Tropicana presented a certificate acknowledging the donation during a press conference at New York's Hotel W, to announce the introduction of their Pure Premium Grovestand Calcium Orange Juice and Pure Premium Ruby Red Calcium Grapefruit Juice. Persistent diarrhea is an episode that begins as acute diarrhea, but continues for fourteen days or longer. Its cause is not completely understood, but it affects many children every year, especially in the developing world.
Many more children die from persistent diarrhea than from the acute form of the disease.
Many treatment plans have been studied, but the Peruvian team plans to investigate the cause, hoping that this will help in solving the mystery of why some children get prolonged bouts of diarrhea and others do not. Thus they will be able perhaps to prevent or at least better treat these episodes. Using laboratory tests to determine the values of the fecal osmolar gap, the team will define whether their child subjects have osmotic or secretary diarrhea. In osmotic diarrhea, the gut holds a concentrated solution that pulls liquid passively from the gut mucosa into the gut. The secretory type, on the other hand, means that the intestinal mucosal cells themselves are secreting fluid into the gut due to an active process within the cells.