1 https://www.aifa.gov.it/documents/20142/1289823/2021.04.04.04.07_covid-19%20astrazeneca_it.pdf 2 https://www.ema.europa.eu/en/documents/referral/use-vaxzevria-prevent-covid-covid-covid-19-article-53-procedure- insublement-restemment-restemment-report_en.pdf 3 https://www.gov.uk/government/publications/coronavirus-covid-covid-19-vaccine-vaccine-dressvers-reactions/coronavirus-vaccine- summary- summary-umsary-of-yellow-yally-card-card-reporting 4 https://www.aifa.gov.it/documents/20142/1315190/rapporto_sorveglianza_vaccini_covid-19_4.pdf 5 https://www.cdc.gov/mmwr/volumes/70/wr/mm7018e2.htm?s_cid=mm7018e2_w