Vaccine effectiveness after 1 st and 2 nd dose of the BNT162b2 mRNA Covid-19 Vaccine in long-term care facility residents and healthcare workers – a Danish cohort study

Safety and Efficacy of the BNT162b2 mRNA Covid-19 Vaccine

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The Danish Civil Registration System

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The Danish National Patient Register

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The Danish Microbiology Database (MiBa) 2010 to 2013

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The Danish vaccination register

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Estimating the effectiveness of the Pfizer COVID-19 BNT162b2 vaccine after a single dose. A reanalysis of a study of ‘real-world’ vaccination outcomes from IsraelPreprint

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Impact and effectiveness of mRNA BNT162b2 vaccine against SARS-CoV-2 infections and COVID-19 cases, hospitalisations, and deaths following a nationwide vaccination campaign in Israel: an observational study using national surveillance data

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Comparing COVID-19 vaccines for their characteristics, efficacy and effectiveness against SARS-CoV-2 and variants of concern: a narrative review

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Advances in COVID-19 mRNA vaccine development

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The efficacy and effectiveness of the COVID-19 vaccines in reducing infection, severity, hospitalization, and mortality: a systematic review

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Effectiveness of the CoronaVac vaccine in older adults during a gamma variant associated epidemic of covid-19 in Brazil: test negative case-control study

Ranzani, O., Hitchings, M. D. T., Dorión, M., D’Agostini, T. L., de Paula, R. C., de Paula, O. F. P., Villela, E. F. D. M., Torres, M. S. S., de Oliveira, S. B., Schulz, W. L., et al. (2021) · BMJ · doi:10.1136/bmj.n2015 · Cited by 348 · see citing works

Accelerated COVID-19 vaccine development: milestones, lessons, and prospects

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Household Secondary Attack Rates of SARS-CoV-2 by Variant and Vaccination Status

Madewell, Z. J., Yang, Y., Longini, I. M., Halloran, M. E., & Dean, N. E. (2022) · JAMA Network Open · doi:10.1001/jamanetworkopen.2022.9317 · Cited by 237 · see citing works

The effectiveness of COVID-19 vaccines in reducing the incidence, hospitalization, and mortality from COVID-19: A systematic review and meta-analysis

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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

Hitchings, M. D. T., Ranzani, O., Torres, M. S. S., de Oliveira, S. B., Almirón, M., Said, R., Borg, R., Schulz, W. L., de Oliveira, R. D., da Silva, P. V., et al. (2021) · The Lancet Regional Health - Americas · doi:10.1016/j.lana.2021.100025 · Cited by 200 · see citing works

Vaccine Effectiveness of the First Dose of ChAdox1 nCOV-19 and BNT162b2 Against SARS-CoV-2 Infection in Residents of Long Term Care Facilities (VIVALDI Study)

Shrotri, M., Krutikov, M., Palmer, T., Giddings, R., Azmi, B., Subbarao, S., Fuller, C., Irwin-Singer, A., Davies, D., Tut, G., et al. (2021) · The Lancet Infectious Diseases · doi:10.1016/s1473-3099(21)00289-9 · Cited by 180 · see citing works

Thromboembolism and the Oxford–AstraZeneca COVID-19 vaccine: side-effect or coincidence?

Østergaard, S. D., Schmidt, M., Horváth–Puhó, E., Thomsen, R. W., & Sørensen, H. T. (2021) · The Lancet · doi:10.1016/s0140-6736(21)00762-5 · Cited by 161 · see citing works

Estimated Number of COVID-19 Infections, Hospitalizations, and Deaths Prevented Among Vaccinated Persons in the US, December 2020 to September 2021

Steele, M. K., Couture, A., Reed, C., Iuliano, A. D., WHITAKER, M. D., Fast, H. E., Hall, A. J., MacNeil, A., Cadwell, B. L., Marks, K. J., et al. (2022) · JAMA Network Open · doi:10.1001/jamanetworkopen.2022.20385 · Cited by 138 · see citing works

Controlling the pandemic during the SARS-CoV-2 vaccination rollout

Viana, J., van Dorp, C. H., Nunes, A., Gomes, M. C., van Boven, M., Kretzschmar, M., Veldhoen, M., & Rozhnova, G. (2021) · Nature Communications · doi:10.1038/s41467-021-23938-8 · Cited by 131 · see citing works

