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Gohil SK, Septimus E, Kleinman K, Varma N, Avery TR, Heim L, Rahm R, Cooper WS, Cooper M, McLean LE, Nickolay NG, Weinstein RA, Burgess LH, Coady MH, Rosen E, Sljivo S, Sands KE, Moody J, Vigeant J, Rashid S, Gilbert RF, Smith KN, Carver B, Poland RE, Hickok J, Sturdevant SG, Calderwood MS, Weiland A, Kubiak DW, Reddy S, Neuhauser MM, Srinivasan A, Jernigan JA, Hayden MK, Gowda A, Eibensteiner K, Wolf R, Perlin JB, Platt R, Huang SS. Stewardship Prompts to Improve Antibiotic Selection for Pneumonia: The INSPIRE Randomized Clinical Trial. JAMA 2024:2817976. [PMID: 38639729 DOI: 10.1001/jama.2024.6248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
Importance Pneumonia is the most common infection requiring hospitalization and is a major reason for overuse of extended-spectrum antibiotics. Despite low risk of multidrug-resistant organism (MDRO) infection, clinical uncertainty often drives initial antibiotic selection. Strategies to limit empiric antibiotic overuse for patients with pneumonia are needed. Objective To evaluate whether computerized provider order entry (CPOE) prompts providing patient- and pathogen-specific MDRO infection risk estimates could reduce empiric extended-spectrum antibiotics for non-critically ill patients admitted with pneumonia. Design, Setting, and Participants Cluster-randomized trial in 59 US community hospitals comparing the effect of a CPOE stewardship bundle (education, feedback, and real-time MDRO risk-based CPOE prompts; n = 29 hospitals) vs routine stewardship (n = 30 hospitals) on antibiotic selection during the first 3 hospital days (empiric period) in non-critically ill adults (≥18 years) hospitalized with pneumonia. There was an 18-month baseline period from April 1, 2017, to September 30, 2018, and a 15-month intervention period from April 1, 2019, to June 30, 2020. Intervention CPOE prompts recommending standard-spectrum antibiotics in patients ordered to receive extended-spectrum antibiotics during the empiric period who have low estimated absolute risk (<10%) of MDRO pneumonia, coupled with feedback and education. Main Outcomes and Measures The primary outcome was empiric (first 3 days of hospitalization) extended-spectrum antibiotic days of therapy. Secondary outcomes included empiric vancomycin and antipseudomonal days of therapy and safety outcomes included days to intensive care unit (ICU) transfer and hospital length of stay. Outcomes compared differences between baseline and intervention periods across strategies. Results Among 59 hospitals with 96 451 (51 671 in the baseline period and 44 780 in the intervention period) adult patients admitted with pneumonia, the mean (SD) age of patients was 68.1 (17.0) years, 48.1% were men, and the median (IQR) Elixhauser comorbidity count was 4 (2-6). Compared with routine stewardship, the group using CPOE prompts had a 28.4% reduction in empiric extended-spectrum days of therapy (rate ratio, 0.72 [95% CI, 0.66-0.78]; P < .001). Safety outcomes of mean days to ICU transfer (6.5 vs 7.1 days) and hospital length of stay (6.8 vs 7.1 days) did not differ significantly between the routine and CPOE intervention groups. Conclusions and Relevance Empiric extended-spectrum antibiotic use was significantly lower among adults admitted with pneumonia to non-ICU settings in hospitals using education, feedback, and CPOE prompts recommending standard-spectrum antibiotics for patients at low risk of MDRO infection, compared with routine stewardship practices. Hospital length of stay and days to ICU transfer were unchanged. Trial Registration ClinicalTrials.gov Identifier: NCT03697070.
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Affiliation(s)
- Shruti K Gohil
- Division of Infectious Diseases, University of California, Irvine School of Medicine, Irvine
| | - Edward Septimus
- Department of Population Medicine, Harvard Pilgrim Healthcare Institute, Harvard Medical School, Boston, Massachusetts
| | - Ken Kleinman
- Biostatistics and Epidemiology, University of Massachusetts, Amherst
| | - Neha Varma
- Department of Population Medicine, Harvard Pilgrim Healthcare Institute, Boston, Massachusetts
| | - Taliser R Avery
- Department of Population Medicine, Harvard Pilgrim Healthcare Institute, Harvard Medical School, Boston, Massachusetts
| | - Lauren Heim
- Division of Infectious Diseases, University of California, Irvine School of Medicine, Irvine
| | - Risa Rahm
- HCA Healthcare, Nashville, Tennessee
| | | | | | | | | | | | | | - Micaela H Coady
- Department of Population Medicine, Harvard Pilgrim Healthcare Institute, Boston, Massachusetts
| | - Edward Rosen
- Department of Population Medicine, Harvard Pilgrim Healthcare Institute, Boston, Massachusetts
| | - Selsebil Sljivo
- Department of Population Medicine, Harvard Pilgrim Healthcare Institute, Boston, Massachusetts
| | - Kenneth E Sands
- Department of Population Medicine, Harvard Pilgrim Healthcare Institute, Harvard Medical School, Boston, Massachusetts
- HCA Healthcare, Nashville, Tennessee
| | | | - Justin Vigeant
- Department of Population Medicine, Harvard Pilgrim Healthcare Institute, Boston, Massachusetts
| | - Syma Rashid
- Division of Infectious Diseases, University of California, Irvine School of Medicine, Irvine
| | - Rebecca F Gilbert
- Department of Population Medicine, Harvard Pilgrim Healthcare Institute, Boston, Massachusetts
| | | | | | - Russell E Poland
- Department of Population Medicine, Harvard Pilgrim Healthcare Institute, Harvard Medical School, Boston, Massachusetts
- HCA Healthcare, Nashville, Tennessee
| | | | | | - Michael S Calderwood
- Section of Infectious Disease and International Health, Dartmouth Hitchcock Medical Center, Lebanon, New Hampshire
| | - Anastasiia Weiland
- Division of Infectious Diseases, University of California, Irvine School of Medicine, Irvine
| | | | - Sujan Reddy
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | | | | | - John A Jernigan
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | | | - Abinav Gowda
- Department of Population Medicine, Harvard Pilgrim Healthcare Institute, Boston, Massachusetts
| | - Katyuska Eibensteiner
- Department of Population Medicine, Harvard Pilgrim Healthcare Institute, Boston, Massachusetts
| | - Robert Wolf
- Department of Population Medicine, Harvard Pilgrim Healthcare Institute, Boston, Massachusetts
| | - Jonathan B Perlin
- HCA Healthcare, Nashville, Tennessee
- Now with The Joint Commission, Oakbrook Terrace, Illinois
| | - Richard Platt
- Department of Population Medicine, Harvard Pilgrim Healthcare Institute, Harvard Medical School, Boston, Massachusetts
| | - Susan S Huang
- Division of Infectious Diseases, University of California, Irvine School of Medicine, Irvine
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2
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Gohil SK, Septimus E, Kleinman K, Varma N, Avery TR, Heim L, Rahm R, Cooper WS, Cooper M, McLean LE, Nickolay NG, Weinstein RA, Burgess LH, Coady MH, Rosen E, Sljivo S, Sands KE, Moody J, Vigeant J, Rashid S, Gilbert RF, Smith KN, Carver B, Poland RE, Hickok J, Sturdevant SG, Calderwood MS, Weiland A, Kubiak DW, Reddy S, Neuhauser MM, Srinivasan A, Jernigan JA, Hayden MK, Gowda A, Eibensteiner K, Wolf R, Perlin JB, Platt R, Huang SS. Stewardship Prompts to Improve Antibiotic Selection for Urinary Tract Infection: The INSPIRE Randomized Clinical Trial. JAMA 2024:2817975. [PMID: 38639723 DOI: 10.1001/jama.2024.6259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
Importance Urinary tract infection (UTI) is the second most common infection leading to hospitalization and is often associated with gram-negative multidrug-resistant organisms (MDROs). Clinicians overuse extended-spectrum antibiotics although most patients are at low risk for MDRO infection. Safe strategies to limit overuse of empiric antibiotics are needed. Objective To evaluate whether computerized provider order entry (CPOE) prompts providing patient- and pathogen-specific MDRO risk estimates could reduce use of empiric extended-spectrum antibiotics for treatment of UTI. Design, Setting, and Participants Cluster-randomized trial in 59 US community hospitals comparing the effect of a CPOE stewardship bundle (education, feedback, and real-time and risk-based CPOE prompts; 29 hospitals) vs routine stewardship (n = 30 hospitals) on antibiotic selection during the first 3 hospital days (empiric period) in noncritically ill adults (≥18 years) hospitalized with UTI with an 18-month baseline (April 1, 2017-September 30, 2018) and 15-month intervention period (April 1, 2019-June 30, 2020). Interventions CPOE prompts recommending empiric standard-spectrum antibiotics in patients ordered to receive extended-spectrum antibiotics who have low estimated absolute risk (<10%) of MDRO UTI, coupled with feedback and education. Main Outcomes and Measures The primary outcome was empiric (first 3 days of hospitalization) extended-spectrum antibiotic days of therapy. Secondary outcomes included empiric vancomycin and antipseudomonal days of therapy. Safety outcomes included days to intensive care unit (ICU) transfer and hospital length of stay. Outcomes were assessed using generalized linear mixed-effect models to assess differences between the baseline and intervention periods. Results Among 127 403 adult patients (71 991 baseline and 55 412 intervention period) admitted with UTI in 59 hospitals, the mean (SD) age was 69.4 (17.9) years, 30.5% were male, and the median Elixhauser Comorbidity Index count was 4 (IQR, 2-5). Compared with routine stewardship, the group using CPOE prompts had a 17.4% (95% CI, 11.2%-23.2%) reduction in empiric extended-spectrum days of therapy (rate ratio, 0.83 [95% CI, 0.77-0.89]; P < .001). The safety outcomes of mean days to ICU transfer (6.6 vs 7.0 days) and hospital length of stay (6.3 vs 6.5 days) did not differ significantly between the routine and intervention groups, respectively. Conclusions and Relevance Compared with routine stewardship, CPOE prompts providing real-time recommendations for standard-spectrum antibiotics for patients with low MDRO risk coupled with feedback and education significantly reduced empiric extended-spectrum antibiotic use among noncritically ill adults admitted with UTI without changing hospital length of stay or days to ICU transfers. Trial Registration ClinicalTrials.gov Identifier: NCT03697096.
