tetano
Editor, Senior Moderator
PLoS One
. 2022 Aug 10;17(8):e0264667.
doi: 10.1371/journal.pone.0264667. eCollection 2022.
SARS-CoV-2 antibody persistence after five and twelve months: A cohort study from South-Eastern Norway
Marjut Sarjomaa[SUP] 1 2 [/SUP], Lien My Diep[SUP] 3 [/SUP], Chi Zhang[SUP] 3 4 [/SUP], Yngvar Tveten[SUP] 5 [/SUP], Harald Reiso[SUP] 6 [/SUP], Carina Thilesen[SUP] 7 [/SUP], Svein Arne Nordbø[SUP] 8 9 [/SUP], Kristine Karlsrud Berg[SUP] 10 [/SUP], Ingeborg Aaberge[SUP] 4 [/SUP], Neil Pearce[SUP] 11 [/SUP], Hege Kersten[SUP] 12 13 [/SUP], Jan Paul Vandenbroucke[SUP] 11 14 15 [/SUP], Randi Eikeland[SUP] 16 17 [/SUP], Anne Kristin Møller Fell[SUP] 2 17 [/SUP]
Affiliations
Abstract
Objectives: To assess total antibody levels against Severe Acute Respiratory Syndrome CoronaVirus 2 (SARS CoV-2) spike protein up to 12 months after Coronavirus Disease (COVID-19) infection in non-vaccinated individuals and the possible predictors of antibody persistence.
Methods: This is the first part of a prospective multi-centre cohort study.
Participants: The study included SARS-CoV-2 real-time polymerase chain reaction (RT-PCR) positive and negative participants in South-Eastern Norway from February to December 2020. Possible predictors of SARS-CoV-2 total antibody persistence was assessed. The SARS-CoV-2 total antibody levels against spike protein were measured three to five months after PCR in 391 PCR-positive and 703 PCR-negative participants; 212 PCR-positive participants were included in follow-up measurements at 10 to 12 months. The participants completed a questionnaire including information about symptoms, comorbidities, allergies, body mass index (BMI), and hospitalisation.
Primary outcome: The SARS-CoV-2 total antibody levels against spike protein three to five and 10 to 12 months after PCR positive tests.
Results: SARS-CoV-2 total antibodies against spike protein were present in 366 (94%) non-vaccinated PCR-positive participants after three to five months, compared with nine (1%) PCR-negative participants. After 10 to 12 months, antibodies were present in 204 (96%) non-vaccinated PCR-positive participants. Of the PCR-positive participants, 369 (94%) were not hospitalised. The mean age of the PCR-positive participants was 48 years (SD 15, range 20-85) and 50% of them were male. BMI ≥ 25 kg/m2 was positively associated with decreased antibody levels (OR 2.34, 95% CI 1.06 to 5.42). Participants with higher age and self-reported initial fever with chills or sweating were less likely to have decreased antibody levels (age: OR 0.97, 95% CI 0.94 to 0.99; fever: OR 0.33, 95% CI 0.13 to 0.75).
Conclusion: Our results indicate that the level of SARS-CoV-2 total antibodies against spike protein persists for the vast majority of non-vaccinated PCR-positive persons at least 10 to 12 months after mild COVID-19.
. 2022 Aug 10;17(8):e0264667.
doi: 10.1371/journal.pone.0264667. eCollection 2022.
SARS-CoV-2 antibody persistence after five and twelve months: A cohort study from South-Eastern Norway
Marjut Sarjomaa[SUP] 1 2 [/SUP], Lien My Diep[SUP] 3 [/SUP], Chi Zhang[SUP] 3 4 [/SUP], Yngvar Tveten[SUP] 5 [/SUP], Harald Reiso[SUP] 6 [/SUP], Carina Thilesen[SUP] 7 [/SUP], Svein Arne Nordbø[SUP] 8 9 [/SUP], Kristine Karlsrud Berg[SUP] 10 [/SUP], Ingeborg Aaberge[SUP] 4 [/SUP], Neil Pearce[SUP] 11 [/SUP], Hege Kersten[SUP] 12 13 [/SUP], Jan Paul Vandenbroucke[SUP] 11 14 15 [/SUP], Randi Eikeland[SUP] 16 17 [/SUP], Anne Kristin Møller Fell[SUP] 2 17 [/SUP]
Affiliations
- PMID: 35947589
- DOI: 10.1371/journal.pone.0264667
Abstract
Objectives: To assess total antibody levels against Severe Acute Respiratory Syndrome CoronaVirus 2 (SARS CoV-2) spike protein up to 12 months after Coronavirus Disease (COVID-19) infection in non-vaccinated individuals and the possible predictors of antibody persistence.
Methods: This is the first part of a prospective multi-centre cohort study.
Participants: The study included SARS-CoV-2 real-time polymerase chain reaction (RT-PCR) positive and negative participants in South-Eastern Norway from February to December 2020. Possible predictors of SARS-CoV-2 total antibody persistence was assessed. The SARS-CoV-2 total antibody levels against spike protein were measured three to five months after PCR in 391 PCR-positive and 703 PCR-negative participants; 212 PCR-positive participants were included in follow-up measurements at 10 to 12 months. The participants completed a questionnaire including information about symptoms, comorbidities, allergies, body mass index (BMI), and hospitalisation.
Primary outcome: The SARS-CoV-2 total antibody levels against spike protein three to five and 10 to 12 months after PCR positive tests.
Results: SARS-CoV-2 total antibodies against spike protein were present in 366 (94%) non-vaccinated PCR-positive participants after three to five months, compared with nine (1%) PCR-negative participants. After 10 to 12 months, antibodies were present in 204 (96%) non-vaccinated PCR-positive participants. Of the PCR-positive participants, 369 (94%) were not hospitalised. The mean age of the PCR-positive participants was 48 years (SD 15, range 20-85) and 50% of them were male. BMI ≥ 25 kg/m2 was positively associated with decreased antibody levels (OR 2.34, 95% CI 1.06 to 5.42). Participants with higher age and self-reported initial fever with chills or sweating were less likely to have decreased antibody levels (age: OR 0.97, 95% CI 0.94 to 0.99; fever: OR 0.33, 95% CI 0.13 to 0.75).
Conclusion: Our results indicate that the level of SARS-CoV-2 total antibodies against spike protein persists for the vast majority of non-vaccinated PCR-positive persons at least 10 to 12 months after mild COVID-19.