Monoclonal Antibody Treatment of Breakthrough COVID-19 in Fully Vaccinated Individuals with High-Risk Comorbidities
2021
Breakthrough COVID-19 may occur in fully vaccinated persons. In this cohort of 1395 persons (mean age, 54.3 years; 60% female; median body mass index, 30.7) who developed breakthrough COVID-19, there were 107 (7.7%) who required hospitalization by day 28. Hospitalization was significantly associated with the number of medical comorbidities. Anti-spike monoclonal antibody treatment was significantly associated with a lower risk of hospitalization (Odds Ratio: 0.227; 95% confidence interval, 0.128 - 0.403; p<0.001). The number needed to treat to prevent one hospitalization was 225 among the lowest-risk patient group compared to 4 among the groups with highest numbers of medical comorbidity. summaryBreakthrough COVID-19 may occur among vaccinated individuals with a high number of medical comorbidities, especially during the surge of SARS-CoV-2 Delta variant. Treatment with anti-spike monoclonal antibody was associated with significantly lower rates of hospitalization and oxygen supplementation.
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