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  1. 2801
    “…Neutralizing antibody titers against all variants, especially the Delta variant, declined dramatically from four weeks to six months post-second mRNA vaccine dose. …”
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    Loss of Neutralizing Antibody Response to mRNA Vaccination against SARS-CoV-2 Variants: Differing Kinetics and Strong Boosting by Breakthrough Infection
  2. 2802
    “…Although a decreasing trend in NAb titer was observed in many cases, the NAb level was generally still protective. …”
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    Kinetic Characteristics of Neutralizing Antibody Responses Vary among Patients with COVID-19
  3. 2803
    “…All manufacturing approaches tend to follow the generally accepted dogma of increasing titer since it directly increases manufacturing output. …”
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    Exploring the limits of conventional small-scale CHO fed-batch for accelerated on demand monoclonal antibody production
  4. 2804
    “…The units were then under treatment with Mirasol PRT. The infectious titers were determined before and after treatment with an in house microtitration assay on Vero E6 cells. …”
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    SARS-CoV-2 variants inactivation of plasma units using a riboflavin and ultraviolet light-based photochemical treatment
  5. 2805
    “…We also found that, in the elderly, antibody titers negatively correlate with the age of the donor but, also, that antibody titers remain stable for at least 6 months after complete vaccination. …”
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    Vaccine Type-, Age- and Past Infection-Dependence of the Humoral Response to SARS-CoV-2 Spike S Protein
  6. 2806
    “…Herein, we demonstrate that equines hyper-immunized with chemically inactivated SARS-CoV-2 elicited high antibody titers with a strong virus-neutralizing potential, and F(ab’)(2) fragments purified from them displayed strong neutralization potential against five different SARS-CoV-2 variants. …”
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    Equine immunoglobulin fragment F(ab’)(2) displays high neutralizing capability against multiple SARS-CoV-2 variants
  7. 2807
    “…SP IgG titer was negatively correlated with age and alcohol consumption. …”
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    Vaccine-induced humoral response against SARS-CoV-2 dramatically declined but cellular immunity possibly remained at 6 months post BNT162b2 vaccination
  8. 2808
    “…Geometric mean plaque reduction neutralization titers against Delta-AY.1, Delta-AY.2, and Mu viruses are slightly lower than against USA-WA1/2020, but all sera neutralize the variant viruses to titers of ≥80, and neutralization titers against the Delta-∆144, Lambda, B.1.1.519 and Theta variants not significantly reduced relative to those against USA-WA1/2020. …”
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    BNT162b2-elicited neutralization of Delta plus, Lambda, Mu, B.1.1.519, and Theta SARS-CoV-2 variants
  9. 2809
    por Fong, Youyi, McDermott, Adrian B., Benkeser, David, Roels, Sanne, Stieh, Daniel J., Vandebosch, An, Gars, Mathieu Le, Van Roey, Griet A., Houchens, Christopher R., Martins, Karen, Jayashankar, Lakshmi, Castellino, Flora, Amoa-Awua, Obrimpong, Basappa, Manjula, Flach, Britta, Lin, Bob C., Moore, Christopher, Naisan, Mursal, Naqvi, Muhammed, Narpala, Sandeep, O’Connell, Sarah, Mueller, Allen, Serebryannyy, Leo, Castro, Mike, Wang, Jennifer, Petropoulos, Christos J., Luedtke, Alex, Hyrien, Ollivier, Lu, Yiwen, Yu, Chenchen, Borate, Bhavesh, van der Laan, Lars W. P., Hejazi, Nima S., Kenny, Avi, Carone, Marco, Wolfe, Daniel N., Sadoff, Jerald, Gray, Glenda E., Grinsztejn, Beatriz, Goepfert, Paul A., Little, Susan J., de Sousa, Leonardo Paiva, Maboa, Rebone, Randhawa, April K., Andrasik, Michele P., Hendriks, Jenny, Truyers, Carla, Struyf, Frank, Schuitemaker, Hanneke, Douoguih, Macaya, Kublin, James G., Corey, Lawrence, Neuzil, Kathleen M., Carpp, Lindsay N., Follmann, Dean, Gilbert, Peter B., Koup, Richard A., Donis, Ruben O.
