Data from the reports of the American Centers for Disease Control and Prevention (CDC) indicate that after taking the booster less often than after the basic vaccination schedule, complaints related to the body's adverse reaction to the preparation appear. The analyzes also confirm the high level of protection against severe disease resulting from the booster dose.
Booster safe and effective
The first analysis involved a review of data from two vaccine safety monitoring systems. The researchers found that people 18 years of age and older who received the same brand of mRNA vaccine for all vaccinations experienced significantly fewer adverse reactions after administration of the booster than after the second dose of mRNA vaccine.
The second study confirms that a booster dose of an mRNA-based vaccine offers a high level of protection against severe disease, even months after ingestion. This emphasizes how important it is to take vaccinations "on a regular basis" as soon as we qualify for a booster.
CDC analyzed data on over 93,000 hospitalizations and 241 emergency departments, as well as urgent visits to 10 US states during the waves of the Delta and Omikron pandemic. About 10 percent of the studied cases of patients received booster doses of vaccines, and more than 50%. of the hospitalized persons were over 65 years of age. It turned out that the effectiveness of the preparation against hospitalization as a result of COVID-19 was 91%. in the first two months after taking the booster and remained high (78%) for at least four months after the booster dose.
Which NOPs were the most frequent?
Fever, headache, and muscle aches were the most frequent reactions after booster doses, but as much as 92%. the complaints were not considered serious. The data show that rarely medical care was needed after the administration of the SARS-CoV-2 vaccination booster. Importantly, the conducted studies show that adverse reactions to vaccination against COVID-19 occurred more often in people who took a different preparation than during the basic regimen.
In total, 39,286 reports were submitted to the voluntary reporting of adverse vaccine reactions (VAERS databases), of which 7.6% (3004) was serious.
Episodes of myocarditis following booster dose
Myocarditis is one of the complications that people who are not convinced to vaccinate most fear. The conducted analyzes showed, however, that cases of myocarditis after taking the booster are even less frequent. A total of 37 such situations have been reported in the United States, most commonly seen in young men booster doses of Moderna (aged 19-24).
Myocarditis is most common in the young population, so it is difficult to determine if it has developed due to vaccination, but experts point out that nearly half of cases are mild and often asymptomatic.