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Affiliation(s)
- Shruti K Gohil
- Division of Infectious Diseases, University of California, Irvine School of Medicine, Irvine
| | - Edward Septimus
- Department of Population Medicine, Harvard Pilgrim Healthcare Institute, Harvard Medical School, Boston, Massachusetts
| | - Ken Kleinman
- Biostatistics and Epidemiology, University of Massachusetts, Amherst
| | - Neha Varma
- Department of Population Medicine, Harvard Pilgrim Health Care Institute, Boston, Massachusetts
| | - Taliser R Avery
- Department of Population Medicine, Harvard Pilgrim Healthcare Institute, Harvard Medical School, Boston, Massachusetts
| | - Lauren Heim
- Division of Infectious Diseases, University of California, Irvine School of Medicine, Irvine
| | - Risa Rahm
- HCA Healthcare, Nashville, Tennessee
| | | | | | | | | | | | | | - Micaela H Coady
- Department of Population Medicine, Harvard Pilgrim Health Care Institute, Boston, Massachusetts
| | - Edward Rosen
- Department of Population Medicine, Harvard Pilgrim Health Care Institute, Boston, Massachusetts
| | - Selsebil Sljivo
- Department of Population Medicine, Harvard Pilgrim Health Care Institute, Boston, Massachusetts
| | - Kenneth E Sands
- Department of Population Medicine, Harvard Pilgrim Healthcare Institute, Harvard Medical School, Boston, Massachusetts
- HCA Healthcare, Nashville, Tennessee
| | | | - Justin Vigeant
- Department of Population Medicine, Harvard Pilgrim Health Care Institute, Boston, Massachusetts
| | - Syma Rashid
- Division of Infectious Diseases, University of California, Irvine School of Medicine, Irvine
| | - Rebecca F Gilbert
- Department of Population Medicine, Harvard Pilgrim Health Care Institute, Boston, Massachusetts
| | | | | | - Russell E Poland
- Department of Population Medicine, Harvard Pilgrim Healthcare Institute, Harvard Medical School, Boston, Massachusetts
- HCA Healthcare, Nashville, Tennessee
| | | | | | - Michael S Calderwood
- Section of Infectious Disease and International Health, Dartmouth Hitchcock Medical Center, Lebanon, New Hampshire
| | - Anastasiia Weiland
- Division of Infectious Diseases, University of California, Irvine School of Medicine, Irvine
| | | | - Sujan Reddy
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | | | | | - John A Jernigan
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | | | - Abinav Gowda
- Department of Population Medicine, Harvard Pilgrim Health Care Institute, Boston, Massachusetts
| | - Katyuska Eibensteiner
- Department of Population Medicine, Harvard Pilgrim Health Care Institute, Boston, Massachusetts
| | - Robert Wolf
- Department of Population Medicine, Harvard Pilgrim Health Care Institute, Boston, Massachusetts
| | - Jonathan B Perlin
- HCA Healthcare, Nashville, Tennessee
- Now with The Joint Commission, Oakbrook Terrace, Illinois
| | - Richard Platt
- Department of Population Medicine, Harvard Pilgrim Healthcare Institute, Harvard Medical School, Boston, Massachusetts
| | - Susan S Huang
- Division of Infectious Diseases, University of California, Irvine School of Medicine, Irvine
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Li Y, Choudhary MC, Regan J, Boucau J, Nathan A, Speidel T, Liew MY, Edelstein GE, Kawano Y, Uddin R, Deo R, Marino C, Getz MA, Reynolds Z, Barry M, Gilbert RF, Tien D, Sagar S, Vyas TD, Flynn JP, Hammond SP, Novack LA, Choi B, Cernadas M, Wallace ZS, Sparks JA, Vyas JM, Seaman MS, Gaiha GD, Siedner MJ, Barczak AK, Lemieux JE, Li JZ. SARS-CoV-2 viral clearance and evolution varies by type and severity of immunodeficiency. Sci Transl Med 2024; 16:eadk1599. [PMID: 38266109 PMCID: PMC10982957 DOI: 10.1126/scitranslmed.adk1599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Accepted: 12/18/2023] [Indexed: 01/26/2024]
Abstract
Despite vaccination and antiviral therapies, immunocompromised individuals are at risk for prolonged severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection, but the immune defects that predispose an individual to persistent coronavirus disease 2019 (COVID-19) remain incompletely understood. In this study, we performed detailed viro-immunologic analyses of a prospective cohort of participants with COVID-19. The median times to nasal viral RNA and culture clearance in individuals with severe immunosuppression due to hematologic malignancy or transplant (S-HT) were 72 and 40 days, respectively, both of which were significantly longer than clearance rates in individuals with severe immunosuppression due to autoimmunity or B cell deficiency (S-A), individuals with nonsevere immunodeficiency, and nonimmunocompromised groups (P < 0.01). Participants who were severely immunocompromised had greater SARS-CoV-2 evolution and a higher risk of developing resistance against therapeutic monoclonal antibodies. Both S-HT and S-A participants had diminished SARS-CoV-2-specific humoral responses, whereas only the S-HT group had reduced T cell-mediated responses. This highlights the varied risk of persistent COVID-19 across distinct immunosuppressive conditions and suggests that suppression of both B and T cell responses results in the highest contributing risk of persistent infection.
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Affiliation(s)
- Yijia Li
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
- University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA
| | - Manish C. Choudhary
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - James Regan
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Julie Boucau
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA
| | - Anusha Nathan
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA
- Program in Health Sciences and Technology, Harvard Medical School and Massachusetts Institute of Technology, Boston, MA 02115, USA
| | - Tessa Speidel
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - May Yee Liew
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Gregory E. Edelstein
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Yumeko Kawano
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Rockib Uddin
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Rinki Deo
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Caitlin Marino
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA
| | - Matthew A. Getz
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA
| | - Zahra Reynolds
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Mamadou Barry
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Rebecca F. Gilbert
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Dessie Tien
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Shruti Sagar
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Tammy D. Vyas
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - James P. Flynn
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Sarah P. Hammond
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Lewis A. Novack
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Bina Choi
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Manuela Cernadas
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Zachary S. Wallace
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Jeffrey A. Sparks
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Jatin M. Vyas
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA
| | - Michael S. Seaman
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Gaurav D. Gaiha
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA
| | - Mark J. Siedner
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Amy K. Barczak
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA
| | - Jacob E. Lemieux
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Jonathan Z. Li
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
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4
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Edelstein GE, Boucau J, Uddin R, Marino C, Liew MY, Barry M, Choudhary MC, Gilbert RF, Reynolds Z, Li Y, Tien D, Sagar S, Vyas TD, Kawano Y, Sparks JA, Hammond SP, Wallace Z, Vyas JM, Barczak AK, Lemieux JE, Li JZ, Siedner MJ. SARS-CoV-2 Virologic Rebound With Nirmatrelvir-Ritonavir Therapy : An Observational Study. Ann Intern Med 2023; 176:1577-1585. [PMID: 37956428 PMCID: PMC10644265 DOI: 10.7326/m23-1756] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2023] Open
Abstract
BACKGROUND Data are conflicting regarding an association between treatment of acute COVID-19 with nirmatrelvir-ritonavir (N-R) and virologic rebound (VR). OBJECTIVE To compare the frequency of VR in patients with and without N-R treatment for acute COVID-19. DESIGN Observational cohort study. SETTING Multicenter health care system in Boston, Massachusetts. PARTICIPANTS Ambulatory adults with acute COVID-19 with and without use of N-R. INTERVENTION Receipt of 5 days of N-R treatment versus no COVID-19 therapy. MEASUREMENTS The primary outcome was VR, defined as either a positive SARS-CoV-2 viral culture result after a prior negative result or 2 consecutive viral loads above 4.0 log10 copies/mL that were also at least 1.0 log10 copies/mL higher than a prior viral load below 4.0 log10 copies/mL. RESULTS Compared with untreated persons (n = 55), those taking N-R (n = 72) were older, received more COVID-19 vaccinations, and more commonly had immunosuppression. Fifteen participants (20.8%) taking N-R had VR versus 1 (1.8%) who was untreated (absolute difference, 19.0 percentage points [95% CI, 9.0 to 29.0 percentage points]; P = 0.001). All persons with VR had a positive viral culture result after a prior negative result. In multivariable models, only N-R use was associated with VR (adjusted odds ratio, 10.02 [CI, 1.13 to 88.74]; P = 0.038). Virologic rebound was more common among those who started therapy within 2 days of symptom onset (26.3%) than among those who started 2 or more days after symptom onset (0%) (P = 0.030). Among participants receiving N-R, those who had VR had prolonged shedding of replication-competent virus compared with those who did not have VR (median, 14 vs. 3 days). Eight of 16 participants (50% [CI, 25% to 75%]) with VR also reported symptom rebound; 2 were completely asymptomatic. No post-VR resistance mutations were detected. LIMITATIONS Observational study design with differences between the treated and untreated groups; positive viral culture result was used as a surrogate marker for risk for ongoing viral transmission. CONCLUSION Virologic rebound occurred in approximately 1 in 5 people taking N-R, often without symptom rebound, and was associated with shedding of replication-competent virus. PRIMARY FUNDING SOURCE National Institutes of Health.
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Affiliation(s)
| | - Julie Boucau
- Ragon Institute of MGH, MIT and Harvard, Cambridge, Massachusetts (J.B., C.M.)
| | - Rockib Uddin
- Massachusetts General Hospital, Boston, Massachusetts (R.U., M.Y.L., M.B., R.F.G., Z.R., D.T., S.S., T.D.V., S.P.H., Z.W.)
| | - Caitlin Marino
- Ragon Institute of MGH, MIT and Harvard, Cambridge, Massachusetts (J.B., C.M.)
| | - May Y Liew
- Massachusetts General Hospital, Boston, Massachusetts (R.U., M.Y.L., M.B., R.F.G., Z.R., D.T., S.S., T.D.V., S.P.H., Z.W.)
| | - Mamadou Barry
- Massachusetts General Hospital, Boston, Massachusetts (R.U., M.Y.L., M.B., R.F.G., Z.R., D.T., S.S., T.D.V., S.P.H., Z.W.)
| | - Manish C Choudhary
- Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts (M.C.C., J.Z.L.)
| | - Rebecca F Gilbert
- Massachusetts General Hospital, Boston, Massachusetts (R.U., M.Y.L., M.B., R.F.G., Z.R., D.T., S.S., T.D.V., S.P.H., Z.W.)
| | - Zahra Reynolds
- Massachusetts General Hospital, Boston, Massachusetts (R.U., M.Y.L., M.B., R.F.G., Z.R., D.T., S.S., T.D.V., S.P.H., Z.W.)
| | - Yijia Li
- Brigham and Women's Hospital and Massachusetts General Hospital, Boston, Massachusetts, and University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania (Y.L.)
| | - Dessie Tien
- Massachusetts General Hospital, Boston, Massachusetts (R.U., M.Y.L., M.B., R.F.G., Z.R., D.T., S.S., T.D.V., S.P.H., Z.W.)
| | - Shruti Sagar
- Massachusetts General Hospital, Boston, Massachusetts (R.U., M.Y.L., M.B., R.F.G., Z.R., D.T., S.S., T.D.V., S.P.H., Z.W.)
| | - Tammy D Vyas
- Massachusetts General Hospital, Boston, Massachusetts (R.U., M.Y.L., M.B., R.F.G., Z.R., D.T., S.S., T.D.V., S.P.H., Z.W.)
| | - Yumeko Kawano
- Brigham and Women's Hospital, Boston, Massachusetts (G.E.E., Y.K., J.A.S.)
| | - Jeffrey A Sparks
- Brigham and Women's Hospital, Boston, Massachusetts (G.E.E., Y.K., J.A.S.)
| | - Sarah P Hammond
- Massachusetts General Hospital, Boston, Massachusetts (R.U., M.Y.L., M.B., R.F.G., Z.R., D.T., S.S., T.D.V., S.P.H., Z.W.)
| | - Zachary Wallace
- Massachusetts General Hospital, Boston, Massachusetts (R.U., M.Y.L., M.B., R.F.G., Z.R., D.T., S.S., T.D.V., S.P.H., Z.W.)
| | - Jatin M Vyas
- Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts (J.M.V.)
| | - Amy K Barczak
- Ragon Institute of MGH, MIT and Harvard, Cambridge, Massachusetts, and Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts (A.K.B.)
| | - Jacob E Lemieux
- Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, and Broad Institute, Cambridge, Massachusetts (J.E.L.)
| | - Jonathan Z Li
- Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts (M.C.C., J.Z.L.)
| | - Mark J Siedner
- Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, and Africa Health Research Institute, KwaZulu-Natal, South Africa (M.J.S.)
