An occupation based vaccine program has never been tested before on a large scale in the UK it is in that sense, untested and untried, so trying to switch from an age based program to an occupation based program will be more complex and potentially introduce more delays to the program.
基於職業的疫苗計劃在英國從來沒有進行過大規模的測試,從這個意義上來說,它是未經測試和試驗的,是以,試圖從基於年齡的計劃轉換到基於職業的計劃將更加複雜,並可能為計劃帶來更多的延遲。