A Systematic Review of Coronavirus Disease 2019 Vaccine Efficacy and Effectiveness Against Severe Acute Respiratory Syndrome Coronavirus 2 Infection and Disease

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Infections, hospitalisations, and deaths averted via a nationwide vaccination campaign using the Pfizer–BioNTech BNT162b2 mRNA COVID-19 vaccine in Israel: a retrospective surveillance study

Haas, E. J., McLaughlin, J. M., Khan, F. L., Angulo, F. J., Anis, E., Lipsitch, M., Singer, S. R., Mircus, G., Brooks, N., Smaja, M., et al. (2021) · The Lancet Infectious Diseases · doi:10.1016/s1473-3099(21)00566-1 · Cited by 125 · see citing works

Real-world effectiveness of BNT162b2 mRNA vaccine: a meta-analysis of large observational studies

Kow, C. S., & Hasan, S. S. (2021) · Inflammopharmacology · doi:10.1007/s10787-021-00839-2 · Cited by 65 · see citing works

Six months of COVID vaccines: what 1.7 billion doses have taught scientists

Ledford, H. K. (2021) · Nature · doi:10.1038/d41586-021-01505-x · Cited by 67 · see citing works

Effectiveness of COVID-19 Vaccines against Delta (B.1.617.2) Variant: A Systematic Review and Meta-Analysis of Clinical Studies

Pormohammad, A., Zarei, M., Ghorbani, S., Mohammadi, M., Neshin, S. A. S., Khatami, A., Turner, D., Djalalinia, S., Mousavi, S. A., Mardani-Fard, H. A., et al. (2021) · Vaccines · doi:10.3390/vaccines10010023 · Cited by 59 · see citing works

COVISHIELD (AZD1222) VaccINe effectiveness among healthcare and frontline Workers of INdian Armed Forces: Interim results of VIN-WIN cohort study

Ghosh, S., Shankar, S., Chatterjee, K., Chatterjee, K., Yadav, A., Pandya, K., Suryam, V., Agrawal, S., Ray, S., Phutane, V. S., et al. (2021) · Medical Journal Armed Forces India · doi:10.1016/j.mjafi.2021.06.032 · Cited by 54 · see citing works

Real-world study of the effectiveness of BBIBP-CorV (Sinopharm) COVID-19 vaccine in the Kingdom of Morocco

Zhang, Y., Belayachi, J., Yang, Y., Fu, Q., Rodewald, L. E., Li, H., Yan, B., Wang, Y., Shen, Y., Yang, Q., et al. (2022) · BMC Public Health · doi:10.1186/s12889-022-14016-9 · Cited by 57 · see citing works

Vaccine effectiveness against SARS-CoV-2 infection, hospitalization, and death when combining a first dose ChAdOx1 vaccine with a subsequent mRNA vaccine in Denmark: A nationwide population-based cohort study

Gram, M. A., Nielsen, J. O., Schelde, A. B., Nielsen, K. F., Moustsen‐Helms, I. R., Sørensen, A. K. B., Valentiner‐Branth, P., & Emborg, H. (2021) · PLoS Medicine · doi:10.1371/journal.pmed.1003874 · Cited by 53 · see citing works

Direct and Indirect Effectiveness of mRNA Vaccination against Severe Acute Respiratory Syndrome Coronavirus 2 in Long-Term Care Facilities, Spain

Monge, S., Olmedo, C., Alejos, B., Lapeña, M. F., Sierra, M. J., Limia, A., & COVID-19 registries study group (2021) · Emerging infectious diseases · doi:10.3201/eid2710.211184 · Cited by 49 · see citing works

Vaccine effectiveness against infection and onwards transmission of COVID-19: Analysis of Belgian contact tracing data, January-June 2021

Braeye, T., Cornelissen, L., Catteau, L., Haarhuis, F., Proesmans, K., Ridder, K. D., Djiena, A., Mahieu, R., Leeuw, F. D., Dreuw, A., et al. (2021) · Vaccine · doi:10.1016/j.vaccine.2021.08.060 · Cited by 45 · see citing works

The effectiveness of inactivated SARS‐CoV‐2 vaccine (CoronaVac) on antibody response in participants aged 65 years and older

Karameşe, M., & Tütüncü, E. E. (2021) · Journal of Medical Virology · doi:10.1002/jmv.27289 · Cited by 43 · see citing works

