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Version 2 2021-01-14, 13:44
Version 1 2021-01-13, 15:38
posted on 2022-05-02, 08:25 authored by Charlotte ThålinCharlotte Thålin, Sebastian Havervall, Ulrika Marking, Nina Greilert-Norin, Kim Blom, Max Gordon, Jonas Klingström, Peter Nilsson, Sophia Hober, Mia Phillipson, Sara MangsboSara Mangsbo, Mikael Åberg

The COMMUNITY pandemic surveillance cohort is a longitudinal cohort study including 2149 healthcare workers and 118 COVID-19 patients.

Dataset includes:

1. Serological data at baseline April-May 2020 and at follow-up every four month (ongoing).

2. Data on memory T cell responses 

3. Register data from Swedish vaccination register (VAL Vaccinera) and national communicable diseases register SmiNet (Public Health Agency of Sweden).

 3. Self-reported symptoms compatible with COVID-19 since 1 January 2020, occupation, work location and exposure to patients infected with SARS-CoV-2 prior to blood sampling (healthcare workers).

3. Clinical data including co-morbidities, disease severity, on-going medications, demography (COVID-19 patients).


The COMMUNITY pandemic surveillance cohort was initiated in April 2020 and comprises 2149 healthcare workers and 118 COVID-19 patients. Blood samples are collected every four months. Serological and cellular immune responses are continuously mapped to demography, vaccination(s) and prior infection. qPCR screening programs, including viral sequencing and culturing, are conducted during time points with high viral transmission and in response to the threat of emerging variants of concern (VOC). 

The COMMUNITY pandemic surveillance cohort is conducted through close collaborations within the SciLifeLab community, the Public Health Agency of Sweden and the Swedish Armed Forces. 


Impact of SARS-CoV-2 infection on vaccine-induced immune responses over time. Havervall S, Marking U, Greilert-Norin N et al. Clinical & Translational Immunology 2022;11(4):e1388.

Duration of SARS-CoV-2 Immune Responses Up to Six Months Following Homologous or Heterologous Primary Immunization with ChAdOx1 nCoV-19 and BNT162b2 mRNA Vaccines. Marking U, Havervall S, Greilert-Norin N, et al.  Vaccines 2022;10(3).

A cell-free high throughput assay for assessment of SARS-CoV-2 neutralizing antibodies. Mravinacova S, Jönsson M, Christ W, Klingström J . et al. 

New biotechnology 2022;66():46-52.

Long-term SARS-CoV-2-specific and cross-reactive cellular immune responses correlate with humoral responses, disease severity, and symptomatology. Laurén I, Havervall S, Ng H, Lord M, Pettke A, Greilert-Norin et al. Immunity, inflammation and disease 2022;10(4):e595.

Persistent endotheliopathy in the pathogenesis of long COVID syndrome: Comment from von Meijenfeldt et al. Von Meijenfeldt Fa, Havervall S, Adelmeijer J, Thalin C, Lisman T JOURNAL OF THROMBOSIS AND HAEMOSTASIS 2022;20(1):267-269.

Robust humoral and cellular immune responses and low risk for reinfection at least 8 months following asymptomatic to mild COVID-19. Havervall S, Ng H, Falk Aj, Greilert-Norin et al. JOURNAL OF INTERNAL MEDICINE 2022;291(1):72-80.

SARS-CoV-2 induces a durable and antigen specific humoral immunity after asymptomatic to mild COVID-19 infection. Havervall S, Jernbom Falk A, Klingström J et al.. PloS one 2022;17(1):e0262169.

A Model Predicting Mortality of Hospitalized Covid-19 Patients Four Days After Admission: Development, Internal and Temporal-External Validation. Heber S, Pereyra D, Schrottmaier Wc et al.Assinger A Frontiers in cellular and infection microbiology 2021;11():795026.

An evaluation of a FluoroSpot assay as a diagnostic tool to determine SARS-CoV-2 specific T cell responses. Mangsbo Sm, Havervall S, Laurén I et al. PloS one. 2021;16(9):e0258041. https/

Antibody responses after a single dose of ChAdOx1 nCoV-19 vaccine in healthcare workers previously infected with SARS-CoV-2. Havervall S, Marking U, Greilert-Norin N, Ng H, Gordon M, Salomonsson Ac, Hellström C, Pin E, Blom K, Mangsbo S, Phillipson M, Klingström J, Hober S, Nilsson P, Åberg M, Thålin C. EBioMedicine 2021;70():103523. htttps//

Circulating Markers of Neutrophil Extracellular Traps Are of Prognostic Value in Patients With COVID-19. Ng H, Havervall S, Rosell A, Aguilera K, Parv K, Von Meijenfeldt Fa, Lisman T, Mackman N, Thålin C, Phillipson M. Arteriosclerosis, Thrombosis, and Vascular Biology 2021;41(2):988-994. https/

COVID-19 is Associated with an Acquired Factor XIII Deficiency. Von Meijenfeldt Fa, Havervall S, Adelmeijer J, Lundström A, Magnusson M, Mackman N, Thalin C, Lisman T. Thrombosis and Haemostasis 2021;121(12):1668-1669. 10.1055/a-1450-8414

Elevated factor V activity and antigen levels in patients with Covid-19 are related to disease severity and 30-day mortality. Von Meijenfeldt Fa, Havervall S, Adelmeijer J, Lundström A, et al. American Journal of Hematology 2021;96(4):E98-E100.

Patients With COVID-19 Have Elevated Levels of Circulating Extracellular Vesicle Tissue Factor Activity That Is Associated With Severity and Mortality-Brief Report

Rosell A, Havervall S, Von Meijenfeldt F, et al.

Arteriosclerosis, thrombosis, and vascular biology 2021;41(2):878-882 .

Prothrombotic changes in patients with COVID-19 are associated with disease severity and mortality

Von Meijenfeldt Fa, Havervall S, Adelmeijer J et al. Research and practice in thrombosis and haemostasis 2021;5(1):132-141

Soluble angiotensin-converting enzyme 2 is transiently elevated in COVID-19 and correlates with specific inflammatory and endothelial markers

Lundström A, Ziegler L, Havervall S. et al.

Journal of Medical Virology 2021;93(10):5908-5916

Sustained prothrombotic changes in COVID-19 patients 4 months after hospital discharge. Von Meijenfeldt Fa, Havervall S, Adelmeijer J, et al.  Blood Advances 2021;5(3):756-759. 

Symptoms and Functional Impairment Assessed 8 Months After Mild COVID-19 Among Health Care Workers

Havervall et al. JAMA 2021;325(19):2015-2016.

Systematic evaluation of SARS-CoV-2 antigens enables a highly specific and sensitive multiplex serological COVID-19 assay. Hober S, Hellstrom C, Olofsson J et al. CLINICAL & TRANSLATIONAL IMMUNOLOGY 2021;10(7):e1312.

SARS-CoV-2 exposure, symptoms and seroprevalence in healthcare workers in Sweden. Rudberg As, Havervall S, Månberg A, Jernbom Falk A, et al. C. Nature Communications 2020;11(1):5064 https:/


SciLifeLab/KAW COVID-19 National Research Program

Jonas and Christina af Jochnick Foundation

Region Stockholm

Leif Lundblad Family Foundation

Hjärt Lungfonden



Danderyds sjukhus/Karolinska Institutet

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