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5
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Rautenberg TA, Ng SK, George G, Moosa MYS, McCluskey SM, Gilbert RF, Pillay S, Aturinda I, Ard KL, Muyindike WR, Musinguzi N, Masette G, Pillay M, Moodley P, Brijkumar J, Gandhi RT, Johnson B, Sunpath H, Bwana MB, Marconi VC, Siedner MJ. Determinants of health-related quality of life in people with Human Immunodeficiency Virus, failing first-line treatment in Africa. Health Qual Life Outcomes 2023; 21:94. [PMID: 37605150 PMCID: PMC10441724 DOI: 10.1186/s12955-023-02179-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 08/02/2023] [Indexed: 08/23/2023] Open
Abstract
BACKGROUND Antiretroviral treatment improves health related quality of life (HRQoL) of people with human immunodeficiency virus (PWH). However, one third initiating first-line treatment experience virological failure and the determinants of HRQoL in this key population are unknown. Our study aims to identify determinants of among PWH failing antiretroviral treatment in sub-Saharan Africa. METHODS We analysed data from a cohort of PWH having virological failure (> 1,000 copies/mL) on first-line ART in South Africa and Uganda. We measured HRQoL using the EuroQOL EQ-5D-3L and used a two-part regression model to obtain by-country analyses for South Africa and Uganda. The first part identifies risk factors that were associated with the likelihood of participants reporting perfect health (utility = 1) versus non-perfect health (utility < 1). The second part identifies risk factors that were associated with the EQ-5 L-3L utility scores for participants reporting non-perfect health. We performed sensitivity analyses to compare the results between the two-part model using tobit models and ordinary least squares regression. RESULTS In both countries, males were more likely to report perfect health and participants with at least one comorbidity were less likely to report perfect health. In South Africa, participants with side effects and in Uganda those with opportunistic infections were also less likely to report perfect health. In Uganda, participants with 100% ART adherence were more likely to report perfect health. In South Africa, high HIV viral load, experiencing ART side effects, and the presence of opportunistic infections were each associated with lower HRQoL, whereas participants with 100% ART adherence reported higher HRQoL. In Uganda participants with lower CD4 count had lower HRQoL. CONCLUSION Markers of advanced disease (opportunistic infection, high viral load, low CD4), side effects, comorbidities and lack of ART adherence negatively impacted HRQoL for PWH experiencing virological failure. TRIAL REGISTRATION ClinicalTrials.gov: NCT02787499.
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Affiliation(s)
- Tamlyn A Rautenberg
- School of Medicine and Dentistry, Centre for Applied Health Economics, Griffith University, Australia (Sir Samuel Griffith Centre N78 Room 2.34), Nathan campus, QLD, 4111, Australia.
- Menzies Health Institute Queensland, Southport, Australia.
- Metro North Hospital and Health Service Queensland, Herston, Australia.
| | - Shu Kay Ng
- School of Medicine and Dentistry, Centre for Applied Health Economics, Griffith University, Australia (Sir Samuel Griffith Centre N78 Room 2.34), Nathan campus, QLD, 4111, Australia
- Menzies Health Institute Queensland, Southport, Australia
| | - Gavin George
- Health Economics and HIV Research Division, University of KwaZulu-Natal, Durban, South Africa
- Division of Social Medicine and Global Health, Lund University, Lund, Sweden
| | | | - Suzanne M McCluskey
- Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
- Department of Medicine, Harvard Medical School, Boston, MA, USA
| | - Rebecca F Gilbert
- Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Selvan Pillay
- College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Isaac Aturinda
- Faculty of Medicine, Mbarara University of Science and Technology, Mbarara, Uganda
| | - Kevin L Ard
- Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
- Department of Medicine, Harvard Medical School, Boston, MA, USA
| | - Winnie R Muyindike
- Faculty of Medicine, Mbarara University of Science and Technology, Mbarara, Uganda
| | - Nicholas Musinguzi
- Faculty of Medicine, Mbarara University of Science and Technology, Mbarara, Uganda
| | - Godfrey Masette
- Faculty of Medicine, Mbarara University of Science and Technology, Mbarara, Uganda
| | | | - Pravi Moodley
- Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
- National Health Laboratory Service, Durban, South Africa
| | - Jaysingh Brijkumar
- College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Rajesh T Gandhi
- Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
- Department of Medicine, Harvard Medical School, Boston, MA, USA
| | - Brent Johnson
- Department of Biostatistics and Computation Biology, University of Rochester, Rochester, NY, USA
| | - Henry Sunpath
- College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Mwebesa B Bwana
- Faculty of Medicine, Mbarara University of Science and Technology, Mbarara, Uganda
| | - Vincent C Marconi
- Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
- Department of Global Health, Rollins School of Public Health, Atlanta, GA, USA
| | - Mark J Siedner
- College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
- Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
- Department of Medicine, Harvard Medical School, Boston, MA, USA
- Faculty of Medicine, Mbarara University of Science and Technology, Mbarara, Uganda
- Africa Health Research Institute, KwaZulu-Natal, Durban, South Africa
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6
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Li Y, Choudhary MC, Regan J, Boucau J, Nathan A, Speidel T, Liew MY, Edelstein GE, Kawano Y, Uddin R, Deo R, Marino C, Getz MA, Reynold Z, Barry M, Gilbert RF, Tien D, Sagar S, Vyas TD, Flynn JP, Hammond SP, Novack LA, Choi B, Cernadas M, Wallace ZS, Sparks JA, Vyas JM, Seaman MS, Gaiha GD, Siedner MJ, Barczak AK, Lemieux JE, Li JZ. SARS-CoV-2 Viral Clearance and Evolution Varies by Extent of Immunodeficiency. medRxiv 2023:2023.07.31.23293441. [PMID: 37577493 PMCID: PMC10418302 DOI: 10.1101/2023.07.31.23293441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
Despite vaccination and antiviral therapies, immunocompromised individuals are at risk for prolonged SARS-CoV-2 infection, but the immune defects that predispose to persistent COVID-19 remain incompletely understood. In this study, we performed detailed viro-immunologic analyses of a prospective cohort of participants with COVID-19. The median time to nasal viral RNA and culture clearance in the severe hematologic malignancy/transplant group (S-HT) were 72 and 40 days, respectively, which were significantly longer than clearance rates in the severe autoimmune/B-cell deficient (S-A), non-severe, and non-immunocompromised groups (P<0.001). Participants who were severely immunocompromised had greater SARS-CoV-2 evolution and a higher risk of developing antiviral treatment resistance. Both S-HT and S-A participants had diminished SARS-CoV-2-specific humoral, while only the S-HT group had reduced T cell-mediated responses. This highlights the varied risk of persistent COVID-19 across immunosuppressive conditions and suggests that suppression of both B and T cell responses results in the highest contributing risk of persistent infection.
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Affiliation(s)
- Yijia Li
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Manish C Choudhary
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - James Regan
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Julie Boucau
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
| | - Anusha Nathan
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
- Program in Health Sciences and Technology, Harvard Medical School and Massachusetts Institute of Technology, Boston, MA 02115, USA
| | - Tessa Speidel
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - May Yee Liew
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Gregory E Edelstein
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Yumeko Kawano
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Rockib Uddin
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Rinki Deo
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Caitlin Marino
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
| | - Matthew A Getz
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
| | - Zahra Reynold
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Mamadou Barry
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Rebecca F Gilbert
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Dessie Tien
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Shruti Sagar
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Tammy D Vyas
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - James P Flynn
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Sarah P Hammond
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Lewis A Novack
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Bina Choi
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Manuela Cernadas
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Zachary S Wallace
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Jeffrey A Sparks
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Jatin M Vyas
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
| | - Michael S Seaman
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Gaurav D Gaiha
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
| | - Mark J Siedner
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Amy K Barczak
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
| | - Jacob E Lemieux
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Jonathan Z Li
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
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7
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Edelstein GE, Boucau J, Uddin R, Marino C, Liew MY, Barry M, Choudhary MC, Gilbert RF, Reynolds Z, Li Y, Tien D, Sagar S, Vyas TD, Kawano Y, Sparks JA, Hammond SP, Wallace Z, Vyas JM, Barczak AK, Lemieux JE, Li JZ, Siedner MJ. SARS-CoV-2 virologic rebound with nirmatrelvir-ritonavir therapy. medRxiv 2023:2023.06.23.23288598. [PMID: 37425934 PMCID: PMC10327262 DOI: 10.1101/2023.06.23.23288598] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/11/2023]
Abstract
Objective To compare the frequency of replication-competent virologic rebound with and without nirmatrelvir-ritonavir treatment for acute COVID-19. Secondary aims were to estimate the validity of symptoms to detect rebound and the incidence of emergent nirmatrelvir-resistance mutations after rebound. Design Observational cohort study. Setting Multicenter healthcare system in Boston, Massachusetts. Participants We enrolled ambulatory adults with a positive COVID-19 test and/or a prescription for nirmatrelvir-ritonavir. Exposures Receipt of 5 days of nirmatrelvir-ritonavir treatment versus no COVID-19 therapy. Main Outcome and Measures The primary outcome was COVID-19 virologic rebound, defined as either (1) a positive SARS-CoV-2 viral culture following a prior negative culture or (2) two consecutive viral loads ≥4.0 log10 copies/milliliter after a prior reduction in viral load to <4.0 log10 copies/milliliter. Results Compared with untreated individuals (n=55), those taking nirmatrelvir-ritonavir (n=72) were older, received more COVID-19 vaccinations, and were more commonly immunosuppressed. Fifteen individuals (20.8%) taking nirmatrelvir-ritonavir experienced virologic rebound versus one (1.8%) of the untreated (absolute difference 19.0% [95%CI 9.0-29.0%], P=0.001). In multivariable models, only N-R was associated with VR (AOR 10.02, 95%CI 1.13-88.74). VR occurred more commonly among those with earlier nirmatrelvir-ritonavir initiation (29.0%, 16.7% and 0% when initiated days 0, 1, and ≥2 after diagnosis, respectively, P=0.089). Among participants on N-R, those experiencing rebound had prolonged shedding of replication-competent virus compared to those that did not rebound (median: 14 vs 3 days). Only 8/16 with virologic rebound reported worsening symptoms (50%, 95%CI 25%-75%); 2 were completely asymptomatic. We detected no post-rebound nirmatrelvir-resistance mutations in the NSP5 protease gene. Conclusions and Relevance Virologic rebound occurred in approximately one in five people taking nirmatrelvir-ritonavir and often occurred without worsening symptoms. Because it is associated with replication-competent viral shedding, close monitoring and potential isolation of those who rebound should be considered.