Vaccine Development against COVID-19: Study from Pre-Clinical Phases to Clinical Trials and Global Use

Ahmed, S., Khan, S., Imran, I., Mughairbi, F. A., Sheikh, F. S., Hussain, J., Khan, A., & Al‐Harrasi, A. (2021) · Vaccines · doi:10.3390/vaccines9080836 · Cited by 41 · see citing works

Sources of bias in observational studies of covid‐19 vaccine effectiveness

Fung, K., Jones, M., & Doshi, P. (2023) · Journal of Evaluation in Clinical Practice · doi:10.1111/jep.13839 · Cited by 44 · see citing works

Vaccination of older adults: Influenza, pneumococcal disease, herpes zoster, COVID-19 and beyond

Weinberger, B. (2021) · Immunity & Ageing · doi:10.1186/s12979-021-00249-6 · Cited by 43 · see citing works

Poor Antibody Response to BioNTech/Pfizer Coronavirus Disease 2019 Vaccination in Severe Acute Respiratory Syndrome Coronavirus 2–Naive Residents of Nursing Homes

Pannus, P., Neven, K. Y., Craeye, S. D., Heyndríckx, L., Kerckhove, S. V., Georges, D., Míchiels, J., Francotte, A., den Bulcke, M. V., Zrein, M. A., et al. (2021) · Clinical Infectious Diseases · doi:10.1093/cid/ciab998 · Cited by 37 · see citing works

A COVID-19 vaccination model for Aotearoa New Zealand

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Duration of vaccine effectiveness against SARS-CoV-2 infection, hospitalisation, and death in residents and staff of long-term care facilities in England (VIVALDI): a prospective cohort study

Shrotri, M., Krutikov, M., Nacer, H., Azmi, B., Palmer, T., Giddings, R., Fuller, C., Irwin-Singer, A., Baynton, V., Tut, G., et al. (2022) · The Lancet Healthy Longevity · doi:10.1016/s2666-7568(22)00147-7 · Cited by 35 · see citing works

Neutralizing antibody responses to SARS-CoV-2 variants in vaccinated Ontario long-term care home residents and workers

Abe, K. T., Hu, Q., Mozafarihashjin, M., Samson, R., Manguiat, K., Robinson, A., Rathod, B., Hardy, W. R., Wang, J. H., Iskilova, M., et al. (2021) · doi:10.1101/2021.08.06.21261721 · Cited by 32 · see citing works

High coverage COVID-19 mRNA vaccination rapidly controls SARS-CoV-2 transmission in long-term care facilities

Salazar, P. M. D., Link, N., Lamarca, K., & Santillana, M. (2021) · Communications Medicine · doi:10.1038/s43856-021-00015-1 · Cited by 32 · see citing works

Vaccine effectiveness of the BNT162b2 mRNA COVID-19 vaccine against RT-PCR confirmed SARS-CoV-2 infections, hospitalisations and mortality in prioritised risk groupsPreprint

Emborg, H., Valentiner‐Branth, P., Schelde, A. B., Nielsen, K. F., Gram, M. A., Moustsen‐Helms, I. R., Chaine, M., Seidelin, U. H., & Nielsen, J. O. (2021) · medRxiv · doi:10.1101/2021.05.27.21257583 · Cited by 33 · see citing works

Beta SARS-CoV-2 variant and BNT162b2 vaccine effectiveness in long-term care facilities in France

Lefèvre, B., Tondeur, L., Madec, Y., Grant, R., Lina, B., van der Werf, S., Rabaud, C., Fontanet, A. L., & Legoff, A. (2021) · The Lancet Healthy Longevity · doi:10.1016/s2666-7568(21)00230-0 · Cited by 29 · see citing works

Evaluation of Transplacental Antibody Transfer in SARS-CoV-2-Immunized Pregnant Women

Shen, C., Fu, Y.-C., Lin, Y.-P., Shen, C., Sun, D.-J., Shen, C., & Cheng, C. (2022) · Vaccines · doi:10.3390/vaccines10010101 · Cited by 27 · see citing works

Decontamination of SARS-CoV-2 from cold-chain food packaging provides no marginal benefit in risk reduction to food workers

Sobolik, J. S., Sajewski, E. T., Jaykus, L., Cooper, D. K., Lopman, B. A., Kraay, A. N. M., Ryan, P. B., Guest, J. L., Girard, A. W., & León, J. S. (2021) · Food Control · doi:10.1016/j.foodcont.2022.108845 · Cited by 28 · see citing works

