Part A looks good but part B is going to need a bit more work. Part B focuses too much on the dynamics of the virus (its properties, transmission etc). The below questions need to be answered more clearly in part B (currently it is not):
Describing how previous policy has attempted or not attempted to address the issue and any shortcomings of previous policy
Evidencing why your proposed policy fills a gap and why it is likely to be successful
Describing the pros and cons of your proposed policy in terms of potential intended and unintended consequences.
Considering any limitations and providing recommendations for how your policy should be effectively implementation

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