UpAlthough the rate of severe allergic reactions is higher than in the general population, everyone with an allergic response been treated successfully, and no other serious problems have turned up among the first 22 million people vaccinated, according to the Centers for Disease Control and Prevention.

Early safety data from the first month of COVID-19 vaccination finds the shots are as safe as the studies suggested they’d be.

The data was collected from several tracking systems, including a voluntary system where people who are vaccinated report their symptoms via text. Another allows people who believe they have been harmed by a vaccine to contribute their information and a third collects reports from medical records.

In a Wednesday meeting, Dr. Tom Shimabukuro, deputy director of the CDC’s Immunization Safety Office, briefed a CDC advisory committee on the agency’s review of safety data collected so far on the two authorized vaccines.

Side effects remain a common result of both the Pfizer-BioNTech and Moderna vaccines, with 70% of people who self-reported saying they suffered pain.

Vaccinated people have suffered major health crises and even death within a few days of receiving a shot. But the rate of those events is no higher than would be expected in the general population and cannot be connected to the vaccine, the review found.

More than 9,000 people reported side effects following vaccination to the CDC’s Vaccine Adverse Event Reporting System, or VAERS. Just under 1,000 of those reports were considered serious. The majority of complaints involved headaches, fatigue, dizziness, nausea, chills, fever and pain.

A third safety reporting system, called the Vaccine Safety Datalink, looks at medical records from nine participating health care organizations, including data on more than 12 million people per year. More than 162,000 people in the system have received at least one COVID-19 shot