Many people are or were afraid of the possible side effects of the corona vaccines. A large-scale study from the USA shows that side effects are mostly harmless and vaccination reactions go away after one or two days.
A new study using data from millions of people vaccinated across the United States has found that most side effects of mRNA vaccines against the coronavirus are harmless and usually disappear after a day or two. The results were published in the journal The Lancet Infectious Diseases.
Similar to Germany, vaccination side effects can also be reported in the USA. In Germany, doctors or vaccinated people can report symptoms themselves that have occurred after a vaccination. In the USA there is an equivalent (VAERS). Vaccinated persons, doctors and vaccine manufacturers can report side effects here. Another system was created for the corona vaccination program in the USA to evaluate possible side effects of the corona vaccines. The system. These are smartphone surveys that users are sent daily in the first week after the vaccination and are asked about possible side effects. In the following months, the questions will be sent out at greater intervals.
dr Hannah Rosenblum of the Centers for Disease Control and Prevention (CDC) says: “Vaccines are the most effective means of preventing serious consequences from COVID-19 infection and the benefits of vaccination in preventing serious illness and death speak strongly for one Vaccination Surveillance of the safety of Covid-19 vaccines is the most robust in U.S. history, and the two complementary surveillance systems used in this study should increase confidence that mRNA vaccines against Covid-19 are safe. “
92 percent of the vaccination side effects were classified as harmless
In the study, the researchers evaluated available data from the VAERS database and the “v-safe” program between December 2020 and June 2021. 298 million doses of mRNA vaccines from manufacturers Moderna and Biontech/Pfizer were administered during this period.
In the VEARS database, vaccination side effects are classified as “harmless”, “critical” or “fatal”. VEARS has received over 340,000 reports of adverse events from Covid-19 vaccines. Around 92 percent were classified as harmless. The most common vaccination reactions were headaches (around 20 percent), tiredness (around 17 percent), fever (around 16 percent) and pain (around 15 percent). 6.6 percent of those surveyed experienced side effects that were classified as worrying. The most common was shortness of breath (around 15 percent).
Almost 4,500 deaths (equivalent to 1.3 percent) were documented in connection with the vaccination. These deaths were reported regardless of a possible link to the corona vaccination. The researchers were unable to identify any unusual patterns in their study. The mean age of the deceased was 76 years. CDC’s David Shay, who worked on the study, said the data reflect the deaths researchers would expect when studying an elderly population.
Vaccination reaction stronger after the second dose
The scientists also evaluated the data from the “v-safe” smartphone surveys. Eight million people took part here. Respondents mostly reported local and systemic reactions after vaccination. After the second dose, they occurred more frequently. Almost all of the vaccination reactions were classified as mild. Fatigue was the most common, 34 percent after the first dose and 56 percent after the second. Headaches occurred in 27 percent after the first and 46 percent after the second dose. Sixty-six percent of respondents reported pain at the injection site after the first dose and 69 percent after the second dose.
dr Tom Shimabukuro, author of the study from the CDC, says: “These data are reassuring. Responses to both mRNA vaccines are generally mild and resolve in a day or two – confirming reports from clinical trials and post-marketing surveillance .”
As limiting factors, the researchers state that not all vaccinated people in the USA were able to take part in VAERS and “v-safe” and that the results are only partially representative of the general population. Since vaccinated people need a smartphone to take part in the “v-safe” program, certain groups of people are excluded. The researchers state that they could not establish a causal relationship between vaccination and adverse events.
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Source: Stern
