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| FDA mandated testing, which is particularly | extensive for vaccines Is that really the case for the flu vaccines that they have to make 'on the fly' speci
by pyre 13y ago
| FDA mandated testing, which is particularly
| extensive for vaccines
Is that really the case for the flu vaccines that they have to make 'on the fly' specific to each flu season and the new strains out there?
What about the other vaccines mentioned here, where children get 3 or 4 vaccines at once by convention? How do you know which ones are causing adverse reactions?
- hga 13y agoYes, because the vaccines are the same year to year except for the precise seed strains used (and those are developed by specialists who provide some degree of regularity), which provide the precise sequences of amino acids that make up the two relevant viral proteins. Otherwise they're as identical as possible, the least reasonable amount of chicken "stuff" left in, the preservatives used, etc. And I'm pretty sure there is some testing done before new batches are tried out on the whole population. As for "how do you know which ones are causing adverse reactions", why do we care? I would assume if they're bad enough the child isn't given any more, so which causes what is irrelevant (remember, we know this is going to happen, these vaccines are licensed with that understanding). If less severe, I'm sure there are protocols to address this so the child can get further vaccinations with reasonable safety (e.g. you can test with a very small amount to see if one causes a reactions ... and, hmmm, that should do for the severe reactions as well).