Open Access Helper

OpenAlex Citation Counts

OpenAlex Citations Logo

OpenAlex is a bibliographic catalogue of scientific papers, authors and institutions accessible in open access mode, named after the Library of Alexandria. It's citation coverage is excellent and I hope you will find utility in this listing of citing articles!

If you click the article title, you'll navigate to the article, as listed in CrossRef. If you click the Open Access links, you'll navigate to the "best Open Access location". Clicking the citation count will open this listing for that article. Lastly at the bottom of the page, you'll find basic pagination options.

Requested Article:

Theoretical Framework for Retrospective Studies of the Effectiveness of SARS-CoV-2 Vaccines
Joseph A. Lewnard, Manish M. Patel, Nicholas P. Jewell, et al.
Epidemiology (2021) Vol. 32, Iss. 4, pp. 508-517
Open Access | Times Cited: 100

Showing 26-50 of 100 citing articles:

Vaccine Effectiveness Studies in the Field
Stephen Evans, Nicholas P. Jewell
New England Journal of Medicine (2021) Vol. 385, Iss. 7, pp. 650-651
Open Access | Times Cited: 69
Product-specific COVID-19 vaccine effectiveness against secondary infection in close contacts, Navarre, Spain, April to August 2021
Iván Martínez‐Baz, Camino Trobajo‐Sanmartín, Ana Miqueleiz, et al.
Eurosurveillance (2021) Vol. 26, Iss. 39
Open Access | Times Cited: 69
Effectiveness of CoronaVac among healthcare workers in the setting of high SARS-CoV-2 Gamma variant transmission in Manaus, Brazil: A test-negative case-control study
Matt D. T. Hitchings, Otávio T. Ranzani, Mario Torres, et al.
medRxiv (Cold Spring Harbor Laboratory) (2021)
Open Access | Times Cited: 60
Prevention of Coronavirus Disease 2019 (COVID-19) by mRNA-Based Vaccines Within the General Population of California
Kristin L. Andrejko, Jake M. Pry, Jennifer F. Myers, et al.
Clinical Infectious Diseases (2021) Vol. 74, Iss. 8, pp. 1382-1389
Open Access | Times Cited: 57
Effectiveness of mRNA-1273 against SARS-CoV-2 omicron and delta variants
Hung Fu Tseng, Bradley K. Ackerson, Yi Luo, et al.
medRxiv (Cold Spring Harbor Laboratory) (2022)
Open Access | Times Cited: 57
Waning effectiveness of BNT162b2 and ChAdOx1 covid-19 vaccines over six months since second dose: OpenSAFELY cohort study using linked electronic health records
Elsie Horne, William Hulme, Ruth H. Keogh, et al.
BMJ (2022), pp. e071249-e071249
Open Access | Times Cited: 54
BNT162b2 mRNA Vaccination Against Coronavirus Disease 2019 is Associated With a Decreased Likelihood of Multisystem Inflammatory Syndrome in Children Aged 5–18 Years—United States, July 2021 – April 2022
Laura D. Zambrano, Margaret M. Newhams, Samantha M. Olson, et al.
Clinical Infectious Diseases (2022) Vol. 76, Iss. 3, pp. e90-e100
Open Access | Times Cited: 38
Factors influencing estimated effectiveness of COVID-19 vaccines in non-randomised studies
John P. A. Ioannidis
BMJ evidence-based medicine (2022) Vol. 27, Iss. 6, pp. 324-329
Open Access | Times Cited: 37
Association of SARS-CoV-2 BA.4/BA.5 Omicron lineages with immune escape and clinical outcome
Joseph A. Lewnard, Vennis Hong, Jeniffer S. Kim, et al.
Nature Communications (2023) Vol. 14, Iss. 1
Open Access | Times Cited: 30
Reported effectiveness of COVID-19 monovalent booster vaccines and hybrid immunity against mild and severe Omicron disease in adults: A systematic review and meta-regression analysis
Joshua Nealon, Yonatan M. Mefsin, Martina McMenamin, et al.
Vaccine X (2024) Vol. 17, pp. 100451-100451
Open Access | Times Cited: 8
Prevention of COVID-19 by mRNA-based vaccines within the general population of California
Kristin L. Andrejko, Jake M. Pry, Jennifer F. Myers, et al.
medRxiv (Cold Spring Harbor Laboratory) (2021)
Open Access | Times Cited: 46
