Just got my second Moderna shot almost 2 days ago. The redness is spreading in a line by my armpit. Should I call them or just watch? It itches horribly.

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I would call especially if it’s spreading and starting to itch.

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I would call the dr.

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I would call if it's itchy. Might be a minor allergic reaction or something

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It’s normal. Moderna is a larger initial dose than Pfizer, 0.5mL compared to 0.3mL which is most likely cause of the local reaction “Moderna arm”

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Totally normal side effect called “Covid arm.” I had it too with my moderna vaccine, went  away in a few days.

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