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LaCourse SM, Wetzler EA, Aurelio MC, Escudero JN, Selke SS, Greninger AL, Goecker EA, Barnes SR, Arnould IS, Pérez-Osorio AC, Richardson BA, Kachikis A, Englund JA, Drake AL. Hybrid Immunity to Severe Acute Respiratory Syndrome Coronavirus 2 During Pregnancy Provides More Durable Infant Antibody Responses Compared to Natural Infection or Vaccination Alone. J Infect Dis 2024; 229:1241-1243. [PMID: 38285008 DOI: 10.1093/infdis/jiae046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 01/24/2024] [Indexed: 01/30/2024] Open
Affiliation(s)
- Sylvia M LaCourse
- Division of Allergy and Infectious Diseases, Department of Medicine
- Department of Global Health
- Department of Epidemiology
| | | | | | | | | | | | | | | | | | | | | | | | - Janet A Englund
- Department of Pediatrics, University of Washington
- Seattle Children's Research Institute, Seattle Children's Hospital, Seattle, Washington
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LaCourse SM, Wetzler EA, Aurelio MC, Escudero JN, Selke SS, Greninger AL, Goecker EA, Barnes SR, Arnould IS, Pérez-Osorio AC, Richardson BA, Kachikis A, Englund JA, Drake AL. Hybrid immunity to SARS-CoV-2 during pregnancy provides more durable infant antibody responses compared to natural infection alone. J Infect Dis 2023:jiad592. [PMID: 38128542 DOI: 10.1093/infdis/jiad592] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 12/07/2023] [Accepted: 12/19/2023] [Indexed: 12/23/2023] Open
Abstract
BACKGROUND Hybrid immunity (infection plus vaccination) may increase maternally-derived SARS-CoV-2 antibody responses and durability vs. infection alone. METHODS Prospective cohort of pregnant participants with prior SARS-CoV-2 infection (anti-nucleocapsid IgG+, RT-PCR + or antigen+) and their infants had blood collected in pregnancy, delivery/birth, and postpartum tested for anti-spike (anti-S) IgG and neutralizing antibodies (neutAb). RESULTS Among 107 participants at enrollment, 40% were unvaccinated and 60% were vaccinated (received ≥1 dose); 102 had previous SARS-CoV-2 infection in pregnancy (median 19 weeks gestation); 5 were diagnosed just prior to prior to pregnancy (median 8 weeks). At delivery, fewer unvaccinated participants (87% anti-S IgG+, 86% neutAb) and their infants (86% anti-S IgG+, 75% neutAb) had anti-S IgG + or neutAb compared to vaccinated participants and their infants (100%, p ≤ 0.01 for all). By 3-6 months postpartum, 50% of infants of unvaccinated participants were anti-S IgG + and 14% had neutAb, vs. 100% among infants of vaccinated participants (all p < 0.01), with lower median antibody responses (anti-S IgG log10 1.95 vs. 3.84 AU/ml, p < 0.01; neutAb log10 1:1.34 vs. 1:3.20, p = 0.11). CONCLUSIONS In pregnant people with prior SARS-CoV-2, vaccination before delivery provided more durable maternally-derived antibody responses than infection alone in infants through 6 months.
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Affiliation(s)
- Sylvia M LaCourse
- Department of Medicine, Division of Allergy and Infectious Diseases, University of Washington, Seattle, WA, USA
- Department of Global Health, University of Washington, Seattle, WA, USA
- Department of Epidemiology, University of Washington, Seattle, WA, USA
| | - Erica A Wetzler
- Department of Global Health, University of Washington, Seattle, WA, USA
| | - Morgan C Aurelio
- Department of Global Health, University of Washington, Seattle, WA, USA
| | - Jaclyn N Escudero
- Department of Global Health, University of Washington, Seattle, WA, USA
| | - Stacy S Selke
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA, USA
| | - Alexander L Greninger
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA, USA
| | - Erin A Goecker
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA, USA
| | - Sarina R Barnes
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA, USA
| | - Isabel S Arnould
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA, USA
| | - Ailyn C Pérez-Osorio
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA, USA
| | - Barbra A Richardson
- Department of Global Health, University of Washington, Seattle, WA, USA
- Department of Biostatistics, University of Washington, Seattle, WA, USA
| | - Alisa Kachikis
- Department of Obstetrics and Gynecology, University of Washington, Seattle, WA, USA
| | - Janet A Englund
- Department of Pediatrics, University of Washington, Seattle, WA, USA
- Seattle Children's Research Institute, Seattle Children's Hospital, Seattle, WA, USA
| | - Alison L Drake
- Department of Global Health, University of Washington, Seattle, WA, USA
- Department of Epidemiology, University of Washington, Seattle, WA, USA
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Drake AL, Escudero JN, Aurelio MC, Wetzler EA, Ellington SR, Zapata LB, Galang RR, Snead MC, Yamamoto K, Salerno CC, Richardson BA, Greninger AL, Kachikis AB, Englund JA, LaCourse SM. Severe acute respiratory syndrome coronavirus 2 seroprevalence and longitudinal antibody response following natural infection in pregnancy: A prospective cohort study. Womens Health (Lond) 2023; 19:17455057231190955. [PMID: 37615311 PMCID: PMC10467162 DOI: 10.1177/17455057231190955] [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] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 07/10/2023] [Accepted: 07/13/2023] [Indexed: 08/25/2023]
Abstract
