Symptomatic SARS-CoV-2 infections after full schedule BNT162b2 vaccination in seropositive healthcare workers: a case series from a single institution

We report 11 cases of SARS-CoV-2 infection in healthcare workers (HCW) naïve for COVID-19 and seropositive after the second dose of the BNT162b2 mRNA vaccine. Based on voluntary-based surveillance, they tested positive for different strains of SARS-CoV-2, as Spike gene sequencing showed. Five of the...

Full description

Saved in:
Bibliographic Details
Main Authors: Andreina Baj, Federica Novazzi, Angelo Genoni, Francesca Drago Ferrante, Stefano Taborelli, Beatrice Pini, Michele Partenope, Marilena Valli, Daniela Dalla Gasperina, Riccardo Capuano, Martina Prestia, Pietro Giorgio Spezia, Lorenzo Azzi, Daniele Focosi, Fabrizio Maggi
Format: Article
Language:English
Published: Taylor & Francis Group 2021-01-01
Series:Emerging Microbes and Infections
Subjects:
Online Access:https://www.tandfonline.com/doi/10.1080/22221751.2021.1942230
Tags: Add Tag
No Tags, Be the first to tag this record!
_version_ 1849312917070020608
author Andreina Baj
Federica Novazzi
Angelo Genoni
Francesca Drago Ferrante
Stefano Taborelli
Beatrice Pini
Michele Partenope
Marilena Valli
Daniela Dalla Gasperina
Riccardo Capuano
Martina Prestia
Pietro Giorgio Spezia
Lorenzo Azzi
Daniele Focosi
Fabrizio Maggi
author_facet Andreina Baj
Federica Novazzi
Angelo Genoni
Francesca Drago Ferrante
Stefano Taborelli
Beatrice Pini
Michele Partenope
Marilena Valli
Daniela Dalla Gasperina
Riccardo Capuano
Martina Prestia
Pietro Giorgio Spezia
Lorenzo Azzi
Daniele Focosi
Fabrizio Maggi
author_sort Andreina Baj
collection DOAJ
description We report 11 cases of SARS-CoV-2 infection in healthcare workers (HCW) naïve for COVID-19 and seropositive after the second dose of the BNT162b2 mRNA vaccine. Based on voluntary-based surveillance, they tested positive for different strains of SARS-CoV-2, as Spike gene sequencing showed. Five of them reported mild symptoms. Given the risk for SARS-CoV-2 introduction from asymptomatic vaccinees, this case series suggests the need to continue nasopharyngeal screening programmes.
format Article
id doaj-art-b917d95d8b214a58abe1bbfc008a7606
institution Kabale University
issn 2222-1751
language English
publishDate 2021-01-01
publisher Taylor & Francis Group
record_format Article
series Emerging Microbes and Infections
spelling doaj-art-b917d95d8b214a58abe1bbfc008a76062025-08-20T03:52:56ZengTaylor & Francis GroupEmerging Microbes and Infections2222-17512021-01-011011254125610.1080/22221751.2021.1942230Symptomatic SARS-CoV-2 infections after full schedule BNT162b2 vaccination in seropositive healthcare workers: a case series from a single institutionAndreina Baj0Federica Novazzi1Angelo Genoni2Francesca Drago Ferrante3Stefano Taborelli4Beatrice Pini5Michele Partenope6Marilena Valli7Daniela Dalla Gasperina8Riccardo Capuano9Martina Prestia10Pietro Giorgio Spezia11Lorenzo Azzi12Daniele Focosi13Fabrizio Maggi14Department of Medicine and Surgery, University of Insubria, Varese, ItalyLaboratory of Microbiology, ASST dei Sette Laghi, Varese, ItalyDepartment of Biotechnology and Life Sciences, University of Insubria, Varese, ItalyLaboratory of Microbiology, ASST dei Sette Laghi, Varese, ItalyUnit of Occupational Medicine, ASST dei Sette Laghi, Varese, ItalyClinical Pathology Unit, St. Anna Hospital, Como, ItalyClinical Pathology Unit, St. Anna Hospital, Como, ItalyClinical Pathology Unit, St. Anna Hospital, Como, ItalyDepartment of Medicine and Surgery, University of Insubria, Varese, ItalyLaboratory of Microbiology, ASST dei Sette Laghi, Varese, ItalyLaboratory of Microbiology, ASST dei Sette Laghi, Varese, ItalyDepartment of Translational Research, University of Pisa, Pisa, ItalyUnit of Oral Medicine and Pathology, ASST dei Sette Laghi, Varese, ItalyNorth-Western Tuscany Blood Bank, Pisa University Hospital, Pisa, ItalyDepartment of Medicine and Surgery, University of Insubria, Varese, ItalyWe report 11 cases of SARS-CoV-2 infection in healthcare workers (HCW) naïve for COVID-19 and seropositive after the second dose of the BNT162b2 mRNA vaccine. Based on voluntary-based surveillance, they tested positive for different strains of SARS-CoV-2, as Spike gene sequencing showed. Five of them reported mild symptoms. Given the risk for SARS-CoV-2 introduction from asymptomatic vaccinees, this case series suggests the need to continue nasopharyngeal screening programmes.https://www.tandfonline.com/doi/10.1080/22221751.2021.1942230COVID19SARS-CoV-2vaccineBNT162b2variants of interest