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Affiliation(s)
| | - Julie Boucau
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
| | | | - Caitlin Marino
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
| | - May Y. Liew
- Massachusetts General Hospital, Boston, MA, USA
| | | | - Manish C. Choudhary
- Brigham and Women’s Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | | | | | - Yijia Li
- Brigham and Women’s Hospital, Boston, MA, USA
- Massachusetts General Hospital, Boston, MA, USA
- University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Dessie Tien
- Massachusetts General Hospital, Boston, MA, USA
| | | | | | | | | | | | | | - Jatin M. Vyas
- Massachusetts General Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Amy K. Barczak
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
- Massachusetts General Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Jacob E. Lemieux
- Massachusetts General Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
- Broad Institute, Cambridge, MA, USA
| | - Jonathan Z. Li
- Brigham and Women’s Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Mark J. Siedner
- Massachusetts General Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
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8
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Rautenberg TA, Ng SK, George G, Moosa MYS, McCluskey SM, Gilbert RF, Pillay S, Aturinda I, Ard KL, Muyindike W, Musinguzi N, Masette G, Pillay M, Moodley P, Brijkumar J, Gandhi RT, Johnson B, Sunpath H, Bwana MB, Marconi VC, Siedner MJ. Seemingly Unrelated Regression Analysis of the Cost and Health-Related Quality of Life Outcomes of the REVAMP Randomized Clinical Trial. Value Health Reg Issues 2023; 35:42-47. [PMID: 36863066 PMCID: PMC10256267 DOI: 10.1016/j.vhri.2022.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 11/29/2022] [Accepted: 12/17/2022] [Indexed: 03/04/2023]
Abstract
OBJECTIVE This study aimed to evaluate the 9-month cost and health-related quality of life (HRQOL) outcomes of resistance versus viral load testing strategies to manage virological failure in low-middle income countries. METHODS We analyzed secondary outcomes from the REVAMP clinical trial: a pragmatic, open label, parallel-arm randomized trial investigating resistance versus viral load testing for individuals failing first-line treatment in South Africa and Uganda. We collected resource data, valued according to local cost data and used the 3-level version of EQ-5D to measure HRQOL at baseline and 9 months. We applied seemingly unrelated regression equations to account for the correlation between cost and HRQOL. We conducted intention-to-treat analyses with multiple imputation using chained equations for missing data and performed sensitivity analyses using complete cases. RESULTS For South Africa, resistance testing and opportunistic infections were associated with statistically significantly higher total costs, and virological suppression was associated with lower total cost. Higher baseline utility, higher cluster of differentiation 4 (CD4) count, and virological suppression were associated with better HRQOL. For Uganda, resistance testing and switching to second-line treatment were associated with higher total cost, and higher CD4 was associated with lower total cost. Higher baseline utility, higher CD4 count, and virological suppression were associated with better HRQOL. Sensitivity analyses of the complete-case analysis confirmed the overall results. CONCLUSION Resistance testing showed no cost or HRQOL advantage in South Africa or Uganda over the 9-month REVAMP clinical trial.
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Affiliation(s)
- Tamlyn A Rautenberg
- Centre for Applied Health Economics, Griffith University, Brisbane, QLD, Australia; Menzies Health Institute Queensland, Griffith University, Gold Coast, QLD, Australia; Allied Health Services, Metro North Hospital and Health Service, Brisbane, QLD, Australia.
| | - Shu Kay Ng
- Centre for Applied Health Economics, Griffith University, Brisbane, QLD, Australia
| | - Gavin George
- Health Economics and HIV Research Division, University of KwaZulu-Natal, Durban, KwaZulu-Natal, South Africa; Division of Social Medicine and Global Health, Lund University, Lund, Sweden
| | - Mahomed-Yunus S Moosa
- School of Clinical Medicine, University of KwaZulu-Natal, Durban, KwaZulu-Natal, South Africa
| | - Suzanne M McCluskey
- Department of Medicine, Massachusetts General Hospital, Boston, MA, USA; Department of Medicine, Harvard Medical School, Boston, MA, USA
| | - Rebecca F Gilbert
- Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Selvan Pillay
- School of Medicine, University of KwaZulu-Natal, Durban, KwaZulu-Natal, South Africa
| | - Isaac Aturinda
- Department of Internal Medicine, Mbarara University of Science and Technology, Mbarara, Uganda
| | - Kevin L Ard
- Department of Medicine, Massachusetts General Hospital, Boston, MA, USA; Department of Medicine, Harvard Medical School, Boston, MA, USA
| | - Winnie Muyindike
- Department of Internal Medicine, Mbarara University of Science and Technology, Mbarara, Uganda
| | - Nicholas Musinguzi
- Department of Internal Medicine, Mbarara University of Science and Technology, Mbarara, Uganda
| | - Godfrey Masette
- Department of Internal Medicine, Mbarara University of Science and Technology, Mbarara, Uganda
| | - Melendhran Pillay
- Department of Virology, National Health Laboratory Service, Durban, South Africa
| | - Pravi Moodley
- Department of Virology, National Health Laboratory Service, Durban, South Africa; Department of Virology, University of KwaZulu-Natal, Durban, KwaZulu-Natal, South Africa
| | - Jaysingh Brijkumar
- Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Durban, KwaZulu-Natal, South Africa
| | - Rajesh T Gandhi
- Department of Medicine, Harvard Medical School, Boston, MA, USA
| | - Brent Johnson
- Department of Biostatistics and Computation Biology, University of Rochester, Rochester, NY, USA
| | - Henry Sunpath
- Department of Medicine, University of KwaZulu-Natal, Durban, KwaZulu-Natal, South Africa
| | - Mwebesa B Bwana
- Mbarara University of Science and Technology, Mbarara, Uganda
| | - Vincent C Marconi
- Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA; Department of Global Health, Rollins School of Public Health, Atlanta, GA, USA
| | - Mark J Siedner
- Department of Medicine, Massachusetts General Hospital, Boston, MA, USA; Department of Medicine, Harvard Medical School, Boston, MA, USA; School of Medicine, University of KwaZulu-Natal, Durban, KwaZulu-Natal, South Africa; Department of Internal Medicine, Mbarara University of Science and Technology, Mbarara, Uganda; Department of Medicine, University of KwaZulu-Natal, Durban, KwaZulu-Natal, South Africa; Africa Health Research Institute, KwaZulu-Natal, South Africa
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9
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Seaman MS, Siedner MJ, Boucau J, Lavine CL, Ghantous F, Liew MY, Mathews JI, Singh A, Marino C, Regan J, Uddin R, Choudhary MC, Flynn JP, Chen G, Stuckwisch AM, Lipiner T, Kittilson A, Melberg M, Gilbert RF, Reynolds Z, Iyer SL, Chamberlin GC, Vyas TD, Vyas JM, Goldberg MB, Luban J, Li JZ, Barczak AK, Lemieux JE. Vaccine breakthrough infection leads to distinct profiles of neutralizing antibody responses by SARS-CoV-2 variant. JCI Insight 2022; 7:e159944. [PMID: 36214224 PMCID: PMC9675445 DOI: 10.1172/jci.insight.159944] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 08/26/2022] [Indexed: 08/15/2023] Open
Abstract
Protective immunity against SARS-CoV-2 infection after COVID-19 vaccination may differ by variant. We enrolled vaccinated (n = 39) and unvaccinated (n = 11) individuals with acute, symptomatic SARS-CoV-2 Delta or Omicron infection and performed SARS-CoV-2 viral load quantification, whole-genome sequencing, and variant-specific antibody characterization at the time of acute illness and convalescence. Viral load at the time of infection was inversely correlated with antibody binding and neutralizing antibody responses. Across all variants tested, convalescent neutralization titers in unvaccinated individuals were markedly lower than in vaccinated individuals. Increases in antibody titers and neutralizing activity occurred at convalescence in a variant-specific manner. For example, among individuals infected with the Delta variant, neutralizing antibody responses were weakest against BA.2, whereas infection with Omicron BA.1 variant generated a broader response against all tested variants, including BA.2.
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Affiliation(s)
- Michael S. Seaman
- Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
| | - Mark J. Siedner
- Harvard Medical School, Boston, Massachusetts, USA
- Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Julie Boucau
- Ragon Institute of MGH, MIT and Harvard, Cambridge, Massachusetts, USA
| | | | - Fadi Ghantous
- Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - May Y. Liew
- Massachusetts General Hospital, Boston, Massachusetts, USA
| | | | - Arshdeep Singh
- Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Caitlin Marino
- Ragon Institute of MGH, MIT and Harvard, Cambridge, Massachusetts, USA
| | - James Regan
- Brigham and Women’s Hospital Boston, Massachusetts, USA
| | - Rockib Uddin
- Massachusetts General Hospital, Boston, Massachusetts, USA
| | | | | | - Geoffrey Chen
- Massachusetts General Hospital, Boston, Massachusetts, USA
| | | | - Taryn Lipiner
- Massachusetts General Hospital, Boston, Massachusetts, USA
| | | | | | | | - Zahra Reynolds
- Massachusetts General Hospital, Boston, Massachusetts, USA
| | | | | | - Tammy D. Vyas
- Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Jatin M. Vyas
- Harvard Medical School, Boston, Massachusetts, USA
- Massachusetts General Hospital, Boston, Massachusetts, USA
- Broad Institute, Cambridge, Massachusetts, USA
| | - Marcia B. Goldberg
- Harvard Medical School, Boston, Massachusetts, USA
- Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Jeremy Luban
- Ragon Institute of MGH, MIT and Harvard, Cambridge, Massachusetts, USA
- Broad Institute, Cambridge, Massachusetts, USA
- UMass Med School, Worcester, Massachusetts, USA
| | - Jonathan Z. Li
- Harvard Medical School, Boston, Massachusetts, USA
- Brigham and Women’s Hospital Boston, Massachusetts, USA
| | - Amy K. Barczak
- Harvard Medical School, Boston, Massachusetts, USA
- Massachusetts General Hospital, Boston, Massachusetts, USA
- Ragon Institute of MGH, MIT and Harvard, Cambridge, Massachusetts, USA
| | - Jacob E. Lemieux
- Harvard Medical School, Boston, Massachusetts, USA
- Massachusetts General Hospital, Boston, Massachusetts, USA
- Broad Institute, Cambridge, Massachusetts, USA
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10
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Boucau J, Marino C, Regan J, Uddin R, Choudhary MC, Flynn JP, Chen G, Stuckwisch AM, Mathews J, Liew MY, Singh A, Lipiner T, Kittilson A, Melberg M, Li Y, Gilbert RF, Reynolds Z, Iyer SL, Chamberlin GC, Vyas TD, Goldberg MB, Vyas JM, Li JZ, Lemieux JE, Siedner MJ, Barczak AK. Duration of Shedding of Culturable Virus in SARS-CoV-2 Omicron (BA.1) Infection. N Engl J Med 2022; 387:275-277. [PMID: 35767428 PMCID: PMC9258747 DOI: 10.1056/nejmc2202092] [Citation(s) in RCA: 92] [Impact Index Per Article: 46.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
| | | | | | | | | | | | | | | | | | - May Y Liew
- Massachusetts General Hospital, Boston, MA
| | | | | | | | | | - Yijia Li
- Brigham and Women's Hospital, Boston, MA
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11
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Siedner MJ, Alba C, Fitzmaurice KP, Gilbert RF, Scott JA, Shebl FM, Ciaranello A, Reddy KP, Freedberg KA. Cost-effectiveness of Coronavirus Disease 2019 Vaccination in Low- and Middle-Income Countries. J Infect Dis 2022; 226:1887-1896. [PMID: 35696544 PMCID: PMC9214172 DOI: 10.1093/infdis/jiac243] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 06/10/2022] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Despite the advent of safe and effective coronavirus disease 2019 vaccines, pervasive inequities in global vaccination persist. METHODS We projected health benefits and donor costs of delivering vaccines for up to 60% of the population in 91 low- and middle-income countries (LMICs). We modeled a highly contagious (Re at model start, 1.7), low-virulence (infection fatality ratio [IFR], 0.32%) "Omicron-like" variant and a similarly contagious "severe" variant (IFR, 0.59%) over 360 days, accounting for country-specific age structure and healthcare capacity. Costs included vaccination startup (US$630 million) and per-person procurement and delivery (US$12.46/person vaccinated). RESULTS In the Omicron-like scenario, increasing current vaccination coverage to achieve at least 15% in each of the 91 LMICs would prevent 11 million new infections and 120 000 deaths, at a cost of US$0.95 billion, for an incremental cost-effectiveness ratio (ICER) of US$670/year of life saved (YLS). Increases in vaccination coverage to 60% would additionally prevent up to 68 million infections and 160 000 deaths, with ICERs <US$8000/YLS. ICERs were <US$4000/YLS under the more severe variant scenario and generally robust to assumptions about vaccine effectiveness, uptake, and costs. CONCLUSIONS Funding expanded COVID-19 vaccine delivery in LMICs would save hundreds of thousands of lives, be similarly or more cost-effective than other donor-funded global aid programs, and improve health equity.
