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S. Schrag · SciRah

Researcher profile · Semantic Scholar

S. Schrag

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S. Schrag — researcher profile on SciRah

h-index: 88
Works: 222
Citations: 29K

Most-cited papers

Association Between 3 Doses of mRNA COVID-19 Vaccine and Symptomatic Infection Caused by the SARS-CoV-2 Omicron and Delta Variants.
Emma K. Accorsi, Amadea Britton, K. Fleming-Dutra, Zachary R. Smith +5 more
2022Journal of the American Medical Association (JAMA)601 citations Open access
Semantic Scholar
Clinical severity of, and effectiveness of mRNA vaccines against, covid-19 from omicron, delta, and alpha SARS-CoV-2 variants in the United States: prospective observational study
A. Lauring, Mark W. Tenforde, J. Chappell, M. Gaglani +55 more
2022British medical journal555 citations Open access
Semantic Scholar
Maternal Colonization With Group B Streptococcus and Serotype Distribution Worldwide: Systematic Review and Meta-analyses
N. Russell, A. Seale, M. O'Driscoll, Catherine O’Sullivan +26 more
2017Clinical Infectious Diseases478 citations Open access
Semantic Scholar
Estimates of the Burden of Group B Streptococcal Disease Worldwide for Pregnant Women, Stillbirths, and Children
A. Seale, Fiorella Bianchi-Jassir, N. Russell, M. Kohli-Lynch +19 more
2017Clinical Infectious Diseases464 citations Open access
Semantic Scholar
Infant Group B Streptococcal Disease Incidence and Serotypes Worldwide: Systematic Review and Meta-analyses
L. Madrid, A. Seale, M. Kohli-Lynch, K. Edmond +29 more
2017Clinical Infectious Diseases414 citations Open access
Semantic Scholar
Waning 2-Dose and 3-Dose Effectiveness of mRNA Vaccines Against COVID-19–Associated Emergency Department and Urgent Care Encounters and Hospitalizations Among Adults During Periods of Delta and Omicron Variant Predominance — VISION Network, 10 States, August 2021–January 2022
J. Ferdinands, S. Rao, B. Dixon, Patrick K. Mitchell +43 more
2022MMWR. Morbidity and mortality weekly report412 citations Open access
Semantic Scholar
Effectiveness of Covid-19 Vaccines in Ambulatory and Inpatient Care Settings
M. Thompson, E. Stenehjem, S. Grannis, Sarah W. Ball +40 more
2021New England Journal of Medicine406 citations Open access
Semantic Scholar
Effectiveness of a Third Dose of mRNA Vaccines Against COVID-19–Associated Emergency Department and Urgent Care Encounters and Hospitalizations Among Adults During Periods of Delta and Omicron Variant Predominance — VISION Network, 10 States, August 2021–January 2022
M. Thompson, Karthik Natarajan, Stephanie A. Irving, E. Rowley +43 more
2022MMWR. Morbidity and mortality weekly report398 citations Open access
Semantic Scholar
Global burden of respiratory infections associated with seasonal influenza in children under 5 years in 2018: a systematic review and modelling study
Xin Wang, You Li, K. O'Brien, S. Madhi +144 more
2020Lancet Global Health387 citations Open access
Semantic Scholar
Early-Onset Neonatal Sepsis 2015 to 2017, the Rise of Escherichia coli, and the Need for Novel Prevention Strategies.
B. Stoll, K. Puopolo, N. Hansen, P. Sánchez +20 more
2020JAMA pediatrics370 citations Open access
Semantic Scholar
Mycoplasma pneumoniae Among Children Hospitalized With Community-acquired Pneumonia
P. Kutty, Seema Jain, T. Taylor, A. Bramley +10 more
2018Clinical Infectious Diseases356 citations Open access
Semantic Scholar
Epidemiology of Invasive Early-Onset and Late-Onset Group B Streptococcal Disease in the United States, 2006 to 2015
S. Nanduri, S. Petit, C. Smelser, M. Apostol +15 more
2019JAMA pediatrics339 citations Open access
Semantic Scholar
