Massive dose vitamin A programme in India--need for a targeted approach

Area of Science:

• Public Health
• Nutrition Science
• Ophthalmology

Background:

• The National Prophylaxis Programme against Nutritional Blindness due to vitamin A deficiency (VAD) was initiated in 1970 to combat keratomalacia and xerophthalmic blindness.
• Significant improvements in child health indicators, including reduced undernutrition and increased immunization coverage, have been observed over the past 40 years.

Purpose of the Study:

• To evaluate the continued relevance and optimal strategy for vitamin A supplementation in preschool children.
• To assess the impact of improved healthcare and reduced VAD prevalence on the efficacy of prophylactic vitamin A mega-dosing.

Main Methods:

• Review of historical data and current epidemiological trends in VAD prevalence and childhood mortality.
• Analysis of evidence regarding the benefits of prophylactic mega-dose vitamin A supplementation in diverse healthcare settings.

Main Results:

• Clinical VAD, keratomalacia, and Bitot spots have significantly declined.
• The claimed 23% reduction in childhood mortality from vitamin A mega-doses is primarily observed in areas with poor healthcare and high deficiency rates.
• Substantial heterogeneity exists in trial results, particularly in the current era of improved healthcare.

Conclusions:

• Universal prophylactic mega-dose vitamin A supplementation is no longer justified given the decline in VAD prevalence and improved healthcare.
• A targeted approach to vitamin A supplementation in preschool children is urgently needed.
• Resource constraints and competing health priorities necessitate a shift from universal to targeted VAD prevention strategies.