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2. World Health Organization (2023, October 01). WHO Director-General’s Opening Remarks at the Media Briefing—5 May 2023. Available online: https://www.who.int/news-room/speeches/item/who-director-general-s-opening-remarks-at-the-media-briefing.
3. Italian National Institute of Health (2023, October 01). COVID-19: Sorveglianza, Impatto Delle Infezioni Ed Efficacia Vaccinale. Available online: https://www.epicentro.iss.it/coronavirus/bollettino/Bollettino-sorveglianza-integrata-COVID-19_18-gennaio-2023.pdf.
4. Italian National Institute of Health (2023, October 01). Piano Nazionale di Vaccinazione COVID-19. Available online: https://www.epicentro.iss.it/vaccini/covid-19-piano-vaccinazione.
5. Italian Ministry of Health (2024, February 05). Campagna Di Vaccinazione Anti COVID-19, Available online: https://www.salute.gov.it/portale/nuovocoronavirus/dettaglioContenutiNuovoCoronavirus.jsp?lingua=italiano&id=6110&area=nuovoCoronavirus&menu=vuoto.