Subtle morbidity cohort studies

Subtle morbidity cohort studies are comparing measures of health and well-being among children in the high prevalence villages that are to receive the most intensive measures (annual community-wide MDA) with outcomes among those receiving the least intensive measures (school-based treatment MDA with two of four years being drug holidays).

These studies include evaluation of changes in anthropometric measures, abdominal ultrasounds, the shuttle run test as a measure of fitness, and quality of life.

These studies were implemented in 2011 in the gaining control of schistosomiasis study countries.