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  1. 2021
    “…Background: Previous studies have established that streptococcal antibody titer is correlated with a diagnosis of acute rheumatic fever (ARF). …”
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    Utility of Human Immune Responses to GAS Antigens as a Diagnostic Indicator for ARF: A Systematic Review
  2. 2022
    “…However, all subjects in both groups maintained antibody titers above the lower threshold limit at each time-point considered. …”
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    Evaluation of the immune response to COVID-19 vaccine mRNA BNT162b2 and correlation with previous COVID-19 infection
  3. 2023
    “…The decrease in anti-S1 antibody titers in time were considered to be a disadvantage and an undesired phenomenon.…”
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    Comparison of an inactivated Covid19 vaccine-induced antibody response with concurrent natural Covid19 infection
  4. 2024
    “…Objectives: The objective was to describe the changes of severe fever with thrombocytopenia syndrome virus (SFTSV) and antibody in the disease course and explore the relationship between antibody titers and patients’ prognosis. Methods: The levels of SFTSV, virus-specific immunoglobulin M (IgM), immunoglobulin G (IgG) titers, and cytokines in 37 patients with severe fever with thrombocytopenia syndrome (SFTS) were measured dynamically by real-time PCR and ELISA during the disease course; IgG titers were followed up in 53 cases. …”
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    Time Course of Severe Fever With Thrombocytopenia Syndrome Virus and Antibodies in Patients by Long-Term Follow-Up Study, China
  5. 2025
    “…Mean IgG antibody titers were lower in hemodialysis patients than controls (78 ± 35 vs. 90 ± 20 AU/mL, p = 0.002). …”
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    Evolution of SARS-CoV-2-Neutralizing Antibodies after Two Standard Dose Vaccinations, Risk Factors for Non-Response and Effect of a Third Dose Booster Vaccination in Non-Responders on Hemodialysis: A Prospective Multi-Centre Cohort Study
  6. 2026
    “…Second doses in previously infected individuals further increased titers, even 90 dpv (N = 75). Basal antibody titers had more influence on post-vaccination anti-RBD responses than the time elapsed between diagnosis and vaccination (N = 274). …”
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    Long-term analysis of antibodies elicited by SPUTNIK V: A prospective cohort study in Tucumán, Argentina
  7. 2027
    “…The SARS-CoV-2 TrimericS IgG titers were measured 1, 3, 6 and 12 months after the second dose. …”
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    The humoral response of mRNA COVID-19 vaccine in hematological diseases: The HEMVACO study
  8. 2028
    por Savoie, Christopher, Lippé, Roger
    Publicado 2022
    “…First, testing of five different cell lines (MRC-5, Huh7.5, Vero, HCT-8, HRT-18) indicated that the physiologically relevant MRC-5 human lung cell line produced among the highest viral titers. HRT-18 may however be an interesting alternative as they are quick growing cells that also led to higher viral titers and a better tropism for various HCoV-OC43 variants. …”
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    Optimizing human coronavirus OC43 growth and titration
  9. 2029
    “…This litter, however, had similar vaccine-induced serum IgG titers when compared to the other piglets in this study. …”
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    Plasma Cytokines and Birth Weight as Biomarkers of Vaccine-Induced Humoral Responses in Piglets
  10. 2030
    “…As for APS IgG titers, all participants tested negative in the three draws. …”
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    The effect of the BNT162b2 vaccine on antinuclear antibody and antiphospholipid antibody levels
  11. 2031
    “…We have compared the neutralizing antibody titers obtained using two virus strains, B.1.160 and B.1.617.2 (Delta variant). …”
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    Decreased Efficiency of Neutralizing Antibodies from Previously Infected or Vaccinated Individuals against the B.1.617.2 (Delta) SARS-CoV-2 Variant
  12. 2032
    “…Among all variants tested, Delta and N.10 presented the lowest geometric mean of neutralizing antibody titers, and B.1.1.7, presented the highest titers. …”
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    Sera of patients infected by earlier lineages of SARS-CoV-2 are capable to neutralize later emerged variants of concern
  13. 2033
    “…There were no significant differences in the IgG titers by the use, type, or dosage of antipyretic medication. …”
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    Correlation of Postvaccination Fever With Specific Antibody Response to Severe Acute Respiratory Syndrome Coronavirus 2 BNT162b2 Booster and No Significant Influence of Antipyretic Medication
  14. 2034
    “…SARS-CoV-2 IgG antibody titers were determined by quantitative serological methods. …”
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    Risk Factors Influencing Seroconversion after Inactive SARS-CoV-2 Vaccination in People Living with Obesity
  15. 2035
    “…CCP may be most effective when given within 5 days of symptom onset and when antibody titer is higher.…”
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    COVID-19 Convalescent Plasma Outpatient Therapy to Prevent Outpatient Hospitalization: A Meta-analysis of Individual Participant Data From Five Randomized Trials
  16. 2036
    “…Six of 12 patients who underwent ITI treatment in the extension phase (high titer [ n  = 5], low titer [ n  = 1]) achieved a negative inhibitor titer. …”
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    BAY 81-8973 Efficacy and Safety in Previously Untreated and Minimally Treated Children with Severe Hemophilia A: The LEOPOLD Kids Trial
  17. 2037
    “…Differences of titers higher than one dilution were considered discordant. …”
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    Reproducibility of double agar gel immunodiffusion test using stored serum and plasma from paracoccidioidomycosis patients
  18. 2038
    “…Furthermore, we performed receiver operating characteristic (ROC) curve analyses to determine which immunoassays were most suitable for assessing nAb titers exceeding a specific cutoff (NT titer, ≥80) and found that the NeutraLISA and the cPass assays reached the highest area under the curve (AUC), exceeding 0.91. …”
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    Comprehensive Comparison of Seven SARS-CoV-2-Specific Surrogate Virus Neutralization and Anti-Spike IgG Antibody Assays Using a Live-Virus Neutralization Assay as a Reference
  19. 2039
    “…Anti-S-IgG <0.8, ≥0.8 to 15, and ≥15 U/mL were considered negative, weak positive, and strongly positive, respectively, whereas anti–nucleocapsid protein IgG was negative. Anti-S-IgG titer was determined in 990 HVs and 102 donors. RESULTS: Anti-S-IgG titers were 154, 2475, and 1181 U/mL in the recipient, HV, and donor groups, respectively, with values significantly lower in recipients. …”
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    Comparison of Humoral Response in Kidney Transplant Recipients and Donors and Healthy Volunteers Following Second Dose of SARS-CoV-2 mRNA Vaccine
  20. 2040
    por Sabin, Albert B.
    Publicado 1952
    “…In most patients the Type 2 neutralizing antibody either completely disappeared at 3 months (in one patient between 2 and 4 weeks) or dropped in titer, while the Type 1 or homotypic antibody persisted in high titer. …”
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    TRANSITORY APPEARANCE OF TYPE 2 NEUTRALIZING ANTIBODY IN PATIENTS INFECTED WITH TYPE 1 POLIOMYELITIS VIRUS
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