persistent diarrhea (defined as diarrhea more than 14 days).
* Participant's parents not able, available or willing to accept active weekly follow-up by the study staff.
* Has received any immunoglobulin therapy and/or blood products since birth or planned administration during the study period.
* History of chronic administration (defined as more than 14 days) of immunosuppressants including corticosteroids. Infants on inhaled or topical steroids may be permitted to participate in the study.
* History of any neurologic disorders or seizures.
* Any medical condition in the parents/infant which, in the judgment of the investigator, would interfere with or serves as a contraindication to protocol adherence or a participant's parents' ability to give informed consent.
C: Inclusion Criteria:

At dose 1

* Healthy male or female, 18 to 40 years of age,
* Free of disease,
* Written informed consent obtained from subjects. At dose 2
* Received dose 1.
* Oral informed consent obtained from subject for continuing participate the study.

Exclusion Criteria:

At dose 1

1. Pregnant woman or planning to be pregnant during the study period.
2. Has a chronic disease (cardiovascular, liver, kidney disease).
3. Acute disease at the time of enrolment.
4. Administering corticosteroids (\> 1mg/kg/day).
5. Received any immunosuppressive therapy within 4 week before vaccination (Administration of immunoglobulins and/or any blood product or corticosteroids for \>2 weeks).
6. Immunosuppressive or immunodeficient condition.
7. Allergic or reaction with any component of vaccine, includes anaphylactic and shock with any antibiotic.
8. Fever (axillary temperature \>38oC) within 3 days before or on the day of vaccination.
9. Has any type of blood disorder, leukemia, or malignant tumor which can affect the bone marrow or lymph system.
10. Use of any investigational or non-registered product (unlicensed drug or vaccine) other than the study vaccine during the study period.

At dose 2

1. Pregnant woman or planning to be pregnant in next 1 month.
2. Acute disease at the time of 2nd dose.
3. Administering corticosteroids (\> 1mg/kg/day).
4. Received any immunosuppressive therapy within 4 week before vaccination (administration of immunoglobulins and/or any blood product or corticosteroids for \>2 weeks).
5. Immunosuppressive or immunodeficient condition.
6. History of allergic disease or reactions likely to be exacerbated by any component of the study vaccine.
7. Fever (axillary temperature \>38oC) within 3 days before or on the day of vaccination.
8. Has any type of blood disorder, leukemia, or malignant tumor which can affect the bone marrow or lymph system.
9. Use of any investigational or non-registered product (unlicensed drug or vaccine) other than the study vaccine during the study period.
D: Inclusion Criteria:

1. Mother willing to sign informed consent form.
2. Healthy infant aged 0 to 7 days old.
3. No obvious congenital abnormalities or birth defects.
4. No abnormal (frequency and consistency) stools since birth.
5. Stable household with no plans to leave the area for the next one year.

Exclusion Criteria:

1. Parents are not willing to have child vaccinated at the field clinic.
2. Parents are not willing to have child's blood drawn.
3. Parents are planning to enroll child into another clinical study during the time period of this trial.
4. Mother not willing to have blood drawn and breast milk extracted.
5. Parents not willing to have field research assistant in home two times per week.
6. History of seizures or other apparent neurologic disorders.
7. Infant received any vaccines before start of study, except Bacillus Calmette-Guerin (BCG).
8. Infant has any sibling currently or previously enrolled in this study, including a twin.

Answer: B