![]() The vaccine technology had been studied in vaccines against other viruses, such as influenza, rabies and Zika, as well as in treatments for cancer.īecause of this, we know well how mRNA functions in a vaccine. MRNA vaccines had been studied for decades before COVID-19 emerged. Proteins are used by cells to perform our bodily functions. RNA stands for ribonucleic acid, a molecule that contains the genetic blueprint for our cells to make proteins. The Pfizer and Moderna vaccines are both messenger RNA vaccines, or mRNA vaccines. MRNA technology isn’t brand-new, and mRNA degrades quickly in the body This is what gives scientists and public health officials confidence in COVID-19 vaccines’ long-term safety - if there were significant side effects, they very likely would have been discovered by now. The safety monitoring systems have been able to detect very rare adverse effects - all of which occurred within days or weeks following vaccination. A study from Case Western Reserve University found that young men were up to six times more likely to develop myocarditis after COVID-19 infection compared to those who received the vaccine. The highest rate was seen in young men (18-29 years). A recent report from the CDC estimated the rate of this rare effect at approximately 3.5 cases per million complete vaccine series. The cases tended to be mild and self-limited (meaning the patients recovered without intervention). Myocarditis - This is inflammation of the heart muscle that was detected within days of vaccination with mRNA vaccines.It’s much more common to get Guillain-Barre syndrome after a viral infection, including COVID-19, than it is to develop the condition from a vaccine. A recent report from the CDC estimated the rate of this rare effect at approximately 7.8 cases per million doses. Guillain-Barre syndrome - This is a rare syndrome, causing a temporary paralysis, that occurred within days of vaccination of the adenoviral vector vaccine.A study from the University of Oxford found that the risk of cerebral venous thrombosis after COVID-19 infection was nearly 15 times higher compared to the rate following vaccination. It was more common in women of child-bearing age. ![]() A recent report from the CDC estimated the rate of this rare effect at approximately three cases per million doses. Thrombosis with thrombocytopenia syndrome (TTS) - This is a rare syndrome of blood clots (cerebral venous thrombosis) associated with low platelets that occurred within a few weeks of vaccination of the adenoviral vector vaccine (the Johnson & Johnson vaccine).There are several robust safety monitoring systems in place for these vaccines that can detect the very rare adverse events, including: The vaccines have been shown to be extremely safe. Going back at least as far as the polio vaccine, which was widely released to the public in the 1960s, we’ve never seen a vaccination with long-term side effects, meaning side effects that occur several months or years after injection.Īnd, in every vaccine available to us, side effects - including rare but serious side effects - develop within six to eight weeks of injection.ĬOVID-19 vaccines have been studied in humans for more than a year now, and more than 174 million people have been fully vaccinated in the United States alone. One thing we can do is look at all vaccines we’ve produced and studied over time. It’s a concern for many who are still hesitant to get the COVID-19 vaccine: How could we possibly know whether long-term side effects are possible, when COVID-19 vaccines just began clinical trials in 2020? Find our most recent COVID-19 blog posts here, and learn the latest in COVID-19 prevention at the Centers for Disease Control and Prevention. Editor’s note: As what we know about COVID-19 evolves, so could the information in this story. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |