I have swelling and soreness in one armpit after some...

Question: 

I have swelling and soreness in one armpit after some immunizations. Should I be concerned?

Answer: 

Soreness, redness, and swelling where the vaccine was given is a common harmless side effect of vaccines but will generally subside after a day or two.  We recommend that you call your local public health unit and ask to speak to a public health nurse who will be able to do a further assessment. You can find the number here.

Immunization Nurse