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Description
Miller JW

## **Documentation requirements** Documentation should include: - The diagnosis or condition showing low serum vitamin B12, pernicious anemia, or other diseases classified by B-group deficiencies

J Postgrad Med 2013;59:253-7
Vitamin B12 is understood to help prevent fatigue, and in doing so, help the athlete maintain energy levels and improve endurance so they can compete at the highest levels during sporting events

But, you should weigh the consequences of not getting the vaccine, given the above information
