Vaccine passes have outlived their usefulness, at least for now. But as New Zealand’s Omicron wave begins to subside, other public health measures remain vitally important.
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Articles on Vaccine efficacy
Displaying 1 - 20 of 26 articles
For hospitalisations and deaths, the difference between vaccinated and unvaccinated people is more dramatic. Only 5% of New Zealanders are unvaccinated, but they account for 20% of hospitalisations.
Emerging evidence suggests the highly infectious Omicron variant has the ability to escape the protection two vaccine doses offer.
For a number of reasons, as time goes on vaccines become less effective. So how do researchers calculate how well vaccines are working?
Using a robust statistical model, researchers estimate that coronavirus vaccines had prevented 140,000 deaths by May 9, 2021.
Epidemics do not require the total eradication of the disease to end.
A medical student answers questions he gets asked at a COVID-19 vaccine clinic: Efficacy versus real-world effectiveness, immune response and how the mRNA vaccines compare to vaccines already in wide use.
Vaccine efficacy is usually expressed as a percentage, but what is it actually measuring? Statisticians explain what the numbers mean, and what they say about how well a vaccine can protect us.
AstraZeneca, Pfizer and Moderna appear equivalent in reducing your chance of serious illness from COVID-19.
China has administered more than one billion doses of its homegrown COVID-19 vaccines, the majority of which were developed by local companies Sinovac and Sinopharm. So what do we know about them?
Even if we came up with a definition of what makes the “best” vaccine, we don’t have the luxury of choice, when vaccines are in short supply.
What does the Seychelles experience tell us about variants, vaccine efficacy and herd immunity?
An immunologist explains that you get some protection from the first dose of the mRNA vaccines but you need two to build up strong immunity, particularly to newer coronavirus variants.
With four COVID-19 vaccines approved for use in Canada, it’s time to answer FAQs about efficacy, immunity, eradication and variants.
Real-world studies of vaccines aren’t directly comparable with clinical trials, but their results are still good news.
The arrival of COVID-19 vaccines has raised hope for an end to the pandemic. Hopefully that’s true, but there are variables. Here are some factors that could affect the success of the vaccine rollout.
New trial data appears to support pushing back the second dose to 12 weeks.
The vaccine is still very likely to be protective in over-65s, even if efficacy in this age group is unknown.
Whether you are predicting the outcome of an election or studying how effective a new drug is, there will always be some uncertainty. A margin of error is how statisticians measure that uncertainty.
Data coming through from phase 3 trials are encouraging. But participants don’t represent the whole community — so we can’t be sure these vaccines will work as well in everyone.
Top contributors
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Professor of Medicine, University of East Anglia
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Professor of Medicine, University of Virginia
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Professor of Medicine, Bond University
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Professor of Sociology, University of Colorado Denver
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Associate Professor, Discipline of Childhood and Adolescent Health, University of Sydney
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Professor of Biostatistics, University of Auckland
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Professor of Evidence-Based Practice, Institute for Evidence-Based Healthcare, Bond University
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Professor of Global Biosecurity, NHMRC Principal Research Fellow, Head, Biosecurity Program, Kirby Institute, UNSW Sydney
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Professor of Bioethics & Medicine, Sydney Health Ethics, Haematologist/BMT Physician, Royal North Shore Hospital and Director, Praxis Australia, University of Sydney
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Director, The Centre for Philosophy of Epidemiology Medicine and Public Health, University of Johannesburg
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Research Assistant Professor of Epidemiology, University of Michigan
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Professor of medicine, epidemiology & biostatistics, and philosophy, Western University
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Professor, Dalla Lana School of Public Health, University of Toronto
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Associate Professor of Viral Immunology, Department of Pathobiology, University of Guelph
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Professor of Medicine, Monash University
