One of the things that a delivery team needs to do, often in collaboration with product management, is choose the release cadence of their product. This is an important aspect of, you guessed it, release planning. Your release cadence defines how often you release your solution both internally and externally into production (or the marketplace). The issue is how to determine how often the product should be released into production.
Prevalence of vitamin A deficiency. Vitamin A deficiency (VAD) is a lack of vitamin A in humans. It is common in poorer countries but rarely seen in more developed countries. Nyctalopia (night blindness) is one of the first signs of VAD.Xerophthalmia, keratomalacia, and complete blindness can also occur since Vitamin A has a major role in phototransduction.yctalopia (night blindness) is one of the first signs of VAD. Xerophthalmia, keratomalacia, and complete blindness can also occur since Vitamin A has a major role in phototransduction.
2 PREFACE Vitamin A deficiency affects 190 million; pre-school children in the World Health Organization (WHO) regions of Africa and South East Asia 1. In South Africa in particular, 63.6 % of children age 1-9 years were found to be vitamin A deficient in 2005 National Food consumption survey.Vitamin A deficiency is a major contributor to under-five mortality and can cause visual impairment and increase the risk to illness and death due to measles and diarrhoea..2. Situational Analysis of Vitamin A supplementation in South Africa The Department of Health launched a national vitamin A supplementation (VAS) program in 2001 following the 1994 SAVACG survey which showed that vitamin A deficiency was a public health problem in South Africa.