Clinical immunity in discharged medical patients with COVID-19

Background: Most studies on SARS-CoV-2 infection show that people who have recovered from COVID-19 have antibodies to the virus. No study has evaluated whether the presence of antibodies to SARS-CoV-2 confers immunity to the infection relapse but however, to date, no human reinfections with SARS-CoV...

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Main Authors: Nicola Mumoli, Josè Vitale, Antonino Mazzone
Format: Article
Language:English
Published: Elsevier 2020-10-01
Series:International Journal of Infectious Diseases
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S1201971220306238
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author Nicola Mumoli
Josè Vitale
Antonino Mazzone
author_facet Nicola Mumoli
Josè Vitale
Antonino Mazzone
author_sort Nicola Mumoli
collection DOAJ
description Background: Most studies on SARS-CoV-2 infection show that people who have recovered from COVID-19 have antibodies to the virus. No study has evaluated whether the presence of antibodies to SARS-CoV-2 confers immunity to the infection relapse but however, to date, no human reinfections with SARS-CoV-2 have been confirmed. Material and methods: In our prospective, multicenter, cohort study we investigated within three months all patients, with confirmed COVID-19, discharged from two Hospitals (Legnano and Magenta Hospitals), in an area of Italy severely affected by the infection. Telephone follow-up at 1 and 2 months and clinical contact within 3 months was initiated; demographic, clinical, radiologic and laboratory data were recorded in electronic medical records and updated. Results: Of 1081 patients involved, 804 (74.3%) were discharged alive. For all these patients we obtained follow-up data. At 1 and 2 months none has died and none has had any signs of recurrence of infectious at both telephone interview and clinical visit. Conclusion: Our clinical observation have confirmed two basic points: the reinfection is very unlikely and any antibody immunity protects against recurrence, at least in the short term.
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spelling doaj.art-fb616efe3eb1416f9c37068b14f8e60b2022-12-22T00:35:17ZengElsevierInternational Journal of Infectious Diseases1201-97122020-10-0199229230Clinical immunity in discharged medical patients with COVID-19Nicola Mumoli0Josè Vitale1Antonino Mazzone2Corresponding author at: Department of Internal Medicine, Ospedale Fornaroli, via Donatori Sangue, 50, 20013 Magenta, MI, Italy.; Department of Internal Medicine, Ospedale di Legnano e Magenta, ASST Ovest Milanese, MI, ItalyDepartment of Internal Medicine, Ospedale di Legnano e Magenta, ASST Ovest Milanese, MI, ItalyDepartment of Internal Medicine, Ospedale di Legnano e Magenta, ASST Ovest Milanese, MI, ItalyBackground: Most studies on SARS-CoV-2 infection show that people who have recovered from COVID-19 have antibodies to the virus. No study has evaluated whether the presence of antibodies to SARS-CoV-2 confers immunity to the infection relapse but however, to date, no human reinfections with SARS-CoV-2 have been confirmed. Material and methods: In our prospective, multicenter, cohort study we investigated within three months all patients, with confirmed COVID-19, discharged from two Hospitals (Legnano and Magenta Hospitals), in an area of Italy severely affected by the infection. Telephone follow-up at 1 and 2 months and clinical contact within 3 months was initiated; demographic, clinical, radiologic and laboratory data were recorded in electronic medical records and updated. Results: Of 1081 patients involved, 804 (74.3%) were discharged alive. For all these patients we obtained follow-up data. At 1 and 2 months none has died and none has had any signs of recurrence of infectious at both telephone interview and clinical visit. Conclusion: Our clinical observation have confirmed two basic points: the reinfection is very unlikely and any antibody immunity protects against recurrence, at least in the short term.http://www.sciencedirect.com/science/article/pii/S1201971220306238COVID-19ImmunitySARS-CoV-2
spellingShingle Nicola Mumoli
Josè Vitale
Antonino Mazzone
Clinical immunity in discharged medical patients with COVID-19
International Journal of Infectious Diseases
COVID-19
Immunity
SARS-CoV-2
title Clinical immunity in discharged medical patients with COVID-19
title_full Clinical immunity in discharged medical patients with COVID-19
title_fullStr Clinical immunity in discharged medical patients with COVID-19
title_full_unstemmed Clinical immunity in discharged medical patients with COVID-19
title_short Clinical immunity in discharged medical patients with COVID-19
title_sort clinical immunity in discharged medical patients with covid 19
topic COVID-19
Immunity
SARS-CoV-2
url http://www.sciencedirect.com/science/article/pii/S1201971220306238
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