BACKGROUND Antenatal care provides unique opportunities to assess severe acute respiratory syndrome coronavirus 2 seroprevalence and antibody response duration after natural infection detected during pregnancy; transplacental antibody transfer may inform peripartum and neonatal protection. We estimated seroprevalence and durability of antibodies from natural infection (anti-nucleocapsid immunoglobulin G) among pregnant people, and evaluated transplacental transfer efficiency. OBJECTIVE AND DESIGN We conducted a cross-sectional study to measure severe acute respiratory syndrome coronavirus 2 seroprevalence, and a prospective cohort study to longitudinally measure anti-nucleocapsid immunoglobulin G responses and transplacental transfer of maternally derived anti-nucleocapsid antibodies. METHODS We screened pregnant people for the seroprevalence study between 9 December 2020 and 19 June 2021 for anti-nucleocapsid immunoglobulin G in Seattle, Washington. We enrolled anti-nucleocapsid immunoglobulin G positive people from the seroprevalence study or identified through medical records with positive reverse transcription polymerase chain reaction or antigen positive results in a prospective cohort between 9 December 2020 and 9 August 2022. RESULTS In the cross-sectional study (N = 1284), 5% (N = 65) tested severe acute respiratory syndrome coronavirus 2 anti-nucleocapsid immunoglobulin G positive, including 39 (60%) without prior positive reverse transcription polymerase chain reaction results and 42 (65%) without symptoms. In the prospective cohort study (N = 107 total; N = 65 from the seroprevalence study), 86 (N = 80%) had anti-nucleocapsid immunoglobulin G positive results during pregnancy. Among 63 participants with delivery samples and prior anti-nucleocapsid positive results, 29 (46%) were anti-nucleocapsid immunoglobulin G negative by delivery. Of 34 remaining anti-nucleocapsid immunoglobulin G positive at delivery with paired cord blood, 19 (56%) had efficient transplacental anti-nucleocapsid immunoglobulin G antibody transfer. Median time from first anti-nucleocapsid immunoglobulin G positive to below positive antibody threshold was 19 weeks and did not differ by prior positive reverse transcription polymerase chain reaction status. CONCLUSIONS Maternally derived severe acute respiratory syndrome coronavirus 2 antibodies to natural infection may wane before delivery. Vaccines are recommended for pregnant persons to reduce severe illness and confer protection to infants.
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Affiliation(s)
- Alison L Drake
- Department of Global Health, University of Washington, Seattle, WA, USA
- Department of Epidemiology, University of Washington, Seattle, WA, USA
| | - Jaclyn N Escudero
- Department of Global Health, University of Washington, Seattle, WA, USA
| | - Morgan C Aurelio
- Department of Global Health, University of Washington, Seattle, WA, USA
| | - Erica A Wetzler
- Department of Global Health, University of Washington, Seattle, WA, USA
| | - Sascha R Ellington
- Division of Reproductive Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Lauren B Zapata
- Division of Reproductive Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Romeo R Galang
- Division of Reproductive Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Margaret C Snead
- Division of Reproductive Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Krissy Yamamoto
- Department of Obstetrics & Gynecology, University of Washington, Seattle, WA, USA
| | - Carol C Salerno
- Department of Obstetrics & Gynecology, University of Washington, Seattle, WA, USA
| | - Barbra A Richardson
- Department of Global Health, University of Washington, Seattle, WA, USA
- Department of Biostatistics, University of Washington, Seattle, WA, USA
| | - Alexander L Greninger
- Department of Laboratory Medicine & Pathology, University of Washington, Seattle, WA, USA
| | - Alisa B Kachikis
- Department of Obstetrics & Gynecology, University of Washington, Seattle, WA, USA
| | - Janet A Englund
- Department of Pediatrics, University of Washington, Seattle, WA, USA
- Seattle Children’s Research Institute, Seattle Children’s Hospital, Seattle, WA, USA
| | - Sylvia M LaCourse
- Department of Global Health, University of Washington, Seattle, WA, USA
- Department of Epidemiology, University of Washington, Seattle, WA, USA
- Division of Allergy and Infectious Diseases, Department of Medicine, University of Washington, Seattle, WA, USA
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Wetzler EA, Park C, Arroz JAH, Chande M, Mussambala F, Candrinho B. Impact of mass distribution of insecticide-treated nets in Mozambique, 2012 to 2025: Estimates of child lives saved using the Lives Saved Tool. PLOS Glob Public Health 2022; 2:e0000248. [PMID: 36962318 PMCID: PMC10022185 DOI: 10.1371/journal.pgph.0000248] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 03/22/2022] [Indexed: 11/19/2022]
Abstract
Malaria was the leading cause of post-neonatal deaths in Mozambique in 2017. The use of insecticide treated nets (ITNs) is recognized as one of the most effective ways to reduce malaria mortality in children. No previous analyses have estimated changes in mortality attributable to the scale-up of ITNs, accounting for provincial differences in mortality rates and coverage of health interventions. Based upon annual provincial ownership coverage of ITNs, the Lives Saved Tool (LiST), a multi-cause mathematical model, estimated under-5 lives saved attributable to increased household ITN coverage in 10 provinces of Mozambique between 2012 and 2018, and projected lives saved from 2019 to 2025 if 2018 coverage levels are sustained. An estimated 14,040 under-5 child deaths were averted between 2012 and 2018. If 2018 coverage levels are maintained until 2025, an additional 33,277 child deaths could be avoided. If coverage reaches at least 85% in all ten provinces by 2022, then a projected 36,063 child lives can be saved. From 2012 to 2018, the estimated number of lives saved was highest in Zambezia and Tete provinces. Increases in ITN coverage can save a substantial number of child lives in Mozambique. Without continued investment, thousands of avoidable child deaths will occur.
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Affiliation(s)
- Erica A Wetzler
- World Vision United States, Federal Way, Washington, United States of America
| | - Chulwoo Park
- Department of Public Health and Recreation, San José State University, San Jose, California, United States of America
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