Effectiveness of Pfizer-BioNTech and Moderna Vaccines in Preventing SARS-CoV-2 Infection Among Nursing Home Residents Before and During Widespread Circulation of the SARS-CoV-2 B.1.617.2 (Delta) Variant — National Healthcare Safety Network, March 1–August 1, 2021
S. Nanduri, T. Pilishvili, G. Derado, M. Soe +14 more
2021MMWR. Morbidity and mortality weekly report293 citations Open access
Semantic Scholar
Effectiveness of mRNA Covid-19 Vaccine among U.S. Health Care Personnel
T. Pilishvili, R. Gierke, K. Fleming-Dutra, J. Farrar +41 more
2021New England Journal of Medicine243 citations Open access
Semantic Scholar
Sustained Effectiveness of Pfizer-BioNTech and Moderna Vaccines Against COVID-19 Associated Hospitalizations Among Adults — United States, March–July 2021
Mark W. Tenforde, W. Self, Eric A. Naioti, A. Ginde +151 more
2021MMWR. Morbidity and mortality weekly report214 citations Open access
Semantic Scholar
Neurodevelopmental Impairment in Children After Group B Streptococcal Disease Worldwide: Systematic Review and Meta-analyses
M. Kohli-Lynch, N. Russell, A. Seale, Z. Dangor +24 more
2017Clinical Infectious Diseases198 citations Open access
Semantic Scholar
Epidemiology of Invasive Group B Streptococcal Infections Among Nonpregnant Adults in the United States, 2008-2016
L. F. Francois Watkins, L. McGee, S. Schrag, B. Beall +14 more
2019JAMA Internal Medicine197 citations Open access
Semantic Scholar
Preterm Birth Associated With Group B Streptococcus Maternal Colonization Worldwide: Systematic Review and Meta-analyses
Fiorella Bianchi-Jassir, A. Seale, M. Kohli-Lynch, J. Lawn +13 more
2017Clinical Infectious Diseases195 citations Open access
Semantic Scholar
Interim Estimates of Vaccine Effectiveness of Pfizer-BioNTech and Moderna COVID-19 Vaccines Among Health Care Personnel — 33 U.S. Sites, January–March 2021
T. Pilishvili, K. Fleming-Dutra, J. Farrar, R. Gierke +77 more
2021MMWR. Morbidity and mortality weekly report191 citations Open access
Semantic Scholar
Intrapartum Antibiotic Chemoprophylaxis Policies for the Prevention of Group B Streptococcal Disease Worldwide: Systematic Review
K. Le Doare, M. O'Driscoll, K. Turner, F. Seedat +36 more
2017Clinical Infectious Diseases191 citations Open access
Semantic Scholar
Causes and incidence of community-acquired serious infections among young children in south Asia (ANISA): an observational cohort study
S. Saha, S. Schrag, S. El Arifeen, L. Mullany +51 more
2018The Lancet182 citations Open access
Semantic Scholar
Risk of Early-Onset Neonatal Group B Streptococcal Disease With Maternal Colonization Worldwide: Systematic Review and Meta-analyses
N. Russell, A. Seale, Catherine O’Sullivan, K. Le Doare +13 more
2017Clinical Infectious Diseases182 citations Open access
Semantic Scholar
Effectiveness of 2-Dose Vaccination with mRNA COVID-19 Vaccines Against COVID-19–Associated Hospitalizations Among Immunocompromised Adults — Nine States, January–September 2021
P. Embí, Matthew E. Levy, A. Naleway, P. Patel +50 more
2021MMWR. Morbidity and mortality weekly report178 citations Open access
Semantic Scholar
Effectiveness of COVID-19 Pfizer-BioNTech BNT162b2 mRNA Vaccination in Preventing COVID-19–Associated Emergency Department and Urgent Care Encounters and Hospitalizations Among Nonimmunocompromised Children and Adolescents Aged 5–17 Years — VISION Network, 10 States, April 2021–January 2022
N. Klein, M. Stockwell, M. Demarco, M. Gaglani +43 more
2022MMWR. Morbidity and mortality weekly report156 citations Open access
Semantic Scholar
Effectiveness of COVID-19 Vaccines in Preventing Hospitalization Among Adults Aged ≥65 Years — COVID-NET, 13 States, February–April 2021