Shooting at a Moving Target—Effectiveness and Emerging Challenges for SARS-CoV-2 Vaccine Development

Günl, F., Mecate-Zambrano, A., Rehländer, S., Hinse, S., Ludwig, S., & Brunotte, L. (2021) · Vaccines · doi:10.3390/vaccines9101052 · Cited by 27 · see citing works

A systematic review of effectiveness of BNT162b2 mRNA and ChAdOx1 adenoviral vector COVID-19 vaccines in the general population

IHEANACHO, C. O., Eze, U. I. H., & Adida, E. A. (2021) · Bulletin of the National Research Centre/Bulletin of the National Research Center · doi:10.1186/s42269-021-00607-w · Cited by 27 · see citing works

COVID-19 Vaccine Platforms: Challenges and Safety Contemplations

Al-Jighefee, H. T., Najjar, H., Ahmed, M. N., Qush, A., Awwad, S., & Kamareddine, L. (2021) · Vaccines · doi:10.3390/vaccines9101196 · Cited by 27 · see citing works

Effectiveness of BNT162b2 mRNA COVID-19 vaccine against SARS-CoV-2 variant Beta (B.1.351) among persons identified through contact tracing in Israel: A prospective cohort study

Singer, S. R., Angulo, F. J., Swerdlow, D. L., McLaughlin, J. M., Hazan, I., Ginish, N., Anis, E., Mendelson, E., Mor, O., Zuckerman, N. S., et al. (2021) · EClinicalMedicine · doi:10.1016/j.eclinm.2021.101190 · Cited by 30 · see citing works

Effectiveness of the WHO-Authorized COVID-19 Vaccines: A Rapid Review of Global Reports till 30 June 2021

Cheng, C.-J., Lu, C., Chang, Y., Sun, Y., Chu, H., Lee, C., Liu, C.-H., Lin, C.-H., Lu, C.-J., & Li, C. (2021) · Vaccines · doi:10.3390/vaccines9121489 · Cited by 24 · see citing works

Effectiveness of vaccination against SARS-CoV-2 infection and Covid-19 hospitalisation among Finnish elderly and chronically ill—An interim analysis of a nationwide cohort study

Baum, U., Poukka, E., PALMU, A. A. I., Salo, H., Lehtonen, T., & Leino, T. M. (2021) · PLoS ONE · doi:10.1371/journal.pone.0258704 · Cited by 21 · see citing works

Effectiveness of Vaccination against SARS-CoV-2 Infection in the Pre-Delta Era: A Systematic Review and Meta-Analysis

Meggiolaro, A., Schepisi, M. S., Nikolaidis, G., Mipatrini, D., Siddu, A., & Rezza, G. (2022) · Vaccines · doi:10.3390/vaccines10020157 · Cited by 18 · see citing works

Severity of COVID-19 Infection Using Chest Computed Tomography Severity Score Index Among Vaccinated and Unvaccinated COVID-19-Positive Healthcare Workers: An Analytical Cross-Sectional Study

Naik, B. R., Kumar, S. A., Rachegowda, N., Ullas, L. Y., Revanth, R., & Aluru, N. R. V. S. (2022) · Cureus · doi:10.7759/cureus.22087 · Cited by 16 · see citing works

COVID-19 Vaccine Effectiveness: A Review of the First 6 Months of COVID-19 Vaccine Availability (1 January–30 June 2021)

Hatcher, S. M., Endres‐Dighe, S. M., Angulo, F. J., Srivastava, A. K., Nguyen, J. L., Khan, F. L., Martin, C., Swerdlow, D. L., McLaughlin, J. M., Ubaka-Blackmoore, N., et al. (2022) · Vaccines · doi:10.3390/vaccines10030393 · Cited by 16 · see citing works

Healthcare workers’ SARS-CoV-2 infection rates during the second wave of the pandemic: follow-up study

Würtz, A. M., Kinnerup, M., Pugdahl, K., Schlünssen, V., Vestergaard, J., Nielsen, K., Cramer, C., Bonde, J., Biering, K., Carstensen, O., et al. (2022) · Scandinavian Journal of Work, Environment and Health · doi:10.5271/sjweh.4049 · Cited by 12 · see citing works

The Population-Wide Risk-Benefit Profile of Extending the Primary COVID-19 Vaccine Course Compared with an mRNA Booster Dose Program

