'When one system detects a signal, the other safety monitoring systems are checked to validate whether the signal represents an actual concern with the vaccine or if it can be determined to be of no clinical relevance.' Moderna's bivalent vaccine didn't spark the same preliminary signal, health officials said, and no changes in vaccine recommendations have been made for any age group. 'All signals require further investigation and confirmation from formal epidemiologic studies,' health officials said. Though it merits investigation, the CDC said it's 'very unlikely' there's a true clinical risk, as the many other monitoring systems - including the Vaccine Adverse Event Reporting System, or VAERS a preliminary study from the Veterans Affairs database and Pfizer-BioNTech's global vaccine safety database - haven't found any increased risk of ischemic stroke within 21 days of vaccination compared with 22 to 42 days post-vaccination. Older adults have the highest risk of hospitalization and death from COVID-19, which are prevented by boosters and vaccines. Out of a priority for 'transparency and vaccine safety,' the US Centers for Disease Control and Prevention and US Food and Drug Administration said in a joint statement Friday that one of the many systems meant to monitor vaccine safety detected a potential signal for Pfizer's new COVID-19 booster and stroke risk in adults age 65 and up. OIder adults in their 60s and up, as well as younger folks with medical conditions, remain the most vulnerable to severe disease or death and will especially benefit from a booster dose. Viruses like COVID-19 spread really well indoors. Why it mattersĪs the virus mutates, boosters have become necessary to restore protection given by the original vaccines or past infections. Some adults can get Novavax for a booster instead.

Updated COVID boosters from Pfizer and Moderna are available to everyone 6 months and older.

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