Covid Booster Side Effects Cdc. Well, the study byhe t cdc shows around 75% of those who receive the booster shot expericeen someor st of side effects, i could be a fever, headache or body. (adds comments from cdc official, context) by.
But an official from the u.s. In total, 44 out of 306 participants had at least one unexpected side effect, like swollen lymph nodes, cnbc reports. Pain at the injection site.