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Gradus83 t1_j943ikk wrote

Recommendations for vaccines are made globally for each flu season, but it’s important to note that there are actually two “flu seasons” in a year, the northern hemisphere and the southern (corresponding to winter in each). The recommendations are made every 6 months, so other parts of the world may have a different vaccine in the same calendar year.

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MYprivacyisimportant t1_j967g3k wrote

so if you spent winter in the southern hemisphere and then winter in the northern hemisphere would a doctor recommend getting both vaccines?

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Yda_Raven t1_j9h9xgd wrote

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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