Experts have found that COVID vaccines are associated with an increased risk of heart, blood, and nervous system disorders, according to the largest study of its kind. The British newspaper "Daily Mail" reported that an international coalition of vaccine experts examined "13 medical conditions" among 99 million people who received COVID vaccines in eight different countries, in order to identify which medical cases were most prevalent after vaccination.
Researchers determined that the doses provided by Pfizer, Moderna, and AstraZeneca were significantly linked to the risk of five medical conditions, including nerve damage, which can impair individuals' ability to walk or think. The study also cautioned about other disorders that require further investigation, including the association between brain swelling and the Moderna vaccine, as well as the risk of a neurological condition known as Guillain-Barré syndrome.
Guillain-Barré syndrome is a rare disorder where the body's immune system attacks the nerves. However, the research team stated that "the absolute risk of developing any of these conditions remains low." For instance, among the 13 billion vaccine doses administered, only 2,000 medical cases were recorded among the various conditions.
In this regard, Harlan Krumholz, director of the Yale New Haven Hospital Center for Outcomes Research and Evaluation and the principal investigator of the study, remarked: "Both things can be true. COVID vaccines can save millions of lives, and there can also be a small number of people who are adversely affected." Estimates suggest that COVID-19 vaccines have helped prevent more than 19 million deaths worldwide, including 3 million cases in the United States alone.
