J 2024

Post-vaccination, post-infection and hybrid immunity against severe cases of COVID-19 and long COVID after infection with SARS-CoV-2 Omicron subvariants, Czechia, December 2021 to August 2023

ŠMÍD, Martin, Tamara BARUSOVÁ, Jiří JARKOVSKÝ, Ondřej MÁJEK, Tomáš PAVLÍK et. al.

Basic information

Original name

Post-vaccination, post-infection and hybrid immunity against severe cases of COVID-19 and long COVID after infection with SARS-CoV-2 Omicron subvariants, Czechia, December 2021 to August 2023

Authors

ŠMÍD, Martin, Tamara BARUSOVÁ, Jiří JARKOVSKÝ (203 Czech Republic, belonging to the institution), Ondřej MÁJEK (203 Czech Republic, belonging to the institution), Tomáš PAVLÍK (203 Czech Republic, belonging to the institution), Lenka PŘIBYLOVÁ (203 Czech Republic, belonging to the institution), Josefína WEINEROVÁ, Milan ZAJÍČEK and Jan TRNKA (guarantor)

Edition

Eurosurveillance, European Centre for Disease Prevention and Control, 2024, 1025-496X

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

30303 Infectious Diseases

Country of publisher

Sweden

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 19.000 in 2022

Organization unit

Faculty of Medicine

UT WoS

001308042700002

Keywords in English

COVID-19; SARS-CoV-2 Omicron subvariants; post-vaccination; post-infection; hybrid immunity

Tags

International impact, Reviewed
Změněno: 1/10/2024 10:04, Mgr. Tereza Miškechová

Abstract

V originále

Background COVID-19 remains a major infectious disease with substantial implications for individual and public health including the risk of a post-infection syndrome, long COVID. The continuous changes in dominant variants of SARS-CoV-2 necessitate a careful study of the effect of preventative strategies. Aim We aimed to estimate the effectiveness of post-vaccination, post-infection and hybrid immunity against severe cases requiring oxygen support caused by infections with SARS-CoV-2 variants BA1/2 and BA4/5+, and against long COVID in the infected population and their changes over time. Methods We used a Cox regression analysis with time-varying covariates and calendar time and logistic regression applied to national-level data from Czechia from December 2021 until August 2023. Results Recently boosted vaccination, post-infection and hybrid immunity provide significant protection against a severe course of COVID-19, while unboosted vaccination more than 10 months ago has a negligible protective effect. The post-vaccination immunity against the BA1/2 or BA4/5+ variants, especially based on the original vaccine types, appears to wane rapidly compared with post-infection and hybrid immunity. Once infected, however, previous immunity plays only a small protective role against long COVID. Conclusion Vaccination remains an effective preventative measure against a severe course of COVID-19 but its effectiveness wanes over time thus highlighting the importance of booster doses. Once infected, vaccines may have a small protective effect against the development of long COVID.

Links

MUNI/A/1132/2022, interní kód MU
Name: Matematické a statistické modelování 7
Investor: Masaryk University
101063853, interní kód MU
Name: Models with cross-interactions between partial dynamical processes aiming to understand significant or abrupt dynamic changes. (Acronym: CrossInteractions)
Investor: European Union, Marie Skłodowska-Curie Postdoctoral Fellowships (MSCA PF)