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Affiliation(s)
- Mark J. Siedner
- Corresponding Author: Mark J. Siedner, MD MPH Medical Practice Evaluation Center, Massachusetts General Hospital 100 Cambridge Street, Suite 1600, Boston, MA 02114, USA Fax: 617-724-1637 Telephone: 617-726-4686
| | - Christopher Alba
- Medical Practice Evaluation Center, Massachusetts General Hospital, Boston, MA, USA
| | | | - Rebecca F. Gilbert
- Medical Practice Evaluation Center, Massachusetts General Hospital, Boston, MA, USA
| | - Justine A. Scott
- Medical Practice Evaluation Center, Massachusetts General Hospital, Boston, MA, USA
| | - Fatma M. Shebl
- Medical Practice Evaluation Center, Massachusetts General Hospital, Boston, MA, USA
| | - Andrea Ciaranello
- Medical Practice Evaluation Center, Massachusetts General Hospital, Boston, MA, USA,Harvard Medical School, Boston, MA, USA,Division of Infectious Diseases, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA,Harvard University Center for AIDS Research, Cambridge, MA, USA
| | - Krishna P. Reddy
- Medical Practice Evaluation Center, Massachusetts General Hospital, Boston, MA, USA,Harvard Medical School, Boston, MA, USA,Division of Pulmonary and Critical Care Medicine, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Kenneth A. Freedberg
- Alternate Corresponding Author: Kenneth A. Freedberg, MD, MSc Medical Practice Evaluation Center, Massachusetts General Hospital 100 Cambridge Street, Suite 1600, Boston, MA 02114, USA Fax: 617-726-6063
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12
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Seaman MS, Siedner MJ, Boucau J, Lavine CL, Ghantous F, Liew MY, Mathews J, Singh A, Marino C, Regan J, Uddin R, Choudhary MC, Flynn JP, Chen G, Stuckwisch AM, Lipiner T, Kittilson A, Melberg M, Gilbert RF, Reynolds Z, Iyer SL, Chamberlin GC, Vyas TD, Vyas JM, Goldberg MB, Luban J, Li JZ, Barczak AK, Lemieux JE. Vaccine Breakthrough Infection with the SARS-CoV-2 Delta or Omicron (BA.1) Variant Leads to Distinct Profiles of Neutralizing Antibody Responses. medRxiv 2022:2022.03.02.22271731. [PMID: 35262094 PMCID: PMC8902886 DOI: 10.1101/2022.03.02.22271731] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
There is increasing evidence that the risk of SARS-CoV-2 infection among vaccinated individuals is variant-specific, suggesting that protective immunity against SARS-CoV-2 may differ by variant. We enrolled vaccinated (n = 39) and unvaccinated (n = 11) individuals with acute, symptomatic SARS-CoV-2 Delta or Omicron infection and performed SARS-CoV-2 viral load quantification, whole-genome sequencing, and variant-specific antibody characterization at the time of acute illness and convalescence. Viral load at the time of infection was inversely correlated with antibody binding and neutralizing antibody responses. Increases in antibody titers and neutralizing activity occurred at convalescence in a variant-specific manner. Across all variants tested, convalescent neutralization titers in unvaccinated individuals were markedly lower than in vaccinated individuals. For individuals infected with the Delta variant, neutralizing antibody responses were weakest against BA.2, whereas infection with Omicron BA.1 variant generated a broader response against all tested variants, including BA.2.
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Affiliation(s)
- Michael S Seaman
- Beth Israel Deaconess Medical Center, Boston, MA
- Harvard Medical School, Boston, MA
| | - Mark J Siedner
- Massachusetts General Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA
| | - Julie Boucau
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
- Harvard Medical School, Boston, MA
| | | | | | - May Y Liew
- Massachusetts General Hospital, Boston, MA, USA
| | | | | | - Caitlin Marino
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
| | - James Regan
- Brigham and Women's Hospital Boston, MA, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | - Jatin M Vyas
- Massachusetts General Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA
| | - Marcia B Goldberg
- Massachusetts General Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA
| | - Jeremy Luban
- UMass Med School, Worcester, MA, USA
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
- Broad Institute, Cambridge, MA, USA
| | | | - Amy K Barczak
- Massachusetts General Hospital, Boston, MA, USA
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
| | - Jacob E Lemieux
- Harvard Medical School, Boston, MA
- Massachusetts General Hospital, Boston, MA, USA
- Broad Institute, Cambridge, MA, USA
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13
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Boucau J, Marino C, Regan J, Uddin R, Choudhary MC, Flynn JP, Chen G, Stuckwisch AM, Mathews J, Liew MY, Singh A, Lipiner T, Kittilson A, Melberg M, Li Y, Gilbert RF, Reynolds Z, Iyer SL, Chamberlin GC, Vyas TD, Goldberg MB, Vyas JM, Li JZ, Lemieux JE, Siedner MJ, Barczak AK. Duration of viable virus shedding in SARS-CoV-2 omicron variant infection. medRxiv 2022:2022.03.01.22271582. [PMID: 35262089 PMCID: PMC8902872 DOI: 10.1101/2022.03.01.22271582] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Clinical features of SARS-CoV-2 Omicron variant infection, including incubation period and transmission rates, distinguish this variant from preceding variants. However, whether the duration of shedding of viable virus differs between omicron and previous variants is not well understood. To characterize how variant and vaccination status impact shedding of viable virus, we serially sampled symptomatic outpatients newly diagnosed with COVID-19. Anterior nasal swabs were tested for viral load, sequencing, and viral culture. Time to PCR conversion was similar between individuals infected with the Delta and the Omicron variant. Time to culture conversion was also similar, with a median time to culture conversion of 6 days (interquartile range 4-8 days) in both groups. There were also no differences in time to PCR or culture conversion by vaccination status.
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Affiliation(s)
- Julie Boucau
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
| | - Caitlin Marino
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
| | - James Regan
- Brigham and Women’s Hospital Boston, MA, USA
| | | | - Manish C. Choudhary
- Brigham and Women’s Hospital Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | | | | | | | | | - May Y. Liew
- Massachusetts General Hospital, Boston, MA, USA
| | | | | | | | | | - Yijia Li
- Brigham and Women’s Hospital Boston, MA, USA
| | | | | | | | | | | | - Marcia B. Goldberg
- Massachusetts General Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Jatin M. Vyas
- Massachusetts General Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Jonathan Z. Li
- Brigham and Women’s Hospital Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Jacob E. Lemieux
- Massachusetts General Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
- Broad Institute, Cambridge, MA, USA
| | - Mark J. Siedner
- Massachusetts General Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Amy K. Barczak
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
- Massachusetts General Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
- Communicating author:
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14
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Gilbert RF, Cichowitz C, Bibangambah P, Kim JH, Hemphill LC, Yang IT, Sentongo RN, Kakuhikire B, Christiani DC, Tsai AC, Okello S, Siedner MJ, North CM. Lung function and atherosclerosis: a cross-sectional study of multimorbidity in rural Uganda. BMC Pulm Med 2022; 22:12. [PMID: 34983492 PMCID: PMC8728924 DOI: 10.1186/s12890-021-01792-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 12/09/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Chronic obstructive pulmonary disease (COPD) is a leading cause of global mortality. In high-income settings, the presence of cardiovascular disease among people with COPD increases mortality and complicates longitudinal disease management. An estimated 26 million people are living with COPD in sub-Saharan Africa, where risk factors for co-occurring pulmonary and cardiovascular disease may differ from high-income settings but remain uncharacterized. As non-communicable diseases have become the leading cause of death in sub-Saharan Africa, defining multimorbidity in this setting is critical to inform the required scale-up of existing healthcare infrastructure. METHODS We measured lung function and carotid intima media thickness (cIMT) among participants in the UGANDAC Study. Study participants were over 40 years old and equally divided into people living with HIV (PLWH) and an age- and sex-similar, HIV-uninfected control population. We fit multivariable linear regression models to characterize the relationship between lung function (forced expiratory volume in one second, FEV1) and pre-clinical atherosclerosis (cIMT), and evaluated for effect modification by age, sex, smoking history, HIV, and socioeconomic status. RESULTS Of 265 participants, median age was 52 years, 125 (47%) were women, and 140 (53%) were PLWH. Most participants who met criteria for COPD were PLWH (13/17, 76%). Median cIMT was 0.67 mm (IQR: 0.60 to 0.74), which did not differ by HIV serostatus. In models adjusted for age, sex, socioeconomic status, smoking, and HIV, lower FEV1 was associated with increased cIMT (β = 0.006 per 200 mL FEV1 decrease; 95% CI 0.002 to 0.011, p = 0.01). There was no evidence that age, sex, HIV serostatus, smoking, or socioeconomic status modified the relationship between FEV1 and cIMT. CONCLUSIONS Impaired lung function was associated with increased cIMT, a measure of pre-clinical atherosclerosis, among adults with and without HIV in rural Uganda. Future work should explore how co-occurring lung and cardiovascular disease might share risk factors and contribute to health outcomes in sub-Saharan Africa.