Shiri, T., Evans, M., Talarico, C. A., Morgan, A. R., Mussad, M., Buck, P. O., McEwan, P. C., & Strain, W. D. (2022) · Vaccines · doi:10.3390/vaccines10020140 · Cited by 12 · see citing works

Two doses of the mRNA BNT162b2 vaccine reduce severe outcomes, viral load and secondary attack rate: evidence from a SARS-CoV-2 Alpha outbreak in a nursing home in Germany, January-March 2021Preprint

Meyer, E. D., Sandfort, M., Bender, J. K., Matysiak‐Klose, D., Dörre, A., Bojara, G., Beyrer, K., & Hellenbrand, W. (2021) · medRxiv · doi:10.1101/2021.09.13.21262519 · Cited by 12 · see citing works

Effectiveness of BNT162b2 and ChAdOx1 Vaccines against Symptomatic COVID-19 among Healthcare Workers in Kuwait: A Retrospective Cohort Study

Alali, W. Q., Ali, L. A., AlSeaidan, M., & Al-Rashidi, M. (2021) · Healthcare · doi:10.3390/healthcare9121692 · Cited by 12 · see citing works

COVID-19 vaccine effectiveness among healthcare workers: a hospital-based cohort study

Gaio, V., Santos, A. J., Amaral, P., Viana, J. F., Antunes, I., Pacheco, V., Paiva, A. A., Leite, P. P., Gonçalves, L. A., Araújo, L., et al. (2023) · BMJ Open · doi:10.1136/bmjopen-2022-068996 · Cited by 11 · see citing works

High vaccine effectiveness against coronavirus disease 2019 (COVID-19) and severe disease among residents and staff of long-term care facilities in Norway, November 2020–June 2021

Starrfelt, J., Danielsen, A. S., Kacelnik, O., Børseth, A. W., Seppälä, E. M., & Meijerink, H. (2022) · Antimicrobial Stewardship & Healthcare Epidemiology · doi:10.1017/ash.2021.246 · Cited by 10 · see citing works

BNT162b2 Vaccination Elicits Strong Serological Immune Responses Against SARS-CoV-2 Including Variants of Concern in Elderly Convalescents

Jahrsdörfer, B., Fabricius, D., Scholz, J. A. M., Ludwig, C., Grempels, A., Lotfi, R., Körper, S., Adler, G., & Schrezenmeier, H. (2021) · Frontiers in Immunology · doi:10.3389/fimmu.2021.743422 · Cited by 9 · see citing works

BNT162b2 vaccination reduced infections and transmission in a COVID‐19 outbreak in a nursing home in Germany, 2021

Meyer, E. D., Sandfort, M., Bender, J. K., Matysiak‐Klose, D., Dörre, A., Bojara, G., Beyrer, K., & Hellenbrand, W. (2022) · Influenza and Other Respiratory Viruses · doi:10.1111/irv.13051 · Cited by 9 · see citing works

Outbreak of SARS-CoV-2 Lineage 20I/501Y.V1 in a Nursing Home Underlines the Crucial Role of Vaccination in Both Residents and Staff

Orsi, A., Domnich, A., Pace, V. D., Ricucci, V., Caligiuri, P., Bottiglieri, L., Vagge, R., Cavalleri, M., Orlandini, F., Bruzzone, B. M., et al. (2021) · Vaccines · doi:10.3390/vaccines9060591 · Cited by 9 · see citing works

Validation of the effectiveness of SARS-CoV-2 vaccines in older adults in “real-world” settings

Weng, N., & Pawelec, G. (2021) · Immunity & Ageing · doi:10.1186/s12979-021-00248-7 · Cited by 6 · see citing works

Comparison of the Clinical and Laboratory Findings and Outcomes of Hospitalized COVID-19 Patients Who Were Either Fully Vaccinated with Coronavac or Not: An Analytical, Cross Sectional Study

Yavuz, S. Ş., Tunçer, G., Aydın, Ö. A., Aydın, M., Pehlıvanoglu, F., Tok, Y., Meşe, S., Gündüz, A., Geyiktepe-Güçlü, C., Özdoğan, İ., et al. (2022) · Vaccines · doi:10.3390/vaccines10050733 · Cited by 7 · see citing works

Impaired immunity and high attack rates caused by SARS‐CoV‐2 variants among vaccinated long‐term care facility residents

