Enlarged lymph nodes after vaccination

A locally enlarged lymph node usually refers to immunological activity after vaccination. In particular, vaccines containing live pathogens effectively form antibodies in the lymph nodes closest to the vaccination site.

An enlarged lymph node is usually detected within one week of vaccination.

Treating enlarged lymph nodes

While enlarged lymph nodes do not require treatment, they must be monitored. A physician’s assessment is necessary if the lymph node is not getting any smaller.

Follow-up vaccinations

Give follow-up vaccinations as normal.

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Lymph node reactions following BCG, or tuberculosis, vaccination