rezonansmagnetyczny t1_j937wgx wrote on February 18, 2023 at 10:12 PM Reply to Are the flu strains we vaccinate against more or less the same world-wide? by heyheyhey27 It's a global surveillance system. We look at past years and what strains currently circulating in the hemisphere of the earth where it's winter. We try to match that, but it's not perfect. Not all strains of flu work well in vaccines, some don't grow well in culture and some we just get wrong Permalink 27
rezonansmagnetyczny t1_j937wgx wrote
Reply to Are the flu strains we vaccinate against more or less the same world-wide? by heyheyhey27
It's a global surveillance system. We look at past years and what strains currently circulating in the hemisphere of the earth where it's winter.
We try to match that, but it's not perfect.
Not all strains of flu work well in vaccines, some don't grow well in culture and some we just get wrong