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J Infect Dis ; 224(8): 1278-1286, 2021 10 28.
Article in English | MEDLINE | ID: covidwho-1316825


BACKGROUND: Bamlanivimab and casirivimab-imdevimab are authorized for treatment of mild to moderate coronavirus disease 2019 (COVID-19) in high-risk patients. We compared the outcomes of patients who received these therapies to identify factors associated with hospitalization and other clinical outcomes. METHODS: Adult patients who received monoclonal antibody from 19 November 2020 to 11 February 2021 were selected and divided into those who received bamlanivimab (n = 2747) and casirivimab-imdevimab (n = 849). The 28-day all-cause and COVID-19-related hospitalizations were compared between the groups. RESULTS: The population included 3596 patients; the median age was 62 years, and 50% were female. All had ≥1 medical comorbidity; 55% had multiple comorbidities. All-cause and COVID-19-related hospitalization rates at 28 days were 3.98% and 2.56%, respectively. After adjusting for medical comorbidities, there was no significant difference in all-cause and COVID-19-related hospitalization rates between bamlanivimab and casirivimab-imdevimab (adjusted hazard ratios [95% confidence interval], 1.4 [.9-2.2] and 1.6 [.8-2.7], respectively). Chronic kidney, respiratory and cardiovascular diseases, and immunocompromised status were associated with higher likelihood of hospitalization. CONCLUSIONS: This observational study on the use of bamlanivimab and casirivimab-imdevimab in high-risk patients showed similarly low rates of hospitalization. The number and type of medical comorbidities are associated with hospitalizations after monoclonal antibody treatment.

Antibodies, Monoclonal, Humanized/therapeutic use , COVID-19/drug therapy , Adolescent , Adult , Aged , Aged, 80 and over , COVID-19/diagnosis , COVID-19/epidemiology , Drug Combinations , Female , Hospitalization/statistics & numerical data , Humans , Male , Middle Aged , Multimorbidity , Retrospective Studies , Risk Factors , SARS-CoV-2/isolation & purification , Severity of Illness Index , Treatment Outcome , Young Adult
J Am Geriatr Soc ; 69(4): 868-873, 2021 04.
Article in English | MEDLINE | ID: covidwho-1096867


BACKGROUND: Residents of nursing homes and long-term care facilities are at increased risk for severe coronavirus disease-19 (COVID-19) but may not be able to access monoclonal antibody therapies offered at outpatient infusion centers due to frailty and logistical issues. We describe a mobile monoclonal antibody infusion program for patients with COVID-19 in skilled nursing facilities and provide descriptive data on its outcomes. DESIGN: Retrospective cohort study. SETTING: Collaboration between Mayo Clinic and skilled nursing facilities in Southeast Minnesota was developed to administer anti-spike monoclonal antibodies under the FDA Emergency Use Authorization. PARTICIPANTS: Seventy five residents of skilled nursing facilities at high risk of COVID-19 complications. EXPOSURE: Emergency use treatment with bamlanivimab and casirivimab-imdevimab. MEASUREMENTS: Hospitalization and medically attended visits. RESULTS: The mobile infusion unit, staffed by Mayo Clinic Infusion Therapy registered nurses and supported by the skilled nursing facility staff, infused anti-spike monoclonal antibodies to 45 of 75 patients (average age, 77.8 years) in December 2020. The infusions occurred at an average of 4.3 days after COVID-19 diagnosis. Fourteen days after infusion, there were no deaths, two emergency department visits, and three hospitalizations, for a combined event rate of 11.1%. There was one reported adverse event. CONCLUSION: The implementation of a mobile infusion unit embedded in a collaborative process resulted in rapid infusion of monoclonal antibodies to high-risk COVID-19 patients in skilled nursing facilities, who would otherwise be unable to access the novel therapies. The therapies were well tolerated and appear beneficial. Further study is warranted to explore the scalability and efficacy of this program.

Antibodies, Monoclonal, Humanized/therapeutic use , COVID-19/drug therapy , Mobile Health Units , Skilled Nursing Facilities , Aged , Drug Combinations , Female , Humans , Male , Minnesota , Patients/statistics & numerical data , Referral and Consultation , Retrospective Studies