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Affiliation(s)
- Rebecca F Gilbert
- Massachusetts General Hospital, 55 Fruit Street, BUL-148, Boston, MA, 02114, USA
| | - Cody Cichowitz
- Massachusetts General Hospital, 55 Fruit Street, BUL-148, Boston, MA, 02114, USA
| | | | - June-Ho Kim
- Brigham and Women's Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
| | - Linda C Hemphill
- Massachusetts General Hospital, 55 Fruit Street, BUL-148, Boston, MA, 02114, USA.,Harvard Medical School, Boston, MA, USA
| | | | - Ruth N Sentongo
- Mbarara University of Science and Technology, Mbarara, Uganda
| | | | - David C Christiani
- Massachusetts General Hospital, 55 Fruit Street, BUL-148, Boston, MA, 02114, USA.,Harvard TH Chan School of Public Health, Boston, MA, USA
| | - Alexander C Tsai
- Massachusetts General Hospital, 55 Fruit Street, BUL-148, Boston, MA, 02114, USA.,Mbarara University of Science and Technology, Mbarara, Uganda.,Harvard Medical School, Boston, MA, USA
| | - Samson Okello
- Mbarara University of Science and Technology, Mbarara, Uganda
| | - Mark J Siedner
- Massachusetts General Hospital, 55 Fruit Street, BUL-148, Boston, MA, 02114, USA.,Mbarara University of Science and Technology, Mbarara, Uganda.,Harvard Medical School, Boston, MA, USA
| | - Crystal M North
- Massachusetts General Hospital, 55 Fruit Street, BUL-148, Boston, MA, 02114, USA. .,Harvard Medical School, Boston, MA, USA.
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15
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Siedner MJ, Boucau J, Gilbert RF, Uddin R, Luu J, Haneuse S, Vyas T, Reynolds Z, Iyer S, Chamberlin GC, Goldstein RH, North CM, Sacks CA, Regan J, Flynn JP, Choudhary MC, Vyas JM, Barczak AK, Lemieux JE, Li JZ. Duration of viral shedding and culture positivity with post-vaccination SARS-CoV-2 delta variant infections. JCI Insight 2021; 7:155483. [PMID: 34871181 PMCID: PMC8855795 DOI: 10.1172/jci.insight.155483] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 12/03/2021] [Indexed: 11/17/2022] Open
Abstract
Isolation guidelines for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are largely derived from data collected prior to the emergence of the delta variant. We followed a cohort of ambulatory patients with postvaccination breakthrough SARS-CoV-2 infections with longitudinal collection of nasal swabs for SARS-CoV-2 viral load quantification, whole-genome sequencing, and viral culture. All delta variant infections in our cohort were symptomatic, compared with 64% of non-delta variant infections. Symptomatic delta variant breakthrough infections were characterized by higher initial viral load, longer duration of virologic shedding by PCR, greater likelihood of replication-competent virus at early stages of infection, and longer duration of culturable virus compared with non-delta variants. The duration of time since vaccination was also correlated with both duration of PCR positivity and duration of detection of replication-competent virus. Nonetheless, no individuals with symptomatic delta variant infections had replication-competent virus by day 10 after symptom onset or 24 hours after resolution of symptoms. These data support US CDC isolation guidelines as of November 2021, which recommend isolation for 10 days or until symptom resolution and reinforce the importance of prompt testing and isolation among symptomatic individuals with delta breakthrough infections. Additional data are needed to evaluate these relationships among asymptomatic and more severe delta variant breakthrough infections.
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Affiliation(s)
- Mark J Siedner
- Massachusetts General Hospital, Boston, United States of America
| | - Julie Boucau
- Ragon Institute of MGH, MIT and Harvard, Cambridge, United States of America
| | - Rebecca F Gilbert
- Department of Medicine, Massachusetts General Hospital, Boston, United States of America
| | - Rockib Uddin
- Department of Medicine, Massachusetts General Hospital, Boston, United States of America
| | - Jonathan Luu
- Department of Biostatistics, TH Chan Harvard School of Public Health, Boston, United States of America
| | - Sebastien Haneuse
- Department of Biostatistics, TH Chan Harvard School of Public Health, Boston, United States of America
| | - Tammy Vyas
- Department of Medicine, Massachusetts General Hospital, Boston, United States of America
| | - Zahra Reynolds
- Department of Medicine, Massachusetts General Hospital, Boston, United States of America
| | - Surabhi Iyer
- Department of Medicine, Massachusetts General Hospital, Boston, United States of America
| | - Grace C Chamberlin
- Department of Medicine, Massachusetts General Hospital, Boston, United States of America
| | - Robert H Goldstein
- Department of Medicine, Massachusetts General Hospital, Boston, United States of America
| | - Crystal M North
- Department of Medicine, Massachusetts General Hospital, Boston, United States of America
| | - Chana A Sacks
- Department of Medicine, Massachusetts General Hospital, Boston, United States of America
| | - James Regan
- Department of Medicine, Brigham and Women's Hospital, Cambridge, United States of America
| | - James P Flynn
- Department of Medicine, Brigham and Women's Hospital, Cambridge, United States of America
| | - Manish C Choudhary
- Department of Medicine, Brigham and Women's Hospital, Cambridge, United States of America
| | - Jatin M Vyas
- Department of Medicine, Massachusetts General Hospital, Boston, United States of America
| | - Amy K Barczak
- Ragon Institute of MGH, MIT and Harvard, Cambridge, United States of America
| | - Jacob E Lemieux
- Infectious Disease Unit, Massachusetts General Hospital, Boston, United States of America
| | - Jonathan Z Li
- Department of Infectious Disease, Brigham and Women's Hospital, Boston, United States of America
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16
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Siedner MJ, Moosa MYS, McCluskey S, Gilbert RF, Pillay S, Aturinda I, Ard K, Muyindike W, Musinguzi N, Masette G, Pillay M, Moodley P, Brijkumar J, Rautenberg T, George G, Gandhi RT, Johnson BA, Sunpath H, Bwana MB, Marconi VC. Resistance Testing for Management of HIV Virologic Failure in Sub-Saharan Africa : An Unblinded Randomized Controlled Trial. Ann Intern Med 2021; 174:1683-1692. [PMID: 34698502 PMCID: PMC8688215 DOI: 10.7326/m21-2229] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Virologic failure in HIV predicts the development of drug resistance and mortality. Genotypic resistance testing (GRT), which is the standard of care after virologic failure in high-income settings, is rarely implemented in sub-Saharan Africa. OBJECTIVE To estimate the effectiveness of GRT for improving virologic suppression rates among people with HIV in sub-Saharan Africa for whom first-line therapy fails. DESIGN Pragmatic, unblinded, randomized controlled trial. (ClinicalTrials.gov: NCT02787499). SETTING Ambulatory HIV clinics in the public sector in Uganda and South Africa. PATIENTS Adults receiving first-line antiretroviral therapy with a recent HIV RNA viral load of 1000 copies/mL or higher. INTERVENTION Participants were randomly assigned to receive standard of care (SOC), including adherence counseling sessions and repeated viral load testing, or immediate GRT. MEASUREMENTS The primary outcome of interest was achievement of an HIV RNA viral load below 200 copies/mL 9 months after enrollment. RESULTS The trial enrolled 840 persons, divided equally between countries. Approximately half (51%) were women. Most (72%) were receiving a regimen of tenofovir, emtricitabine, and efavirenz at enrollment. The rate of virologic suppression did not differ 9 months after enrollment between the GRT group (63% [263 of 417]) and SOC group (61% [256 of 423]; odds ratio [OR], 1.11 [95% CI, 0.83 to 1.49]; P = 0.46). Among participants with persistent failure (HIV RNA viral load ≥1000 copies/mL) at 9 months, the prevalence of drug resistance was higher in the SOC group (76% [78 of 103] vs. 59% [48 of 82]; OR, 2.30 [CI, 1.22 to 4.35]; P = 0.014). Other secondary outcomes, including 9-month survival and retention in care, were similar between groups. LIMITATION Participants were receiving nonnucleoside reverse transcriptase inhibitor-based therapy at enrollment, limiting the generalizability of the findings. CONCLUSION The addition of GRT to routine care after first-line virologic failure in Uganda and South Africa did not improve rates of resuppression. PRIMARY FUNDING SOURCE The President's Emergency Plan for AIDS Relief and the National Institute of Allergy and Infectious Diseases.
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Affiliation(s)
- Mark J Siedner
- Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, Mbarara University of Science and Technology, Mbarara, Uganda, Africa Health Research Institute, KwaZulu-Natal, South Africa, and University of KwaZulu-Natal, Durban, South Africa (M.J.S.)
| | | | - Suzanne McCluskey
- Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts (S.M., K.A., R.T.G.)
| | | | - Selvan Pillay
- University of KwaZulu-Natal, Durban, South Africa (M.S.M., S.P., J.B., G.G., H.S.)
| | - Isaac Aturinda
- Mbarara University of Science and Technology, Mbarara, Uganda (I.A., W.M., N.M., G.M., M.B.B.)
| | - Kevin Ard
- Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts (S.M., K.A., R.T.G.)
| | - Winnie Muyindike
- Mbarara University of Science and Technology, Mbarara, Uganda (I.A., W.M., N.M., G.M., M.B.B.)
| | - Nicholas Musinguzi
- Mbarara University of Science and Technology, Mbarara, Uganda (I.A., W.M., N.M., G.M., M.B.B.)
| | - Godfrey Masette
- Mbarara University of Science and Technology, Mbarara, Uganda (I.A., W.M., N.M., G.M., M.B.B.)
| | - Melendhran Pillay
- National Health Laboratory Service, Durban, South Africa (M.P., P.M.)
| | | | - Jaysingh Brijkumar
- University of KwaZulu-Natal, Durban, South Africa (M.S.M., S.P., J.B., G.G., H.S.)
| | | | - Gavin George
- University of KwaZulu-Natal, Durban, South Africa (M.S.M., S.P., J.B., G.G., H.S.)
| | - Rajesh T Gandhi
- Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts (S.M., K.A., R.T.G.)
| | | | - Henry Sunpath
- University of KwaZulu-Natal, Durban, South Africa (M.S.M., S.P., J.B., G.G., H.S.)
| | - Mwebesa B Bwana
- Mbarara University of Science and Technology, Mbarara, Uganda (I.A., W.M., N.M., G.M., M.B.B.)
| | - Vincent C Marconi
- Emory University School of Medicine and Rollins School of Public Health, Atlanta, Georgia (V.C.M.)
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17
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Reynolds Z, McCluskey SM, Moosa MYS, Gilbert RF, Pillay S, Aturinda I, Ard KL, Muyindike W, Musinguzi N, Masette G, Moodley P, Brijkumar J, Rautenberg T, George G, Johnson BA, Gandhi RT, Sunpath H, Marconi VC, Bwana MB, Siedner MJ. Who's slipping through the cracks? A comprehensive individual, clinical and health system characterization of people with virological failure on first-line HIV treatment in Uganda and South Africa. HIV Med 2021; 23:474-484. [PMID: 34755438 PMCID: PMC9010349 DOI: 10.1111/hiv.13203] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 10/18/2021] [Indexed: 11/29/2022]
Abstract
OBJECTIVES HIV virological failure remains a major threat to programme success in sub-Saharan Africa. While HIV drug resistance (HIVDR) and inadequate adherence are the main drivers of virological failure, the individual, clinical and health system characteristics that lead to poor outcomes are not well understood. The objective of this paper is to identify those characteristics among people failing first-line antiretroviral therapy (ART). METHODS We enrolled a cohort of adults in HIV care experiencing virological failure on first-line ART at five sites and used standard statistical methods to characterize them with a focus on three domains: individual/demographic, clinical, and health system, and compared each by country of enrolment. RESULTS Of 840 participants, 51% were women, the median duration on ART was 3.2 years [interquartile range (IQR) 1.1, 6.4 years] and the median CD4 cell count prior to failure was 281 cells/µL (IQR 121, 457 cells/µL). More than half of participants [53%; 95% confidence interval (CI) 49-56%] stated that they had > 90% adherence and 75% (95% CI 72-77%) took their ART on time all or most of the time. Conversely, the vast majority (90%; 95% CI 86-92%) with a completed genotypic drug resistance test had any HIV drug resistance. This population had high health system use, reporting a median of 3 (IQR 2.6) health care visits and a median of 1 (IQR 1.1) hospitalization in the preceding 6 months. CONCLUSIONS Patients failing first-line ART in sub-Saharan Africa generally report high rates of adherence to ART, have extremely high rates of HIV drug resistance and utilize significant health care resources. Health systems interventions to promptly detect and manage treatment failure will be a prerequisite to establishing control of the HIV epidemic.
