[Effect of zinc amino acid chelate and zinc sulfate in the incidence of respiratory infection and diarrhea among preschool children in child daycare centers].

Introduction: Zinc deficiency is common in children among populations in developing areas. Zinc deficiency alters the immune system and the resistance to infections.

Objective: To evaluate the effect of two zinc compounds in the prevention of acute respiratory infection and acute diarrhea.

[Effectiveness of iron amino acid chelate versus ferrous sulfate as part of a food complement in preschool children with iron deficiency, Medellín, 2011].

Introduction: Iron depleted deposits are the first link in the chain of events leading to iron deficiency which is the most prevalent nutritional shortage and main cause of anemia worldwide. This situation can be prevented through food fortification.

Objective: To compare the efficacy of amino acid chelate iron with ferrous sulfate as fortifier of a dietary complement in preschoolers with iron deficiency.