Using data from the US Centers for Disease Control (CDC) Vaccine Adverse Event Reporting System, RSI investigators collaborated on a study showing increased risks of myopericarditis – an inflammatory condition of the heart muscle – following mRNA COVID19 vaccination, with the highest risks seen in young males following a second vaccine dose. Similar findings have been reported by other investigators working with CDC health scientists. RSI investigators noted that the risk of myopericarditis is appreciably higher in individuals with COVID 19 than the risk associated with vaccination.
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In Memoriam: Dr. Donald Mattison (1944-2026)
In Memoriam: Dr. Donald Mattison (1944-2026)
Dr. Donald Mattison passed away at his home in Columbia, South Carolina on Sunday, March 22, with his family present.
Don joined Risk Sciences International (RSI) in 2012 as Vice President and Chief Medical Officer, following a distinguished career spanning government, academia, and clinical practice in the United States. During his time at RSI, he contributed to 47 scientific publications and served as a trusted mentor and colleague to many across the organization.
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