    Publicado 2022
    “…Comparison of the vaccine efficacy by ID50 titer curves for ENSEMBLE-US, the COVE trial of the mRNA-1273 vaccine, and the COV002-UK trial of the AZD1222 vaccine supported consistency of the ID50 titer correlate of protection across trials and vaccine types.…”
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    Immune Correlates Analysis of a Single Ad26.COV2.S Dose in the ENSEMBLE COVID-19 Vaccine Efficacy Clinical Trial
  10. 2810
    “…A linear mixed-effects model supported that female gender, younger age groups, and being seropositive prevaccination maintained higher antibody titers. Curves became tighter with time progression, although titers from seropositive subjects decrease at a slower rate than seronegative ones. …”
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    Long-term serological SARS-CoV-2 IgG kinetics following mRNA COVID-19 vaccine: real-world data from a large cohort of healthcare workers
  11. 2811
    “…BACKGROUND: Evidence on the determinants of the magnitude of humoral responses and neutralizing titers in individuals with mild COVID-19 is scarce. …”
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    Virological and Clinical Determinants of the Magnitude of Humoral Responses to SARS-CoV-2 in Mild-Symptomatic Individuals
  12. 2812
    “…Higher antibody titers were measured in infected vaccinated individuals than in infected unvaccinated ones.…”
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    Lessons We Have Learned Regarding Seroprevalence in High and Low SARS-CoV-2 Contexts in Greece before the Omicron Pandemic Wave
  13. 2813
    “…The immunoglobulin replacement products tested have low anti-spike and receptor-binding domain (RBD) titers and neutralizing activity. In coronavirus disease 2019 (COVID-19)-naive individuals with PAD, anti-spike and RBD titers increase after mRNA vaccination but wane by 90 days. …”
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    mRNA vaccine boosting enhances antibody responses against SARS-CoV-2 Omicron variant in individuals with antibody deficiency syndromes
  14. 2814
    “…Both binding and neutralizing anti-MERS-CoV antibody titers increase substantially in all participants and exceed maximum titers observed after primary immunization more than 10-fold. …”
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    Increased neutralization and IgG epitope identification after MVA-MERS-S booster vaccination against Middle East respiratory syndrome
  15. 2815
    “…Depending on the type of virus, produced titers were 2- to 10-fold higher compared with those obtained by PEI transfection.…”
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    Efficient production of inhibitor-free foamy virus glycoprotein-containing retroviral vectors by proteoglycan-deficient packaging cells
  16. 2816
    “…The results of this study support strong associations between titers of food-specific IgG antibodies and intestinal permeability biomarkers in adults, to the extent that the presence of multiple IgG antibodies to food, and increasing IgG food titers, can be considered indicative of increased antibodies to LPS and occludin. …”
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    Associations between food-specific IgG antibodies and intestinal permeability biomarkers
  17. 2817
    “…Vaccination and boosting of 15 BFF with purified SARS-CoV-2 S1 subunit protein produced a nearly 150-fold increase in mean antibody titers compared to pre-vaccination titers. Serum antibody responses were highest in young animals, but in all vaccinees, antibody response declined rapidly. …”
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    Immunogenicity, Safety, and Anti-Viral Efficacy of a Subunit SARS-CoV-2 Vaccine Candidate in Captive Black-Footed Ferrets (Mustela nigripes) and Their Susceptibility to Viral Challenge
  18. 2818
    “…This titer could be further raised by codon optimization of auaA and by introducing the mevalonate pathway into the production strain. …”
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    Biocatalytic production of the antibiotic aurachin D in Escherichia coli
  19. 2819
    “…As a result, the titer was improved to 559.4 mg/L in shake flasks and to 3.89 g/L in fed-batch fermentation. …”
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    Coculture engineering for efficient production of vanillyl alcohol in Escherichia coli
  20. 2820
    “…To date, little is known about the durability and kinetics of antibody titers months after receiving a booster dose. In this work, we studied the dynamic of anti-Trimeric Spike (anti-TrimericS) IgG titer in the healthcare worker population of a large academic hospital in Northern Italy, in those who had received two vaccine doses plus a booster dose. …”
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    Impact of BNT162b2 Booster Dose on SARS-CoV-2 Anti-Trimeric Spike Antibody Dynamics in a Large Cohort of Italian Health Care Workers
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