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Burden of Disease
Effect of undernutrition as defined by the World Health Organization(WHO) which is high in Sub –Haran Africa(Southern, East,  West Africa) high not documented.
The disease has become one of high level international priority.
The number of COVID 19 cases in HIIV Burden countries e.g Most of Southern Africa versus low HIV burden countries need to be well described.
Strategies for Immune evasion by COVID 19 and hence current strategies for vaccine development needs to be documented.
More than 35 clinical vaccine trials being under taken world wide.