Please select the eligibility criteria that correspond to the clinical trial below.
Title: Cracking the Egg Potential: Improving Young Child Nutrition in Ecuador
Brief Summary: The proposed study will fill an important gap in the literature by examining, through a randomized controlled trial, the effect of egg consumption on biochemical markers of choline, vitamin B-12, lipids, and amino acids in young children in a poor rural area of Ecuador. Children from Cotopaxi Province, Ecuador (n=180) will be randomized into one of two groups: 1) intervention, receiving one egg per day for six months; or 2) control. Baseline and endline data on socio-economic factors, and child diet, morbidities, and anthropometry will be collected. Blood will also be drawn from the children at these time points for nutrient biomarker analyses. Through qualitative research the proposed study will provide insight into the attitudes, beliefs, and use of eggs by mothers and other caregivers during the complementary feeding period. The University of San Francisco in Quito (USFQ) will be the lead field coordinator of the research working in partnership with Washington University in St. Louis, Pan-American Health Organization (PAHO) and University of California, Davis.


Options:
A: Inclusion Criteria:

* child is healthy and between the age of 6 months to 9 months

Exclusion Criteria:

* age of child
* any reactions to eating to eggs, a rash, hives, difficulty breathing
B: Inclusion Criteria:

* 1-5 months of age
* Formula fed
* On breast milk less than 1 month
* Healthy
* Term Birth (36-42 weeks)
* Appropriate for gestational age

Exclusion Criteria:

* Congenital anomalies that impact feeding, growth, or development
* Low birth weight
* Not able to consume milk-based formula
* Known chronic diseases or allergies affecting protein consumption/digestion
C: Inclusion Criteria:

* Inclusion criteria for clusters: Each cluster will be a rural community characterized by inhabitants with low income and served by one community health center. A primary criterion is that national or other available statistics indicate a prevalence of stunting (mean length for age Z-scores in second year \< -2) of at least 20% in young children.
* Inclusion criteria for individual families:

  * Infant aged 3-4 months;
  * Primarily or exclusively breast feeding with intent to continue breast feeding through at least 1 year.

Exclusion Criteria:

* Exclusion criteria for individual families: Exclusion criteria include any population/family that is receiving or likely to receive free or subsidized complementary foods (or infant formula) through the health system or NGOs; any individual families who are feeding or intend to feed fortified infant formula or micronutrient-fortified commercial complementary foods.
* Exclusion criteria for infants: Infants meeting the following criteria will be excluded from participation:

  1. known congenital anomaly;
  2. infant of multiple births;
  3. known neurological deficit apparent at the time of enrollment (including seizures).
D: Inclusion Criteria:

* 3 months of age

Exclusion Criteria:

* birth wt \<2000 g
* any chronic disease or condition that affects growth
* not breastfed

Answer: A