Clinical Severity and mRNA Vaccine Effectiveness for Omicron, Delta, and Alpha SARS-CoV-2 Variants in the United States: A Prospective Observational Study
Adam S. Lauring, Mark W. Tenforde, James D. Chappell, et al.
medRxiv (Cold Spring Harbor Laboratory) (2022)
Open Access | Times Cited: 28
Assessment of Clinical Effectiveness of BNT162b2 COVID-19 Vaccine in US Adolescents
Carlos R. Oliveira, Linda M. Niccolai, Hassan Sheikha, et al.
JAMA Network Open (2022) Vol. 5, Iss. 3, pp. e220935-e220935
Open Access | Times Cited: 27
Vaccine effectiveness and duration of protection of COVID-19 mRNA vaccines against Delta and Omicron BA.1 symptomatic and severe COVID-19 outcomes in adults aged 50 years and over in France
Cynthia Tamandjou, Vincent Auvigne, Sophie Vaux, et al.
Vaccine (2023) Vol. 41, Iss. 13, pp. 2280-2288
Open Access | Times Cited: 16
Strength and durability of indirect protection against SARS-CoV-2 infection through vaccine and infection-acquired immunity
Sophia T. Tan, Isabel Rodríguez-Barraquer, Ada Kwan, et al.
Nature Communications (2025) Vol. 16, Iss. 1
Open Access
A Double Machine Learning Approach for the Evaluation of COVID‐19 Vaccine Effectiveness Under the Test‐Negative Design: Analysis of Québec Administrative Data
Cong Jiang, Denis Talbot, Sara Carazo, et al.
Statistics in Medicine (2025) Vol. 44, Iss. 5
Open Access
Challenges and enablers to establishing COVID-19 vaccine effectiveness studies in the World Health Organization Africa region: A mixed-methods evaluation of the African region monitoring vaccine effectiveness (AFRO-MoVE) network
Adam W. Crawley, Katherine Murphy, Ian D. Plumb, et al.
Vaccine (2025), pp. 126823-126823
Closed Access
Validation of neutralizing antibody titers for estimating vaccine effectiveness for the Omicron SARS-CoV-2 variant, BA.1
Billy J. Gardner, A. Marm Kilpatrick
medRxiv (Cold Spring Harbor Laboratory) (2021)
Open Access | Times Cited: 39
Effectiveness of nirmatrelvir-ritonavir against hospital admission or death: a cohort study in a large US healthcare system
Joseph A. Lewnard, John M. McLaughlin, Deborah E. Malden, et al.
medRxiv (Cold Spring Harbor Laboratory) (2022)
Open Access | Times Cited: 25
Use of Recently Vaccinated Individuals to Detect Bias in Test-Negative Case–Control Studies of COVID-19 Vaccine Effectiveness
Matt D. T. Hitchings, Joseph A. Lewnard, Natalie E. Dean, et al.
Epidemiology (2022) Vol. 33, Iss. 4, pp. 450-456
Open Access | Times Cited: 23
Current Challenges With the Use of Test-Negative Designs for Modeling COVID-19 Vaccination and Outcomes
Xu Shi, Kendrick Qijun Li, Bhramar Mukherjee
American Journal of Epidemiology (2022) Vol. 192, Iss. 3, pp. 328-333
Open Access | Times Cited: 23
Effectiveness of previous infection-induced and vaccine-induced protection against hospitalisation due to omicron BA subvariants in older adults: a test-negative, case-control study in Quebec, Canada
Sara Carazo, Danuta M. Skowronski, Marc Brisson, et al.
The Lancet Healthy Longevity (2023) Vol. 4, Iss. 8, pp. e409-e420
Open Access | Times Cited: 13
The need for a clinical case definition in test-negative design studies estimating vaccine effectiveness
Sheena G. Sullivan, Arseniy Khvorov, Xiaotong Huang, et al.
npj Vaccines (2023) Vol. 8, Iss. 1
Open Access | Times Cited: 13
Waning of 2-Dose BNT162b2 and mRNA-1273 Vaccine Effectiveness Against Symptomatic SARS-CoV-2 Infection Accounting for Depletion-of-Susceptibles Bias
Kristin L. Andrejko, Jake M. Pry, Jennifer F. Myers, et al.
American Journal of Epidemiology (2023) Vol. 192, Iss. 6, pp. 895-907
Open Access | Times Cited: 12
Increased vaccine sensitivity of an emerging SARS-CoV-2 variant
Joseph A. Lewnard, Vennis Hong, Jeniffer S. Kim, et al.
Nature Communications (2023) Vol. 14, Iss. 1
Open Access | Times Cited: 12

Scroll to top