The current Pfizer and Moderna Covid-19 vaccines seem to be safe and adverse events seem to be rare, according to a presentation at the US Food and Drug Administration’s Vaccine and Related Biological Products Advisory Committee meeting Friday.
The number of reports of people having a reaction to the vaccine seem to be similar to what was reported during the clinical trials, according to the US Centers for Disease Control and Prevention’s Dr. Tom Shimabukuro.
The CDC looked at reports of adverse reactions through Feb. 16. At that point, 55 million doses had been administered in the US.
There were just more than 100,000 reports of which 94% were considered “non-serious” and 6% met the regulatory definition of “serious.”
The reports were gathered in a passive surveillance system co-managed by the CDC and the FDA, called V-safe. The system can rapidly detect safety signals if there is a problem with any of the vaccines.
“The reactogenicity profiles of the mRNA vaccines in V-safe are consistent with what was observed in the clinical trials,” Shimabukuro said. “Anaphylaxis does occur, though rarely, and there's no safety signals for any serious adverse events,” he added
He added anaphylaxis – a severe allergic reaction-- is also treatable. The CDC guidelines say that people who get the vaccine must stay on location to be observed for 15 to 30 minutes after receiving their shot, that way if they have breathing problems, trained medical personnel can quickly help.
The CDC will continue to monitor the safety of people who receive the vaccines.