Obach, D., Solastie, A., Liedes, O., Vara, S., Krzyżewska, E., Brinkmann, L., Haveri, A., Hammer, C. C., Dub, T., Meri, S., et al. (2022) · Immunity Inflammation and Disease · doi:10.1002/iid3.679 · Cited by 4 · see citing works

Changes in Behavior After Vaccination and Opinions Toward Mask Wearing: Thoracic Oncology Patient–Reported Experiences During the COVID-19 Pandemic

Bolt, T. A., Tufman, A., Sellmer, L., Kahnert, K., Mertsch, P., Kovács, J., Kauffmann-Guerrero, D. E., Munker, D., Manapov, F., Schneider, C., et al. (2022) · Clinical Medicine Insights Oncology · doi:10.1177/11795549221123618 · Cited by 4 · see citing works

Assessment of Comirnaty Injections of Pregnant Women in the Manufacturer’s Risk Management Plan and by the European Medicines Agency: Mandatory Injections for Caregivers in France

Sainton, J. (2023) · International Journal of Vaccine Theory Practice and Research · doi:10.56098/ijvtpr.v3i1.72 · Cited by 2 · see citing works

Global disparities in the introduction, scale-up, and effectiveness evaluation of COVID-19 vaccines

Pesce, M., Feikin, D. R., Higdon, M. M., O’Brien, K. L., Patel, M. K., Rearte, A., Vizzotti, C., Wilder‐Smith, A., & Parker, E. P. K. (2025) · Nature Communications · doi:10.1038/s41467-025-63950-w · Cited by 3 · see citing works

Implementing mandatory COVID ‐19 vaccination for Australian aged care workers

Dykgraaf, S. H., Desborough, J., Parkinson, A., Sturgiss, E. A., Kelly, P., & Kidd, M. (2022) · The Medical Journal of Australia · doi:10.5694/mja2.51770 · Cited by 3 · see citing works

COVID-19 Vaccine Effectiveness in a Diverse Urban Health Care Worker Population

Iliaki, E. F., Lan, F., Christophi, C. A., Guidotti, G., Jobrack, A. D., Buley, J., Nathan, N., Osgood, R. A., Bruno‐Murtha, L. A., & Kales, S. N. (2021) · Mayo Clinic Proceedings · doi:10.1016/j.mayocp.2021.10.005 · Cited by 3 · see citing works

Detection of SARS-CoV-2 Neutralizing Antibodies in Vaccinated Pregnant Women and Neonates by Using a Lateral Flow Immunoassay Coupled with a Spectrum-Based Reader

Chen, W., Lin, Y.-P., Cheng, C., Shen, C., Li, C., Wang, Y., Shih, T., Hong, C., Chang, T., & Shen, C. (2022) · Biosensors · doi:10.3390/bios12100891 · Cited by 3 · see citing works

Transmissibility of COVID-19 among Vaccinated Individuals: A Rapid Literature Review - Update #1Preprint

Egunsola, O., Mastikhina, L., Dowsett, L. E., Farkas, B., Hofmeister, M., Saxinger, L. M., & Clement, F. M. (2021) · medRxiv · doi:10.1101/2021.06.29.21255526 · Cited by 4 · see citing works

Is the COVID-19 Pandemic Over? The Current Status of Boosters, Immunosenescence, Long Haul COVID, and Systemic Complications

Ting, M., & Suzuki, J. B. (2022) · International Journal of Translational Medicine · doi:10.3390/ijtm2020021 · Cited by 2 · see citing works

21 Epidemiologic Research in the Setting of Outbreak Response

Reingold, A. L. (2024) · Springer eBooks · doi:10.1007/978-3-031-48408-7_30 · Cited by 1 · see citing works

Protective Duration of ChAdOx1 and BNT162b2 Vaccines Against SARS-CoV-2 Infection

Alfaleh, A., Alkattan, A., Alzaher, A. A., Radwan, N. M., Mahmoud, N., Alageel, A., Alhabib, D., Alsalameen, E., Sagor, K., Haji, A. M., et al. (2022) · Clinical Drug Investigation · doi:10.1007/s40261-022-01195-x · Cited by 1 · see citing works

The effectiveness of single and two-dose Pfizer-BioNTech vaccine against SARS-COV-2: A real-world evidence from Saudi Arabia

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Can integrated post-exposure vaccination against SARS-COV2 mitigate severe disease?

