Define cause of vitamin a deficiency - Infections?

During acute infections, vitamin A intake in preschool children is reduced due to impaired appetite and impaired vitamin A absorption as in acute diarrhoea and respiratory infection, and, consequently, serum levels of vitamin A are significantly reduced during acute infections. An infective episode of diarrhoea and respiratory infection and an attack of measles can aggravate vitamin A deficiency. Vitamin A deficiency is often associated with ascariasis and giardiasis. You learnt about the causes of vitamin A deficiency. Let us now look at how we can treat vitamin A deficiency.