Evaluation of a COVID-19 Vaccine Campaign and SARS-CoV-2 Infection and Mortality Among Adults Aged 60 Years And Older in a Middle-Income Country

Article Medicine, General & Internal

Safety and efficacy of the ChAdOx1 nCoV-19 vaccine (AZD1222) against SARS-CoV-2: an interim analysis of four randomised controlled trials in Brazil, South Africa, and the UK

Merryn Voysey et al.

Summary: The ChAdOx1 nCoV-19 vaccine has been shown to have an acceptable safety profile and effectiveness against symptomatic COVID-19, with higher efficacy observed in the group that received a low dose followed by a standard dose.

LANCET (2021)

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Article Medicine, General & Internal

Safety and efficacy of an rAd26 and rAd5 vector-based heterologous prime-boost COVID-19 vaccine: an interim analysis of a randomised controlled phase 3 trial in Russia

Denis Y. Logunov et al.

Summary: The Gam-COVID-Vac vaccine showed 91.6% efficacy against COVID-19 in the phase 3 trial, with good safety and tolerability in a large cohort of participants.

LANCET (2021)

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Article Medicine, General & Internal

BNT162b2 mRNA Covid-19 Vaccine in a Nationwide Mass Vaccination Setting

Noa Dagan et al.

Summary: A study conducted in Israel on nearly 600,000 individuals showed that the BNT162b2 mRNA vaccine was effective in reducing the risk of infection, hospitalization, and severe Covid-19. The effectiveness in preventing death was 72% during the period from day 14 through day 20 after the first dose, and hospitalization was reduced by 87% for the period 7 or more days after the second dose, similar to results from a randomized trial.

NEW ENGLAND JOURNAL OF MEDICINE (2021)

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Article Medicine, General & Internal

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

Eric J. Haas et al.

Summary: This study assessed the real-world effectiveness of the Pfizer-BioNTech mRNA COVID-19 vaccine BNT162b2 in Israel, showing high efficacy in preventing SARS-CoV-2 infections, hospitalizations, severe disease, and death. As vaccine coverage increased, there were marked declines in SARS-CoV-2 outcomes, indicating that COVID-19 vaccination can help control the pandemic.

LANCET (2021)

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Article Medicine, General & Internal

Effectiveness of the Pfizer-BioNTech and Oxford-AstraZeneca vaccines on covid-19 related symptoms, hospital admissions, and mortality in older adults in England: test negative case-control study

Jamie Lopez Bernal et al.

Summary: This study estimated the real-world effectiveness of Pfizer-BioNTech BNT162b2 and Oxford-AstraZeneca ChAdOx1-S vaccines against confirmed COVID-19 symptoms, hospital admissions, and deaths. The vaccines showed significant reduction in symptomatic COVID-19 among older adults and further protection against severe disease. Both vaccines demonstrated similar effects and protection was maintained for over 6 weeks.

BMJ-BRITISH MEDICAL JOURNAL (2021)

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Article Medicine, General & Internal

Effect of 2 Inactivated SARS-CoV-2 Vaccines on Symptomatic COVID-19 Infection in Adults A Randomized Clinical Trial

Nawal Al Kaabi et al.

Summary: This interim analysis of an ongoing randomized trial in the UAE and Bahrain evaluated the efficacy of two inactivated COVID-19 vaccines in preventing symptomatic cases and adverse events in healthy adults. The study found that both vaccines significantly reduced the risk of symptomatic COVID-19 compared to the control group, with efficacy rates of 72.8% and 78.1%. Serious adverse events were rare across all groups.

JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION (2021)

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Article Multidisciplinary Sciences

Brazilian town experiment shows mass vaccination can wipe out COVID-19

Sofia Moutinho

SCIENCE (2021)

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News Item Multidisciplinary Sciences

THE TRUE TOLL OF THE PANDEMIC

Giuliana Viglione

NATURE (2020)

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Evaluation of a COVID-19 Vaccine Campaign and SARS-CoV-2 Infection and Mortality Among Adults Aged 60 Years And Older in a Middle-Income Country

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