Please select the eligibility criteria that correspond to the clinical trial below.
Title: The Effect of Prophylactic Micronutrient Supplementation of Morbidity and Growth in HIV-infected and HIV-uninfected Children in South Africa
Brief Summary: The purpose of the study is to see if giving vitamin and mineral supplements helps to protect infants and children from diarrhea, which vitamins and minerals help to improve a child's weight and growth, and if the same results occur in infants and children with HIV. HIV is the virus that causes AIDS. Study participants will include 516 infants aged 4-6 months. Participants will include: (1) HIV-infected children, (2) HIV-uninfected children with HIV-infected mothers, and (3) HIV-uninfected children with HIV-uninfected mothers. Subjects will have an equal chance of receiving one of three different vitamin and/or mineral supplements during the study. Study procedures will include up to 7 blood samples and stool samples every 3 months and body composition every 6 months. Participants will be involved in the study for up to 18 months.


Options:
A: Inclusion Criteria:

4-6 months of age (stratified by HIV status) Infant able to take oral preparations Consent of parent/guardian HIV status obtained from mother and child

Exclusion Criteria:

Documented micronutrient supplementation other than vitamin A in the preceding month Less than 60% of mean weight for age by NCHS guidelines (micronutrient intervention obligatory according to WHO guidelines for management of severely malnourished children) Persistent diarrhea (\>=7 days) at the time of study enrollment Exclusive breastfeeding Infants in whom a second confirmatory HIV test cannot be obtained (when required) Co-enrollment of the infant in other clinical intervention trials e.g. antibiotic or vaccine trials
B: Inclusion Criteria:

* Children in the age group 6-30 months
* Either sex

Exclusion Criteria:

* Refused consent
* Likely to move out of study area within the next four months
* Urgent admission to hospital on the enrollment day
* Had received massive dose of vitamin A within the two months before enrollment
C: Inclusion Criteria:

* Males
* Age 1 month up to 36 months:
* Passage of 3 or more liquid stools in a 24-hour period, every day, and at least one in 12 hours prior to admission
* Diarrhea for \< 7days (168 hours)

Exclusion Criteria:

* severe systemic illness requiring intensive care management; systemic infection will be suspected if there is a general appearance of non-wellbeing with one or more of the following symptoms: shrill cry and irritability, temperature instability, hypotension, hypoglycemia, altered sensorium, lethargy or refusal of feeds, abdominal distension.
* chronic illness like Tuberculosis, Nephrotic syndrome, malignancy etc or any surgical disorder.
* severe malnutrition (weight for age \<65% of NCHS median
* gross blood in stool
* refusal of consent
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: A