ArticleMediterranean journal of hematology and infectious diseases2022
Pre and Post-Monoclonal Infusion Neutralizing Activity in a Subgroup of Patients Treated in the Presence of two SARS-CoV-2 Dominant Variant of Concern (VOCs) and an Ongoing Vaccination. Overall Clinical Efficacy of Two Monoclonal Antibodies Association in Umbria.
Article in Mediterranean journal of hematology and infectious diseases, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background and Objective: In patients with mild-to-moderate COVID-19 and at high risk of progression, casirivimab/imdevimab and bamlanivimab/etesivimab were utilized in Umbria from late April to November 2021. This period was characterized by an initial prevalence of alpha (B1.1.1.7) and its progressive substitution with the delta variant (B1.617.2). Many delta infections occurred in patients already recently vaccinated.Our study aimed to observe the clinical outcome of patients treated with mAbs associations in a subgroup in which viral isolation was obtained, the pre and post-infusion neutralizing antibody activity against their viral isolate. Methods: In this retrospective observational study, the clinical outcome before and 30 days after infusion, the baseline neutralizing activity of sera against their viral isolate, and the titers of neutralizing antibodies (NAbTs) one-hour post-infusion relative to the type of mAbs associations were evaluated. Results: Better efficacy of the mAbs combinations relative to monotherapy regarding global hospitalization ( Conclusions: Alpha infections occurred prevalently in unvaccinated patients or after 5-6 months, while delta infections prevailed in vaccinated ones. A poor neutralizing activity in most of these patients was seen. A higher NAbT after infusion of casirivimab/imdevimab was observed.
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