What caused the flu vaccine crisis?
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Caroline
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D006801:Humans; D007252:Influenza Vaccines / Q000191:economics / Q000600:supply & distribution*; D007251:Influenza, Human / Q000517:prevention & control*; D009726:Nurses; D012307:Risk Factors; D013222:State Medicine; D006113:United Kingdom
D007252:Influenza Vaccines