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Affiliation(s)
| | - Suzanne M McCluskey
- Massachusetts General Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
| | | | | | | | - Isaac Aturinda
- Mbarara University of Science and Technology, Mbarara, Uganda
| | - Kevin L Ard
- Massachusetts General Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
| | | | | | - Godfrey Masette
- Mbarara University of Science and Technology, Mbarara, Uganda
| | - Pravi Moodley
- University of KwaZulu-Natal, Durban, South Africa.,National Health Laboratory Service, KwaZulu-Natal, Durban, South Africa
| | | | | | - Gavin George
- University of KwaZulu-Natal, Durban, South Africa
| | - Brent A Johnson
- Department of Biostatistics and Computation Biology, University of Rochester, Rochester, NY, USA
| | - Rajesh T Gandhi
- Massachusetts General Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
| | | | - Vincent C Marconi
- Emory University School of Medicine, Atlanta, GA, USA.,Department of Global Health, Emory University, Atlanta, GA, USA.,Emory Vaccine Center, Atlanta, GA, USA
| | | | - Mark J Siedner
- Massachusetts General Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA.,University of KwaZulu-Natal, Durban, South Africa.,Mbarara University of Science and Technology, Mbarara, Uganda.,Africa Health Research Institute, KwaZulu-Natal, Durban, South Africa
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18
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North CM, Barczak A, Goldstein RH, Healy BC, Finkelstein DM, Ding DD, Kim A, Boucau J, Shaw B, Gilbert RF, Vyas T, Reynolds Z, Siddle KJ, MacInnis BL, Regan J, Flynn JP, Choudhary MC, Vyas JM, Laskowski K, Dighe AS, Lemieux JE, Li JZ, Baden LR, Siedner MJ, Woolley AE, Sacks CA. Determining the Incidence of Asymptomatic SARS-CoV-2 among Early Recipients of COVID-19 Vaccines: A Prospective Cohort Study of Healthcare Workers before, during and after Vaccination [DISCOVER-COVID-19]. Clin Infect Dis 2021; 74:1275-1278. [PMID: 34363462 PMCID: PMC8436402 DOI: 10.1093/cid/ciab643] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Indexed: 01/19/2023] Open
Abstract
The impact of coronavirus disease 2019 vaccination on viral characteristics of breakthrough infections is unknown. In this prospective cohort study, incidence of severe acute respiratory syndrome coronavirus 2 infection decreased following vaccination. Although asymptomatic positive tests were observed following vaccination, the higher cycle thresholds, repeat negative tests, and inability to culture virus raise questions about their clinical significance.
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Affiliation(s)
- Crystal M North
- Department of Medicine, Massachusetts General Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
| | - Amy Barczak
- Department of Medicine, Massachusetts General Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA.,The Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA, USA
| | - Robert H Goldstein
- Department of Medicine, Massachusetts General Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
| | - Brian C Healy
- Harvard Medical School, Boston, MA, USA.,Department of Biostatistics, Massachusetts General Hospital, Boston, MA, USA
| | | | - Delaney D Ding
- Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Andy Kim
- Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Julie Boucau
- The Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA, USA
| | - Bennett Shaw
- Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Rebecca F Gilbert
- Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Tammy Vyas
- Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Zahra Reynolds
- Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | | | | | - James Regan
- Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - James P Flynn
- Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Manish C Choudhary
- Harvard Medical School, Boston, MA, USA.,Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Jatin M Vyas
- Department of Medicine, Massachusetts General Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
| | - Karl Laskowski
- Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Anand S Dighe
- Harvard Medical School, Boston, MA, USA.,Department of Pathology, Massachusetts General Hospital, Boston, MA, USA
| | - Jacob E Lemieux
- Department of Medicine, Massachusetts General Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
| | - Jonathan Z Li
- Harvard Medical School, Boston, MA, USA.,Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Lindsey R Baden
- Harvard Medical School, Boston, MA, USA.,Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Mark J Siedner
- Department of Medicine, Massachusetts General Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
| | - Ann E Woolley
- Harvard Medical School, Boston, MA, USA.,Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Chana A Sacks
- Department of Medicine, Massachusetts General Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
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19
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Tsai AC, Harling G, Reynolds Z, Gilbert RF, Siedner MJ. Coronavirus Disease 2019 (COVID-19) Transmission in the United States Before Versus After Relaxation of Statewide Social Distancing Measures. Clin Infect Dis 2021; 73:S120-S126. [PMID: 33009800 PMCID: PMC7797755 DOI: 10.1093/cid/ciaa1502] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND Weeks after issuing social distancing orders to suppress severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) transmission and reduce growth in cases of severe coronavirus disease 2019 (COVID-19), all US states and the District of Columbia partially or fully relaxed these measures. METHODS We identified all statewide social distancing measures that were implemented and/or relaxed in the United States between 10 March and 15 July 2020, triangulating data from state government and third-party sources. Using segmented linear regression, we estimated the extent to which relaxation of social distancing affected epidemic control, as indicated by the time-varying, state-specific effective reproduction number (Rt). RESULTS In the 8 weeks prior to relaxation, mean Rt declined by 0.012 units per day (95% confidence interval [CI], -.013 to -.012), and 46/51 jurisdictions achieved Rt < 1.0 by the date of relaxation. After relaxation of social distancing, Rt reversed course and began increasing by 0.007 units per day (95% CI, .006-.007), reaching a mean Rt of 1.16. Eight weeks later, the mean Rt was 1.16 and only 9/51 jurisdictions were maintaining an Rt < 1.0. Parallel models showed similar reversals in the growth of COVID-19 cases and deaths. Indicators often used to motivate relaxation at the time of relaxation (eg, test positivity rate <5%) predicted greater postrelaxation epidemic growth. CONCLUSIONS We detected an immediate and significant reversal in SARS-CoV-2 epidemic suppression after relaxation of social distancing measures across the United States. Premature relaxation of social distancing measures undermined the country's ability to control the disease burden associated with COVID-19.
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Affiliation(s)
- Alexander C Tsai
- Center for Global Health, Massachusetts General Hospital, Boston, Massachusetts, USA
- Health Policy Research Center, Massachusetts General Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
| | - Guy Harling
- University College London, London, United Kingdom
- Africa Health Research Institute, KwaZulu-Natal, South Africa
| | - Zahra Reynolds
- Medical Practice Evaluation Center, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Rebecca F Gilbert
- Medical Practice Evaluation Center, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Mark J Siedner
- Center for Global Health, Massachusetts General Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
- Africa Health Research Institute, KwaZulu-Natal, South Africa
- Medical Practice Evaluation Center, Massachusetts General Hospital, Boston, Massachusetts, USA
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Siedner MJ, Harling G, Reynolds Z, Gilbert RF, Haneuse S, Venkataramani AS, Tsai AC. Correction: Social distancing to slow the US COVID-19 epidemic: Longitudinal pretest-posttest comparison group study. PLoS Med 2020; 17:e1003376. [PMID: 33022016 PMCID: PMC7537852 DOI: 10.1371/journal.pmed.1003376] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
[This corrects the article DOI: 10.1371/journal.pmed.1003244.].
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Siedner MJ, Harling G, Reynolds Z, Gilbert RF, Haneuse S, Venkataramani AS, Tsai AC. Social distancing to slow the US COVID-19 epidemic: Longitudinal pretest-posttest comparison group study. PLoS Med 2020; 17:e1003244. [PMID: 32780772 PMCID: PMC7418951 DOI: 10.1371/journal.pmed.1003244] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 07/02/2020] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND Social distancing measures to address the US coronavirus disease 2019 (COVID-19) epidemic may have notable health and social impacts. METHODS AND FINDINGS We conducted a longitudinal pretest-posttest comparison group study to estimate the change in COVID-19 case growth before versus after implementation of statewide social distancing measures in the US. The primary exposure was time before (14 days prior to, and through 3 days after) versus after (beginning 4 days after, to up to 21 days after) implementation of the first statewide social distancing measures. Statewide restrictions on internal movement were examined as a secondary exposure. The primary outcome was the COVID-19 case growth rate. The secondary outcome was the COVID-19-attributed mortality growth rate. All states initiated social distancing measures between March 10 and March 25, 2020. The mean daily COVID-19 case growth rate decreased beginning 4 days after implementation of the first statewide social distancing measures, by 0.9% per day (95% CI -1.4% to -0.4%; P < 0.001). We did not observe a statistically significant difference in the mean daily case growth rate before versus after implementation of statewide restrictions on internal movement (0.1% per day; 95% CI -0.04% to 0.3%; P = 0.14), but there is substantial difficulty in disentangling the unique associations with statewide restrictions on internal movement from the unique associations with the first social distancing measures. Beginning 7 days after social distancing, the COVID-19-attributed mortality growth rate decreased by 2.0% per day (95% CI -3.0% to -0.9%; P < 0.001). Our analysis is susceptible to potential bias resulting from the aggregate nature of the ecological data, potential confounding by contemporaneous changes (e.g., increases in testing), and potential underestimation of social distancing due to spillover effects from neighboring states. CONCLUSIONS Statewide social distancing measures were associated with a decrease in the COVID-19 case growth rate that was statistically significant. Statewide social distancing measures were also associated with a decrease in the COVID-19-attributed mortality growth rate beginning 7 days after implementation, although this decrease was no longer statistically significant by 10 days.
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Affiliation(s)
- Mark J. Siedner
- Massachusetts General Hospital, Boston, Massachusetts, United States of America
- Harvard Medical School, Boston, Massachusetts, United States of America
- Africa Health Research Institute, KwaZulu-Natal, South Africa
| | - Guy Harling
- Africa Health Research Institute, KwaZulu-Natal, South Africa
- University College London, London, United Kingdom
- MRC/Wits Agincourt Unit, Rural Public Health and Health Transitions Research Unit, University of the Witwatersrand, Johannesburg, South Africa
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, United States of America
- Harvard Center for Population and Development Studies, Cambridge, Massachusetts, United States of America
| | - Zahra Reynolds
- Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Rebecca F. Gilbert
- Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Sebastien Haneuse
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, United States of America
| | - Atheendar S. Venkataramani
- Department of Medical Ethics and Health Policy, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
- Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Alexander C. Tsai
- Massachusetts General Hospital, Boston, Massachusetts, United States of America
- Harvard Medical School, Boston, Massachusetts, United States of America
- Harvard Center for Population and Development Studies, Cambridge, Massachusetts, United States of America
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Roh JW, Bessler DA, Gilbert RF. Traffic fatalities, Peltzman's model, and directed graphs. Accid Anal Prev 1999; 31:55-61. [PMID: 10084618 DOI: 10.1016/s0001-4575(98)00044-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
We show how statistical methods based on directed graphs may be useful in modeling traffic fatalities by comparing models specified using directed graphs to a model originally developed by Peltzman. The comparison uses Peltzman's original data, as well as up-dated data (and coefficients) through 1993. Out-of-sample forecasts of traffic fatalities from Peltzman's model are compared with those from a model constructed using directed graphs over data for the more recent period. The directed graphs model outperforms Peltzman's model in root mean squared forecast error.
