Vaccine side effects – Jamaica Observer

IF someone gets a headache or feels a bit under the weather after receiving a COVID-19 vaccine, it’s become common to hear them say something like, “Oh, it just means my immune system is really working hard.” On the flip side, when people don’t notice any side effects, they sometimes worry the shot isn’t doing its job or their immune system isn’t reacting at all.
Is there any link between what you can notice after a vaccine and what’s happening on the cellular level inside your body?
Robert Finberg…

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