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It depends on the vaccine. Some vaccines use a "weakened" form of the pathogen to trigger immunity response without causing actual disease, but sometimes, espec
by freehorse 4y ago
It depends on the vaccine. Some vaccines use a "weakened" form of the pathogen to trigger immunity response without causing actual disease, but sometimes, especially in cases of weaker immune systems, this can cause actual disease. This is not the case with most modern vaccines as they use different methods (and certainly not of covid19 vaccines), and certainly not what antivaxxers usually talk about (if anything, covid19-antivaxxers for example were proponents of getting _real_ infection instead of vaccine).
- Izkata 4y ago> Some vaccines use a "weakened" form of the pathogen to trigger immunity response without causing actual disease For anyone who wants to look up more, the word "attenuated" is used to describe this. > This is not the case with most modern vaccines It's actually really common, just not with flu shots: https://www.hhs.gov/immunization/basics/types/index.html https://www.hhs.gov/immunization/basics/types/index.html