Immunogenicity and safety of two doses of the CoronaVac SARS-CoV-2 vaccine in SARS-CoV-2 seropositive and seronegative patients with autoimmune rheumatic …

NE Aikawa, LVK Kupa, SG Pasoto… - The Lancet …, 2022 - thelancet.com
… for seronegative patients and controls, the second dose was required for maximum response
at day 69, which was lower in seronegative patients than in seronegative controls. GMTs in …

[HTML][HTML] Immune transcriptomes of highly exposed SARS-CoV-2 asymptomatic seropositive versus seronegative individuals from the Ischgl community

HK Lee, L Knabl, L Pipperger, A Volland, PA Furth… - Scientific reports, 2021 - nature.com
… in asymptomatic SARS-CoV-2 seropositive and highly exposed seronegative individuals …
controls defined as samples from seronegative individuals without any contact to SARS-CoV

[HTML][HTML] SARS-CoV-2 seroprevalence among blood donors in Québec, and analysis of symptoms associated with seropositivity: a nested case-control study

A Lewin, R Therrien, G De Serres, Y Grégoire… - Canadian Journal of …, 2021 - Springer
… The study design was a cross-sectional serological survey with a nested case-control study.
… Seropositive donors and a control group of seronegative donors were questioned about …

Mucosal and systemic immune correlates of viral control after SARS-CoV-2 infection challenge in seronegative adults

HR Wagstaffe, RS Thwaites, A Reynaldi, JK Sidhu… - Science …, 2024 - science.org
… , seronegative volunteers with a pre-Alpha severe acute respiratory syndrome coronavirus 2
(SARS-CoV-… modeling of immune responses to primary SARS-CoV-2 infection that revealed …

SARS-CoV-2 serologic assays in control and unknown populations demonstrate the necessity of virus neutralization testing

JA Rathe, EA Hemann, J Eggenberger… - The Journal of …, 2021 - academic.oup.com
… links with virus neutralization of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2),
we evaluated individuals for SARS-CoV-2 antibody level and viral neutralization. …

Risk of reinfection after seroconversion to SARS-CoV-2: A population-based propensity-score matched cohort study

A Leidi, F Koegler, R Dumont, R Dubos, ME Zaballa… - MedRxiv, 2021 - medrxiv.org
… in the hazard of being infected among participants with antibodies against SARS-CoV-2,
when compared to seronegative controls, >8 months after initial serology assessment. …

[HTML][HTML] Humoral immune responses during SARS-CoV-2 mRNA vaccine administration in seropositive and seronegative individuals

E Fraley, C LeMaster, E Geanes, D Banerjee, S Khanal… - BMC medicine, 2021 - Springer
… Using the positive control beads, we determined the inter-assay (… Positive control beads
were utilized to ensure positive … binding by using the negative control samples MFI (beads …

[HTML][HTML] Incidence of SARS-CoV-2 infection in health care workers from Northern Italy based on antibody status: immune protection from secondary infection-A …

F Rovida, I Cassaniti, E Percivalle, A Sarasini… - International Journal of …, 2021 - Elsevier
… The frequency of SARS-CoV-2 infection (as determined by virus RNA detection) was
evaluated in a group of 1,460 seropositive and a control group of 8,150 seronegative healthcare …

[HTML][HTML] Evidence of previous SARS-CoV-2 infection in seronegative patients with long COVID

BA Krishna, EY Lim, L Mactavous, PA Lyons… - …, 2022 - thelancet.com
… assays for retrospective diagnosis of SARS-CoV-2, we decided to use a robust SARS-CoV-2
T cell … For positive controls, we used PBMC samples from a cohort of patients with RT-qPCR …

[HTML][HTML] Pre-existing polymerase-specific T cells expand in abortive seronegative SARS-CoV-2

L Swadling, MO Diniz, NM Schmidt, OE Amin… - Nature, 2022 - nature.com
… ), would expand in vivo to support rapid viral control, aborting infection. We measured … We
provide T cell and innate transcript evidence for abortive, seronegative SARS-CoV-2 infection. …