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Affiliation(s)
- J W Roh
- Department of Economics, Texas A and M University, College Station 77843, USA
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Abstract
A case of adenocarcinoma involving a müllerian duct cyst is presented. The presentation, treatment, and pathological and radiological appearance are discussed. The embryology and history of this entity are reviewed.
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Affiliation(s)
- R F Gilbert
- Department of Urology, Long Beach Memorial Medical Center, California
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Abstract
Ten patients with metastatic carcinoid tumors in the liver showed elevated 5-hydroxytryptamine and substance P levels in plasma samples taken from hepatic or peripheral veins. Chromatographic characterization of the substance P-immunoreactivity showed that by gel permeation and high pressure liquid chromatography the substance P-immunoreactivity was indistinguishable from synthetic undecapeptide substance P. The results suggest that substance P, in addition to the 5-hydroxyinoles, may serve as a circulatory marker for some forms of carcinoid tumors.
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Gilbert RF, Emson PC, Hunt SP, Bennett GW, Marsden CA, Sandberg BE, Steinbusch HW, Verhofstad AA. The effects of monoamine neurotoxins on peptides in the rat spinal cord. Neuroscience 1982; 7:69-87. [PMID: 6176903 DOI: 10.1016/0306-4522(82)90154-3] [Citation(s) in RCA: 212] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The coexistence of two neuronally-localised peptides, substance P and thyrotropin-releasing hormone (TRH), in descending serotoninergic nerve fibres to the spinal cord was investigated using immunocytochemical and biochemical methods. Substance P-like material in the spinal cord was shown to be identical to the undecapeptide substance P by the criteria of gel filtration, high performance liquid chromatography and behaviour in substance P specific radioimmunoassays. Immunocytochemical staining for 5-hydroxytryptamine, substance P, and TRH showed that all three substances had a similar distribution in nerve fibres and terminals in the ventral and lateral grey matter of the spinal cord. After treatment with the serotonin neurotoxin 5,7-dihydroxytryptamine, neuronal elements containing 5-hydroxytryptamine, substance P and TRH degenerated and disappeared from these parts of the spinal cord in parallel with one another. Biochemical measurements of 5-hydroxytryptamine, substance P and TRH in the spinal cord after treatment with 5,7-dihydroxytryptamine confirmed that these three substances were all depleted from the ventral horn and, in addition, showed that there was a small depletion of substance P from the dorsal horn. Two other neuropeptides, somatostatin and methionine-enkephalin were not depleted from the spinal cord by treatment with 5,7-dihydroxytryptamine nor was substance P in other parts of the brain. Substance P in the spinal cord was unaffected by 6-hydroxydopamine, a drug known to destroy catecholamine-containing neurones. These results are consistent with coexistence of substance P and TRH together with 5-hydroxytryptamine in the descending axons and terminals of bulbospinal neurones.
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Marsden CA, Bennett GW, Irons J, Gilbert RF, Emson PC. Localization and release of 5-hydroxytryptamine thyrotrophin releasing hormone and substance P in rat ventral spinal cord. Comp Biochem Physiol C Comp Pharmacol 1982; 72:263-70. [PMID: 6183051 DOI: 10.1016/0306-4492(82)90093-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
1. The highest spinal cord levels of 5-hydroxytryptamine (5-HT) and thyrotrophin releasing hormone (TRH) were found in the ventral lumbar cord, in contrast to substance P which was found predominantly in the dorsal cord. 2. 5,6- and 5,7-dihydroxytryptamine, administered into the lateral ventricles reduced 5-HT in the dorsal and ventral spinal cord by up to 90%. 3. There was a parallel reduction in substance P and TRH in ventral spinal cord while methionine-enkephalin and somatostatin in ventral and dorsal cord increased. 4. Reserpine and tetrabenazine depleted 5-HT and partially depleted substance P and TRH in the ventral cord, but had no effect on either methionine-enkephalin or somatostatin. 5. The rates of loss and recovery, after reserpine and tetrabenazine, of 5-HT were different from those of the two peptides. 6. Endogenous 5-HT and TRH release from slices of lumbar cord was enhanced by high potassium. 7. p-Chloroamphetamine and fenfluramine increased 5-HT release but reduced or had no effect on TRH release. The effect of p-chloroamphetamine on TRH release was not dependent on either the presence of 5-HT or 5-HT receptor activity. 8. The results are discussed in terms of the possible co-existence, co-storage and release of 5-HT, substance P and TRH in descending bulbospinal neurones.
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Abstract
The ventral spinal cord content of several neuronally localised peptides was measured after treatment with a number of drugs which deplete spinal cord monoamines. Reserpine and tetrabenazine, but not p-chlorophenylalanine caused a partial depletion of ventral spinal cord substance P (SP) and thyrotropin-releasing hormone (TRH). Two other peptides, methionine-enkephalin and somatostatin were not depleted by any of the drugs. The rates of loss and recovery of SP and TRH after reserpine and tetrabenazine were different from that of 5-hydroxytryptamine (5-HT), though in the ventral spinal cord these two peptides probably coexist with 5-HT in the terminals of bulbospinal neurones. The results are discussed in relation to the possible costorage of SP and TRH with 5-HT in the same vesicles in nerve terminals in the ventral spinal cord.
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Abstract
The demonstration of depolarization-induced release of substance P, Met- and Leu-enkephalin, somatostatin, neurotensin, vasoactive intestinal polypeptide and cholecystokinin-like material from various regions of rat brain in vitro supports the hypothesis that these and other neuropeptides may act as neurotransmitters. In each case the stimulus-evoked release, but not the basal release, of peptide was dependent on the presence of calcium ions in the external medium. The stimulus-evoked release of substance P from nerve terminals in rat substantia nigra may be regulated by presynaptic gamma-aminobutyric acid (GABA) receptors. The possible existence of presynaptic opiate receptors on substance P-containing sensory nerve terminals may offer an explanation for the analgesic effects of opiates at spinal cord level, and for the existence of enkephalin neurons in substantia gelatinosa. Capsaicin releases substance P from spinal cord nerve terminals and may impair their function, while having no effect on substance P neurons in supraspinal regions. The possibility of cosecretion of peptide and amine products from the same cells is discussed.
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Abstract
A case of cecal infarction proximal to an obstructing fecaloma is presented. The patient's medical records revealed a 19-year history of the abuse of prescribed narcotic, sedative, psychotropic, and anticholinergic drugs. Gangrene in this case was caused by compression of intramural vessels secondary to a sustained increased in intracolonic pressure. The greatest effect of this increased pressure was found in the cecum, where wall tension and colonic distention were greatest. This report indicates that the colonic effects of chronic drug abuse have the potential for becoming a true surgical emergency.
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Abstract
Accumulations of the neuropeptides substance P (SP), somatostatin (ST), and vasoactive intestinal polypeptide (VIP) proximal to a crush in the cervical vagus nerve of the rat have been measured using sensitive radioimmunoassays. Each of the peptides was rapidly transport towards the peripheral terminals of vagal afferent fibres, with average rates of flow ranging from 0.8 to 2.7 mm h-1. In the rabbit vagus nerve, SP was transported with an average rate of 4 mm h-1, which is more than double the rate for this peptide in the rat. Double crush experiments in rabbit vagus nerves indicated that the rapidly transported proportion of the total content of SP in the nerve free was about 34%. From this, the rate of transport of SP in the rapidly transported pool in the rabbit vagus nerve can be calculated to be 12 mm h-1 (280 mm day-1). Since such double crush experiments were not possible in the rat, it is not clear whether the different average rates of transport of SP in the rat and the rabbit reflect real differences in the rate of rapid transport in the two species. In common with rapid axonal transport of other neurotransmitters, the transport of SP and ST in the rat vagus nerve was blocked by colchicine, a drug that disrupts microtubules.
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Emson PC, Gilbert RF, Loren I, Fahrenkrug J, Sundler F, Schaffalitzky de Muckadell OB. Development of vasoactive intestinal polypeptide (VIP) containing neurones in the rat brain. Brain Res 1979; 177:437-44. [PMID: 387178 DOI: 10.1016/0006-8993(79)90462-1] [Citation(s) in RCA: 96] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The development of VIP-containing neurones in the rat CNS and duodenum has been studied using a specific radioimmunoassay and immunohistochemistry. In the brain, VIP immunoreactivity appears entirely postnatally, while VIP in peripheral neurones in the duodenum was present before birth. The developmental changes observed in cerebral cortex appear to represent the maturation of a population of intrinsic cortical interneurones which contain VIP. These neurones develop entirely after birth. They are first seen in deep cortical layers, but later spread out into all cortical layers, particularly layers II--IV. Changes in the intensity of VIP cell body fluorescence can be correlated with changes in VIP content in the cortex measured by radioimmunoassay. Thus VIP forms a unique chemical marker for studying the maturation of a cortical neurone.
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Björklund AJ, Emson PC, Gilbert RF, Skagerberg G. Further evidence for the possible coexistence of 5-hydroxytryptamine and substance P in medullary raphe neurones of rat brain [proceedings]. Br J Pharmacol 1979; 66:112P-113P. [PMID: 454908 PMCID: PMC2043845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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Gilbert RF, Hanley MR, Iversen LL. [3H]-Quinuclidinyl benzilate binding to muscarinic receptors in rat brain: comparison of results from intact brain slices and homogenates. Br J Pharmacol 1979; 65:451-6. [PMID: 427318 PMCID: PMC1668646 DOI: 10.1111/j.1476-5381.1979.tb07850.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
1. The binding of [3H]-( +/- )-quinuclidinyl benzilate ([3H]-( +/- )-QNB) to muscarinic sites in rat brain slice and homogenate preparations was compared. 2. Evidence is presented in support of the view that only the (-)-enantiomer of QNB binds with high affinity to muscarinic sites. 3. The Kd value for [3H]-(-)-QNB binding in slices was eight times higher than that measured in homogenates. 4. Similarly, the potencies of various muscarinic ligands as inhibitors of [3H]-(-)-QNB binding were consistently lower in slices than in homogenates. 5. It is proposed that the results may reflect differences in the binding properties of muscarinic receptors in intact tissue slice and homogenate preparations.
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Abstract
A surgically treated case of a mesenchymal hamartoma, a rare, benign liver tumor of infants and occasionally children, is reported. The clinical picture is characterized by marked, usually rapid abdominal enlargement. If untreated, the tumor may compromise other organ systems, resulting in death. The treatment is surgical removal. The tumor is characterized by proliferation of collagenous connective tissue, immature mesenchyme, and multiple cysts or pseudocysts of varying sizes. The origin of the tumor has not yet been definitely determined. Ultrasonography combined with radionuclide scanning was useful in establishing a working, preoperative diagnosis.
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