Safety Profile of Recommended Vaccinations in Adolescents: Data from Surveillance of Adverse Events Following Immunization in Puglia (Italy), 2016–2020

Adolescence is a critical period for immunization, in which the adhesion rate to recommended vaccinations is often lower than desired. Since the safety of new vaccines is one of the most important factors determining vaccination hesitancy, post-marketing surveillance of adverse events following immu...

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Autores principales: Antonio Di Lorenzo, Francesco Paolo Bianchi, Andrea Martinelli, Sabrina Lattanzio, Antonella Carbonara, Giusy Diella, Silvio Tafuri, Pasquale Stefanizzi
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Publicado: MDPI AG 2021
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spelling oai:doaj.org-article:aea75fa6979a43ef9d943af58acd97b82021-11-25T19:11:06ZSafety Profile of Recommended Vaccinations in Adolescents: Data from Surveillance of Adverse Events Following Immunization in Puglia (Italy), 2016–202010.3390/vaccines91113022076-393Xhttps://doaj.org/article/aea75fa6979a43ef9d943af58acd97b82021-11-01T00:00:00Zhttps://www.mdpi.com/2076-393X/9/11/1302https://doaj.org/toc/2076-393XAdolescence is a critical period for immunization, in which the adhesion rate to recommended vaccinations is often lower than desired. Since the safety of new vaccines is one of the most important factors determining vaccination hesitancy, post-marketing surveillance of adverse events following immunization (AEFIs) is recommended by the World Health Organization (WHO) to better understand the safety of these drugs. This report describes AEFIs notified in Puglia (Italy) after recommended vaccinations in adolescents aged 12 to 18 years in 2016–2020 to determine the safety profile of these products in a real-life scenario. This is a retrospective observational study. Data were gathered from the list of AEFIs notified in subjects between 12 and 18 years of age following administration of recommended vaccines in Puglia in 2016–2020. AEFIs were classified according to the WHO’s decisional algorithm, and causality assessment was carried out for serious AEFIs. From 2016 to 2020, 323,627 doses of vaccine were administered to adolescents in Puglia and 50 AEFIs were reported (reporting rate: 15.4 × 100,000 doses). Of these, 17 (34.0%) were classified as serious, and causality assessment identified 13 of them (76.5%) as vaccine related. The most common symptoms were local reactions, fever and neurological symptoms. No deaths were notified. The benefits of immunization in adolescents appear to be greater than the risk of AEFIs for all studied vaccines; in fact, AEFIs occur in less than 0.1‰ of patients and are generally mild and self-limiting.Antonio Di LorenzoFrancesco Paolo BianchiAndrea MartinelliSabrina LattanzioAntonella CarbonaraGiusy DiellaSilvio TafuriPasquale StefanizziMDPI AGarticleAEFIscausality assessmentvaccinationadolescentsMedicineRENVaccines, Vol 9, Iss 1302, p 1302 (2021)
institution DOAJ
collection DOAJ
language EN
topic AEFIs
causality assessment
vaccination
adolescents
Medicine
R
spellingShingle AEFIs
causality assessment
vaccination
adolescents
Medicine
R
Antonio Di Lorenzo
Francesco Paolo Bianchi
Andrea Martinelli
Sabrina Lattanzio
Antonella Carbonara
Giusy Diella
Silvio Tafuri
Pasquale Stefanizzi
Safety Profile of Recommended Vaccinations in Adolescents: Data from Surveillance of Adverse Events Following Immunization in Puglia (Italy), 2016–2020
description Adolescence is a critical period for immunization, in which the adhesion rate to recommended vaccinations is often lower than desired. Since the safety of new vaccines is one of the most important factors determining vaccination hesitancy, post-marketing surveillance of adverse events following immunization (AEFIs) is recommended by the World Health Organization (WHO) to better understand the safety of these drugs. This report describes AEFIs notified in Puglia (Italy) after recommended vaccinations in adolescents aged 12 to 18 years in 2016–2020 to determine the safety profile of these products in a real-life scenario. This is a retrospective observational study. Data were gathered from the list of AEFIs notified in subjects between 12 and 18 years of age following administration of recommended vaccines in Puglia in 2016–2020. AEFIs were classified according to the WHO’s decisional algorithm, and causality assessment was carried out for serious AEFIs. From 2016 to 2020, 323,627 doses of vaccine were administered to adolescents in Puglia and 50 AEFIs were reported (reporting rate: 15.4 × 100,000 doses). Of these, 17 (34.0%) were classified as serious, and causality assessment identified 13 of them (76.5%) as vaccine related. The most common symptoms were local reactions, fever and neurological symptoms. No deaths were notified. The benefits of immunization in adolescents appear to be greater than the risk of AEFIs for all studied vaccines; in fact, AEFIs occur in less than 0.1‰ of patients and are generally mild and self-limiting.
format article
author Antonio Di Lorenzo
Francesco Paolo Bianchi
Andrea Martinelli
Sabrina Lattanzio
Antonella Carbonara
Giusy Diella
Silvio Tafuri
Pasquale Stefanizzi
author_facet Antonio Di Lorenzo
Francesco Paolo Bianchi
Andrea Martinelli
Sabrina Lattanzio
Antonella Carbonara
Giusy Diella
Silvio Tafuri
Pasquale Stefanizzi
author_sort Antonio Di Lorenzo
title Safety Profile of Recommended Vaccinations in Adolescents: Data from Surveillance of Adverse Events Following Immunization in Puglia (Italy), 2016–2020
title_short Safety Profile of Recommended Vaccinations in Adolescents: Data from Surveillance of Adverse Events Following Immunization in Puglia (Italy), 2016–2020
title_full Safety Profile of Recommended Vaccinations in Adolescents: Data from Surveillance of Adverse Events Following Immunization in Puglia (Italy), 2016–2020
title_fullStr Safety Profile of Recommended Vaccinations in Adolescents: Data from Surveillance of Adverse Events Following Immunization in Puglia (Italy), 2016–2020
title_full_unstemmed Safety Profile of Recommended Vaccinations in Adolescents: Data from Surveillance of Adverse Events Following Immunization in Puglia (Italy), 2016–2020
title_sort safety profile of recommended vaccinations in adolescents: data from surveillance of adverse events following immunization in puglia (italy), 2016–2020
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/aea75fa6979a43ef9d943af58acd97b8
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