People who have been vaccinated by Moderna COVID-19 vaccine stated they have more side effects.
The reports are true: people who got the Moderna COVID-19 vaccine stated that they have more side effects than people who got the Pfizer/ BioNTech shots.
The study has analyzed reports collected via Centers for Disease Control and Prevention program named v-safe. It is a text message-based program designed to track the side effects in vaccine receivers. For the first week after each vaccine dose, people who enroll are prompted to fill out a daily survey about any symptoms or arm pain.
More than 3,600,000 people who got their first dose of a COVID-19 vaccine before February 21st have enrolled in v-safe and checked in at least once. Around 70% of those people stated they had some kind of injection site reaction, more like pain or swelling, and half had a more generalized reaction like fatigue or chills. People who got a Moderna shot were more likely to have a side effect – 73% of them had an injection site reaction, compared with 65% of people who got a Pfizer/BioNTech dose. Around 51% of Moderna recipients had full-body symptoms, compared with 48% of people who received Pfizer/BioNTech.
The numbers went enormous after the second dose. Around 1.4 million people who completed those check-ins. Almost 82% of people who got their second Moderna shot had an injection site pain versus the 69% of people with Pfizer/BioNTech. In total, 74% of people stated they had general reactions after their moderna shot, compared with 64% of people who got Pfizer/BioNTech. The largest difference was for chills, which were experienced by 40% of people who took Moderna and only 22% of people who have taken Pfizer/BioNTech dose.
People aged over 65 were also less likely to have side effects than people under 65, regardless of what vaccine they received.
However, the study didn’t include information on how severe the participant said the side effects were, so it is not clear if one vaccine triggers more disruptive effects than another. Additionally, the people using v-safe may not be a representative sample of people getting shots. Around 10% of people signed up for the program after they have been vaccinated.
Overall, the side effects and frequency of the side effects were the same to the ones seen in clinical trials testing the vaccines. The clinical trials gave the researchers and doctors an accurate look at the types of side effects people could expect after they eventually got their shots.
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