As per WHO, what percent prevalence of Bitot’s Spot in preschool children is indicative of public health significance –

Correct option is A

According to the World Health Organization (WHO), the prevalence of Bitot’s spots in preschool children exceeding 0.5% is considered indicative of public health significance. Bitot’s spots are a sign of Vitamin A deficiency, and their presence at this level suggests a need for intervention to address the nutritional deficiency.
Information Booster: Bitot’s spots are white, foamy spots that appear on the conjunctiva (the membrane covering the white part of the eye) and are considered a clinical sign of Vitamin A deficiency (VAD). Vitamin A is crucial for maintaining good vision, immune function, and skin health. The WHO defines a prevalence of more than 0.5% of preschool children showing Bitot’s spots as a public health concern, as it signals widespread Vitamin A deficiency in the population, which can lead to severe health issues like blindness and increased susceptibility to infections.
Additional Knowledge:
· >0.05% (Option b) would be too low to indicate a significant public health issue.
· >1.05% (Option c) and >1.5% (Option d) would indicate a more severe level of Vitamin A deficiency, but the WHO sets the threshold for public health significance at 0.5%, with intervention needed to reduce the prevalence.