Heidi L Moline, M. Whitaker, Li Deng, Julia C. Rhodes +37 more
2021MMWR. Morbidity and mortality weekly report152 citations Open access
Semantic Scholar
Short-read whole genome sequencing for determination of antimicrobial resistance mechanisms and capsular serotypes of current invasive Streptococcus agalactiae recovered in the USA.
B. Metcalf, S. Chochua, R. Gertz, P. Hawkins +62 more
2017Clinical Microbiology and Infection151 citations Open access
Semantic Scholar
Effectiveness of Bivalent mRNA Vaccines in Preventing Symptomatic SARS-CoV-2 Infection — Increasing Community Access to Testing Program, United States, September–November 2022
R. Link-Gelles, A. Ciesla, K. Fleming-Dutra, Zachary R. Smith +9 more
2022MMWR. Morbidity and mortality weekly report148 citations Open access
Semantic Scholar
Stillbirth With Group B Streptococcus Disease Worldwide: Systematic Review and Meta-analyses
A. Seale, H. Blencowe, Fiorella Bianchi-Jassir, N. Embleton +19 more
2017Clinical Infectious Diseases142 citations Open access
Semantic Scholar
Effectiveness of the Pfizer-BioNTech COVID-19 Vaccine Among Residents of Two Skilled Nursing Facilities Experiencing COVID-19 Outbreaks — Connecticut, December 2020–February 2021
Amadea Britton, K. Jacobs-Slifka, C. Edens, S. Nanduri +13 more
2021MMWR. Morbidity and mortality weekly report140 citations Open access
Semantic Scholar
Maternal Disease With Group B Streptococcus and Serotype Distribution Worldwide: Systematic Review and Meta-analyses
J. Hall, N. Adams, L. Bartlett, A. Seale +15 more
2017Clinical Infectious Diseases133 citations Open access
Semantic Scholar
Association of Prior BNT162b2 COVID-19 Vaccination With Symptomatic SARS-CoV-2 Infection in Children and Adolescents During Omicron Predominance.
K. Fleming-Dutra, Amadea Britton, N. Shang, G. Derado +6 more
2022Journal of the American Medical Association (JAMA)131 citations Open access
Semantic Scholar
Effectiveness of SARS-CoV-2 mRNA Vaccines for Preventing Covid-19 Hospitalizations in the United States
Mark W. Tenforde, Manish M. Patel, A. Ginde, David J. Douin +54 more
2021medRxiv131 citations Open access
Semantic Scholar
Evaluation of post-introduction COVID-19 vaccine effectiveness: Summary of interim guidance of the World Health Organization
Minal K. Patel, I. Bergeri, J. Bresee, B. Cowling +23 more
2021Vaccine131 citations Open access
Semantic Scholar
Effectiveness of COVID-19 mRNA Vaccines Against COVID-19–Associated Hospitalization — Five Veterans Affairs Medical Centers, United States, February 1–August 6, 2021
Kristina L. Bajema, Rebecca Dahl, M. Prill, E. Meites +61 more
2021MMWR. Morbidity and mortality weekly report120 citations Open access
Semantic Scholar
Maternal colonisation with Streptococcus agalactiae, and associated stillbirth and neonatal disease in coastal Kenya
A. Seale, A. Koech, A. Sheppard, H. Barsosio +29 more
2016Nature Microbiology110 citations Open access
Semantic Scholar
Group B Streptococcal Disease Worldwide for Pregnant Women, Stillbirths, and Children: Why, What, and How to Undertake Estimates?
J. Lawn, Fiorella Bianchi-Jassir, N. Russell, M. Kohli-Lynch +17 more
2017Clinical Infectious Diseases109 citations Open access
Semantic Scholar
Effectiveness of SARS-CoV-2 mRNA Vaccines for Preventing Covid-19 Hospitalizations in the United States
Mark W. Tenforde, Manish M. Patel, A. Ginde, David J. Douin +53 more
2021Clinical Infectious Diseases108 citations Open access
Semantic Scholar
Multistate, population-based distributions of candidate vaccine targets, clonal complexes, and resistance features of invasive Group B Streptococci within the US: 2015–2017
