Submitted by heyheyhey27 t3_115nexy in askscience
Yda_Raven t1_j9h9xgd wrote
Reply to comment by MYprivacyisimportant in Are the flu strains we vaccinate against more or less the same world-wide? by heyheyhey27
Depends if there has been a strain change in the vaccine for either hemisphere. Some years it remains the same for both, in which case no you could probably just have the 1.
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