Acute onset supraclavicular lymphadenopathy coinciding with intramuscular mRNA vaccination against COVID-19 may be related to vaccine injection technique,Spain, January and February 2021 |
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Authors: | María Fernndez-Prada Irene Rivero-Calle Ana Calvache-Gonzlez Federico Martinn-Torres |
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Abstract: | Monitoring adverse reactions following immunisation is essential, particularly for new vaccines such as those against COVID-19. We describe 20 cases of acute onset of a single supraclavicular lymphadenopathy manifesting between 24 h and 9 days after ipsilateral intramuscular administration of an mRNA-based COVID-19 vaccine, referred to our WHO Collaborating Centre for Vaccine Safety. Our results indicate that the swelling of supraclavicular lymph nodes following immunisation may constitute a benign and self-limited condition, related to a higher than recommended injection site. |
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Keywords: | COVID-19 mRNA vaccine Vaccine adverse events supraclavicular lymphadenopathy |
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