L. McGee, S. Chochua, Zhong-Ya Li, S. Mathis +13 more
2020Clinical Infectious Diseases93 citations Open access
Semantic Scholar
Laboratory-Confirmed COVID-19 Among Adults Hospitalized with COVID-19–Like Illness with Infection-Induced or mRNA Vaccine-Induced SARS-CoV-2 Immunity — Nine States, January–September 2021
C. Bozio, S. Grannis, A. Naleway, Toan C. Ong +49 more
2021MMWR. Morbidity and mortality weekly report89 citations Open access
Semantic Scholar
Mortality, neurodevelopmental impairments, and economic outcomes after invasive group B streptococcal disease in early infancy in Denmark and the Netherlands: a national matched cohort study
E. Horváth-Puhó, M. V. van Kassel, B. Gonçalves, B. de Gier +12 more
2021The Lancet Child & Adolescent Health88 citations Open access
Semantic Scholar
Estimating the early impact of the US COVID-19 vaccination programme on COVID-19 cases, emergency department visits, hospital admissions, and deaths among adults aged 65 years and older: an ecological analysis of national surveillance data
L. McNamara, R. Wiegand, R. Burke, Andrea J. Sharma +18 more
2021The Lancet81 citations Open access
Semantic Scholar
Group B Streptococcus vaccine development: present status and future considerations, with emphasis on perspectives for low and middle income countries
Miwako Kobayashi, J. Vekemans, C. Baker, A. Ratner +2 more
2016F1000Research81 citations Open access
Semantic Scholar
Identifying and alleviating bias due to differential depletion of susceptible people in post-marketing evaluations of COVID-19 vaccines
R. Kahn, S. Schrag, J. Verani, M. Lipsitch
2021medRxiv77 citations Open access
Semantic Scholar
The Sierra Leone Trial to Introduce a Vaccine Against Ebola: An Evaluation of rVSV[INCREMENT]G-ZEBOV-GP Vaccine Tolerability and Safety During the West Africa Ebola Outbreak
M. Samai, J. Seward, S. Goldstein, B. Mahon +31 more
2018Journal of Infectious Diseases71 citations Open access
Semantic Scholar
Comparative Effectiveness and Antibody Responses to Moderna and Pfizer-BioNTech COVID-19 Vaccines among Hospitalized Veterans — Five Veterans Affairs Medical Centers, United States, February 1–September 30, 2021
Kristina L. Bajema, Rebecca Dahl, Steve L. Evener, M. Prill +65 more
2021MMWR. Morbidity and mortality weekly report68 citations Open access
Semantic Scholar
Neonatal Encephalopathy With Group B Streptococcal Disease Worldwide: Systematic Review, Investigator Group Datasets, and Meta-analysis
C. Tann, K. Martinello, S. Sadoo, J. Lawn +43 more
2017Clinical Infectious Diseases67 citations Open access
Semantic Scholar
Implementing an Ebola Vaccine Study - Sierra Leone.
Marc-Alain Widdowson, S. Schrag, R. Carter, Wendy Carr +22 more
2016MMWR Supplements67 citations Open access
Semantic Scholar
Maternal immunization against Group B streptococcus: World Health Organization research and development technological roadmap and preferred product characteristics
J. Vekemans, V. Moorthy, M. Friede, M. Alderson +8 more
2018Vaccine65 citations Open access
Semantic Scholar
Association of COVID-19 Vaccination With Symptomatic SARS-CoV-2 Infection by Time Since Vaccination and Delta Variant Predominance.
Amadea Britton, K. Fleming-Dutra, N. Shang, Zachary R. Smith +7 more
2022Journal of the American Medical Association (JAMA)64 citations Open access
Semantic Scholar
Estimation of COVID-19 mRNA Vaccine Effectiveness Against Medically Attended COVID-19 in Pregnancy During Periods of Delta and Omicron Variant Predominance in the United States
S. Schrag, J. Verani, B. Dixon, Jessica M Page +32 more
2022JAMA Network Open59 citations Open access
Semantic Scholar

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