People who received the Moderna COVID-19 vaccine reported more side effects than those who got the Pfizer/BioNTech shot, according to a recent study by the Centers for Disease Control and Prevention (CDC).
More than 46 million Americans had gotten at least one dose of the vaccine by Feb. 21.
The participants were asked about their “postvaccination experience,” including occurrences of adverse events within seven days after being vaccinated. The report included only local or systemic reactions and did not include severe side effects like anaphylactic shock, which will be addressed in a later study.
Of those who received one dose of the messenger RNA vaccine, 74 percent of Moderna recipients reported injection site reactions of pain, swelling, redness, and itching, as opposed to 65.4 percent of the Pfizer/BioNTech recipients.
Furthermore, 52 percent of those who received the Moderna vaccine said they had a generalized reaction like fatigue, headache, and body pain, compared to 48 percent of recipients who had the Pfizer/BioNTech vaccine.
Both local and systemic reactions occurred more frequently after the second dose for both vaccines: Moderna recipients reported 82 percent and 74 percent, while Pfizer/BioNTech recipients reported 69 percent and 64.2 percent, respectively.
“For both doses of both vaccines, the percentage of v-safe participants who reported local and systemic reactions was highest on day 1 after vaccination and declined markedly through day 7,” the authors said.
In addition, people aged 65 and older were less likely to experience adverse reactions than those younger than 65, regardless of which vaccine was given.
Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases (NIAID), said that most adverse reactions occur between 15 to 45 days following vaccination.
Fauci was addressing concerns of whether people may file a lawsuit against the vaccine manufacturers if they experience adverse reactions five or 10 years after receiving an inoculation. He said that there is a “fund that allows the compensation for injury.”
Signs of severe allergic reactions include throat tightness, nausea, dizziness, agitation, and a sudden increase in secretions from the eyes, nose, or mouth.
Symptoms of anaphylaxis often occur within 15 to 30 minutes of vaccination, though it can sometimes take several hours for symptoms to appear.
More than 114 million people have received at least one dose of the COVID-19 vaccine and over 68 million people have been fully vaccinated as of April 9, according to the CDC.
The Epoch Times has reached out to Moderna for comment.