Vitamin A supplementation in children aged 1-4 is an important intervention for improving health and mortality rates in developing countries. Improvements of 20-30% have been observed.
Gogia and Sachdev have looked at the value of supplementation in reports on babies aged less than 1 month. There was no benefit from such intervention
Gogia and Sachdev 2009 Neonatal vitamin A supplementation of mortality and morbidity in infancy: systematic review of randomised controlled trials . BMJ vol 338 pp 871-875
- Martin Eastwood