Covid vaccine: Four Pfizer trial participants developed facial paralysis, FDA says

New documents have revealed that four participants in the Pfizer coronavirus vaccine trial developed Bell's palsy - a condition that causes a temporary weakness or paralysis of the muscles in the face. The patients were taking part in the US vaccine trial, which included 38,000 participants. The Bell’s palsy is believed to be unrelated to the vaccine, with cases in the trial occurring at the same rate as in the general population. A document by the FDA said: “Among non-serious unsolicited adverse events, there was a numerical imbalance of four cases of Bell’s palsy in the vaccine group compared with no cases in the placebo group, though the four cases in the vaccine group do not represent a frequency above that expected in the general population.”