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Coronavirus Disease 2019 Convalescent Plasma Outpatient Therapy to Prevent Outpatient Hospitalization: A Meta-Analysis of Individual Participant Data From 5 Randomized Trials.
- Source :
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Clinical Infectious Diseases . 6/15/2023, Vol. 76 Issue 12, p2077-2086. 10p. - Publication Year :
- 2023
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Abstract
- Background Outpatient monoclonal antibodies are no longer effective and antiviral treatments for coronavirus disease 2019 (COVID-19) disease remain largely unavailable in many countries worldwide. Although treatment with COVID-19 convalescent plasma (CCP) is promising, clinical trials among outpatients have shown mixed results. Methods We conducted an individual participant data meta-analysis from outpatient trials to assess the overall risk reduction for all-cause hospitalizations by day 28 in transfused participants. Relevant trials were identified by searching Medline, Embase, medRxiv, World Health Organization COVID-19 Research Database, Cochrane Library, and Web of Science from January 2020 to September 2022. Results Five included studies from 4 countries enrolled and transfused 2620 adult patients. Comorbidities were present in 1795 (69%). The virus neutralizing antibody dilutional titer levels ranged from 8 to 14 580 in diverse assays. One hundred sixty of 1315 (12.2%) control patients were hospitalized, versus 111 of 1305 (8.5%) CCP-treated patients, yielding a 3.7% (95% confidence interval [CI], 1.3%–6.0%; P =.001) absolute risk reduction and 30.1% relative risk reduction for all-cause hospitalization. The hospitalization reduction was greatest in those with both early transfusion and high titer with a 7.6% absolute risk reduction (95% CI, 4.0%–11.1%; P =.0001) accompanied by at 51.4% relative risk reduction. No significant reduction in hospitalization was seen with treatment >5 days after symptom onset or in those receiving CCP with antibody titers below the median titer. Conclusions Among outpatients with COVID-19, treatment with CCP reduced the rate of all-cause hospitalization and may be most effective when given within 5 days of symptom onset and when antibody titer is higher. [ABSTRACT FROM AUTHOR]
- Subjects :
- *MEDICAL databases
*RELATIVE medical risk
*META-analysis
*MEDICAL information storage & retrieval systems
*CONFIDENCE intervals
*IMMUNOGLOBULINS
*SYSTEMATIC reviews
*PREVENTIVE health services
*CONVALESCENT plasma
*HOSPITAL care
*DESCRIPTIVE statistics
*MEDLINE
*COVID-19 pandemic
*OUTPATIENT services in hospitals
*COMORBIDITY
Subjects
Details
- Language :
- English
- ISSN :
- 10584838
- Volume :
- 76
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Clinical Infectious Diseases
- Publication Type :
- Academic Journal
- Accession number :
- 164368212
- Full Text :
- https://doi.org/10.1093/cid/ciad088