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COVID-19 vaccine effectiveness among healthcare workers in Portugal: results from a hospital-based cohort study, December 2020 to November 2021Preprint

Gaio, V., Silva, A. A. D. O., Amaral, P., Viana, J. F., Leite, P. P., Dias, C. M., Kislaya, I., Nunes, B., & Machado, A. (2022) · medRxiv · doi:10.1101/2022.01.07.22268889 · Cited by 1 · see citing works

Avoidable Intensive Care Resource Use of Unvaccinated COVID-19 Patients: Interpretation and Policy ImplicationsPreprint

Joffe, A. R., & Milburn, C. (2022) · Preprints.org · doi:10.20944/preprints202211.0497.v1

Avoidable Intensive Care Resource Use of Unvaccinated COVID-19 Patients: Interpretation and Policy ImplicationsPreprint

Joffe, A. R., & Milburn, C. (2023) · Preprints.org · doi:10.20944/preprints202211.0497.v2

Real-World Efficacy of N95, Surgical, and Cloth Masks in Mitigating SARS-CoV-2 Respiratory Infections: A Comprehensive Comparative StudyPreprint

Cheok, A. D., Cai, J., Yan, Y., Pan, Z., & Zhang, E. Y. (2023) · Qeios · doi:10.32388/rfie4g · Cited by 1 · see citing works

Third-Party Materials

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An Overview of the COVID-19 Vaccine Effectiveness

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Illness and Death in the Covid Epoch

Briggs, D., Telford, L., Lloyd, A., Ellis, A., & Kotzé, J. (2021) · Springer eBooks · doi:10.1007/978-3-030-88825-1_3

Comparison of the Clinical and Laboratory Findings and Outcomes of Hospitalized COVID-19 Patients who Were Vaccinated with Coronavac or Unvaccinated: An Analytical, Cross Sectional StudyPreprint

Yavuz, S. Ş., Tunçer, G., Aydın, Ö. A., Aydın, M., Pehlıvanoglu, F., Tok, Y., Meşe, S., Gündüz, A., Geyiktepe-Güçlü, C., Özdoğan, İ., et al. (2022) · Research Square · doi:10.21203/rs.3.rs-1063869/v1

Real-World Efficacy of N95, Surgical, and Cloth Masks in Mitigating SARS-CoV-2 Respiratory Infections: A Comprehensive Comparative StudyPreprint

Cheok, A. D., Cai, J., Yan, Y. Z., Pan, Z., & Zhang, E. Y. (2023) · Qeios · doi:10.32388/rfie4g.2

Unmeasured confounding and misclassification in vaccine effectiveness studies using electronic health records (EHRs): an evaluation of a multi country European study (VEBIS-EHR)Preprint

Humphreys, J., Nicolay, N., Braeye, T., Evercooren, I. V., Hansen, C. H., Moustsen‐Helms, I. R., Sacco, C., Fabiani, M., Castilla, J., Martínez‐Baz, I., et al. (2025) · medRxiv · doi:10.1101/2025.04.30.25326722

Vaccine Effectiveness of the First Dose of ChAdox1 nCOV-19 and BNT162b2 Against SARS-CoV-2 Infection in Residents of Long Term Care Facilities (VIVALDI Study)

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Vaccine Effectiveness of the First Dose of ChAdox1 nCOV-19 and BNT162b2 Against SARS-CoV-2 Infection in Residents of Long Term Care Facilities (VIVALDI Study)Preprint

Shrotri, M., Krutikov, M., Palmer, T., Giddings, R., Azmi, B., Subbarao, S., Fuller, C., Irwin-Singer, A., Davies, D., Tut, G., et al. (2021) · SSRN Electronic Journal · doi:10.2139/ssrn.3814794 · Cited by 16 · see citing works

Effectiveness of BNT162b2 and ChAdOx-1 vaccines in residents of long-term care facilities in England using a time-varying proportional hazards model

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Vaccine Effectiveness Against Infection and Death Due to SARS-CoV-2, Following One and Two Doses of the BNT162b2 and ChADox-1 in Residents of Long-Term Care Facilities in England, Using a Time-Varying Proportional Hazards ModelPreprint

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Effectiveness of BNT162b2 mRNA COVID-19 Vaccine Against Acquisitions of SARS-CoV-2 Among Health Care Workers in Long-Term Care Facilities: A Prospective Cohort Study

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