Effectiveness of vaccination against SARS-CoV-2 infection and Covid-19 hospitalisation among Finnish elderly and chronically ill—An interim analysis of a nationwide cohort study

Ulrike Baum; Eero Poukka; Arto A. Palmu; Heini Salo; Toni O. Lehtonen; Tuija Leino

doi:10.1371/journal.pone.0258704

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Open Access

Peer-reviewed

Research Article

Effectiveness of vaccination against SARS-CoV-2 infection and Covid-19 hospitalisation among Finnish elderly and chronically ill—An interim analysis of a nationwide cohort study

Ulrike Baum ,

Contributed equally to this work with: Ulrike Baum, Eero Poukka

Roles Conceptualization, Formal analysis, Methodology, Writing – original draft, Writing – review & editing

* E-mail: eero.poukka@thl.fi (EP); ulrike.baum@thl.fi (UB)

Affiliation Infectious Disease Control and Vaccinations Unit, Department of Health Security, Finnish Institute for Health and Welfare (THL), Helsinki, Finland

https://orcid.org/0000-0002-7456-8016

⨯
Eero Poukka ,

Contributed equally to this work with: Ulrike Baum, Eero Poukka

Roles Formal analysis, Writing – original draft, Writing – review & editing

* E-mail: eero.poukka@thl.fi (EP); ulrike.baum@thl.fi (UB)

Affiliation Infectious Disease Control and Vaccinations Unit, Department of Health Security, Finnish Institute for Health and Welfare (THL), Helsinki, Finland

https://orcid.org/0000-0001-5776-5897

⨯
Arto A. Palmu,

Roles Conceptualization, Formal analysis, Writing – review & editing

Affiliation Population Health Unit, Department of Public Health and Welfare, Finnish Institute for Health and Welfare (THL), Tampere, Finland
⨯
Heini Salo,

Roles Formal analysis, Writing – review & editing

Affiliation Infectious Disease Control and Vaccinations Unit, Department of Health Security, Finnish Institute for Health and Welfare (THL), Helsinki, Finland
⨯
Toni O. Lehtonen,

Roles Data curation, Writing – review & editing

Affiliation Infectious Disease Control and Vaccinations Unit, Department of Health Security, Finnish Institute for Health and Welfare (THL), Helsinki, Finland

https://orcid.org/0000-0003-2089-2299

⨯
Tuija Leino

Roles Conceptualization, Data curation, Formal analysis, Investigation, Supervision, Writing – review & editing

Affiliation Infectious Disease Control and Vaccinations Unit, Department of Health Security, Finnish Institute for Health and Welfare (THL), Helsinki, Finland
⨯

Effectiveness of vaccination against SARS-CoV-2 infection and Covid-19 hospitalisation among Finnish elderly and chronically ill—An interim analysis of a nationwide cohort study

Ulrike Baum,
Eero Poukka,
Arto A. Palmu,
Heini Salo,
Toni O. Lehtonen,
Tuija Leino

Published: November 18, 2021
https://doi.org/10.1371/journal.pone.0258704

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Vaccination and immunization
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COVID 19
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Vaccines
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Geriatric care
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SARS CoV 2
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Respiratory infections
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Finland
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Medical conditions
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