spellingShingle Andreina Baj
Federica Novazzi
Angelo Genoni
Francesca Drago Ferrante
Stefano Taborelli
Beatrice Pini
Michele Partenope
Marilena Valli
Daniela Dalla Gasperina
Riccardo Capuano
Martina Prestia
Pietro Giorgio Spezia
Lorenzo Azzi
Daniele Focosi
Fabrizio Maggi
Symptomatic SARS-CoV-2 infections after full schedule BNT162b2 vaccination in seropositive healthcare workers: a case series from a single institution
Emerging Microbes and Infections
COVID19
SARS-CoV-2
vaccine
BNT162b2
variants of interest
title Symptomatic SARS-CoV-2 infections after full schedule BNT162b2 vaccination in seropositive healthcare workers: a case series from a single institution
title_full Symptomatic SARS-CoV-2 infections after full schedule BNT162b2 vaccination in seropositive healthcare workers: a case series from a single institution
title_fullStr Symptomatic SARS-CoV-2 infections after full schedule BNT162b2 vaccination in seropositive healthcare workers: a case series from a single institution
title_full_unstemmed Symptomatic SARS-CoV-2 infections after full schedule BNT162b2 vaccination in seropositive healthcare workers: a case series from a single institution
title_short Symptomatic SARS-CoV-2 infections after full schedule BNT162b2 vaccination in seropositive healthcare workers: a case series from a single institution
title_sort symptomatic sars cov 2 infections after full schedule bnt162b2 vaccination in seropositive healthcare workers a case series from a single institution
topic COVID19
SARS-CoV-2
vaccine
BNT162b2
variants of interest
url https://www.tandfonline.com/doi/10.1080/22221751.2021.1942230
work_keys_str_mv AT andreinabaj symptomaticsarscov2infectionsafterfullschedulebnt162b2vaccinationinseropositivehealthcareworkersacaseseriesfromasingleinstitution
AT federicanovazzi symptomaticsarscov2infectionsafterfullschedulebnt162b2vaccinationinseropositivehealthcareworkersacaseseriesfromasingleinstitution
AT angelogenoni symptomaticsarscov2infectionsafterfullschedulebnt162b2vaccinationinseropositivehealthcareworkersacaseseriesfromasingleinstitution
AT francescadragoferrante symptomaticsarscov2infectionsafterfullschedulebnt162b2vaccinationinseropositivehealthcareworkersacaseseriesfromasingleinstitution
AT stefanotaborelli symptomaticsarscov2infectionsafterfullschedulebnt162b2vaccinationinseropositivehealthcareworkersacaseseriesfromasingleinstitution
AT beatricepini symptomaticsarscov2infectionsafterfullschedulebnt162b2vaccinationinseropositivehealthcareworkersacaseseriesfromasingleinstitution
AT michelepartenope symptomaticsarscov2infectionsafterfullschedulebnt162b2vaccinationinseropositivehealthcareworkersacaseseriesfromasingleinstitution
AT marilenavalli symptomaticsarscov2infectionsafterfullschedulebnt162b2vaccinationinseropositivehealthcareworkersacaseseriesfromasingleinstitution
AT danieladallagasperina symptomaticsarscov2infectionsafterfullschedulebnt162b2vaccinationinseropositivehealthcareworkersacaseseriesfromasingleinstitution
AT riccardocapuano symptomaticsarscov2infectionsafterfullschedulebnt162b2vaccinationinseropositivehealthcareworkersacaseseriesfromasingleinstitution
AT martinaprestia symptomaticsarscov2infectionsafterfullschedulebnt162b2vaccinationinseropositivehealthcareworkersacaseseriesfromasingleinstitution
AT pietrogiorgiospezia symptomaticsarscov2infectionsafterfullschedulebnt162b2vaccinationinseropositivehealthcareworkersacaseseriesfromasingleinstitution
AT lorenzoazzi symptomaticsarscov2infectionsafterfullschedulebnt162b2vaccinationinseropositivehealthcareworkersacaseseriesfromasingleinstitution
AT danielefocosi symptomaticsarscov2infectionsafterfullschedulebnt162b2vaccinationinseropositivehealthcareworkersacaseseriesfromasingleinstitution
AT fabriziomaggi symptomaticsarscov2infectionsafterfullschedulebnt162b2vaccinationinseropositivehealthcareworkersacaseseriesfromasingleinstitution