My 18 months old daughter got her immunization on her left...

Question: 

My 18 months old daughter got her immunization on her left arm. But it start swelling. Please let me know why is this happening. ?

Answer: 

Common reactions to vaccines may include soreness, redness and swelling where the needle went in. This could be a normal reaction but if you have concerns please contact your local public health unit, immunization provider or call the BC Nurse Line at 811. You can find the number for your local health unit here.

Immunization Nurse