Lack of vaccine side effects no cause for concern: study

Antibodies are not lower in those who did not report systemic symptoms following immunisation with mRNA COVID-19 vaccine, reports a pre-print paper
Reuters Health

A lack of side effects following COVID-19 vaccination does not mean it has failed to work, confirms new research.

While a variety of side effects after receiving an mRNA vaccine may be a sign of the immune system kicking into high gear – the opposite is not true, reports a pre-print paper on medRxiv ahead of peer review.