**ATAGI notes that the TGA is investigating 2474 reports of suspected myocarditis and/or pericarditis following Pfizer and in particular 786 suspected myocarditis reports. Of these suspected cases, 389 cases of myocarditis or myopericarditis have been assessed as meeting the CDC case definition (level 1, 2, or 3), of which 261 cases occurred following the second dose.** **ATAGI also notes that the TGA is investigating 51 reported cases of myocarditis following Moderna vaccine, of which 25 have been assessed as meeting the CDC case definition (level 1, 2, or 3). ATAGI are monitoring international data on the rates of myocarditis and pericarditis.** http://web.archive.org/web/20211212232935/https://www.health.gov.au/news/atagi-update-following-weekly-covid-19-meeting-8-december-2021 https://www.tga.gov.au/periodic/covid-19-vaccine-weekly-safety-report-09-12-2021