COVID-19 vaccination produces a more consistent immune response than a past infection. With the delta variant, the difference in protection may be even greater.
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Articles on Viruses
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You could say there are a ‘crapload’ of viruses in the human gut. Luckily, most of these do not attack our cells, but instead feed on bacteria.
Vaccines have successfully curtailed viral diseases for decades. But as COVID-19 vaccination hesitancy shows, mistrust and misinformation continue to put lives at risk.
Scientists get up close and personal with deadly pathogens to give doctors the tools they need to treat people sickened by germs. The key is keeping the researchers – and everyone around them – safe.
Bat hosts, lab leaks – tracing SARS-CoV-2 to its origins involves more than just tracking down patient zero.
Gain-of-function studies make a natural virus more dangerous or transmissible to humans. Could the Wuhan Institute of Virology be the source of SARS-CoV-2?
The lab accident theory of the origins of Covid-19 has gained traction in recent months. We need a proper investigation to find out what really happened.
A more coordinated effort by scientists, stakeholders and community members will be required to stop the next deadly virus that’s already circulating in our midst.
A study of viral variants finds Piscine orthoreovirus continuously spills over from farmed salmon to wild salmon.
Pandemic viruses arise from raising, harvesting and eating animals. Policy strategy for averting the next pandemic should include supporting those already seeking to make plant-based dietary changes.
Technology is allowing scientists to better understand fungal viruses, with the aim of managing them more effectively.
Van Leeuwenhoek, who discovered bacteria, is one of the most important figures in the history of medicine, laying the groundwork for today’s understanding of infectious disease.
Cuba’s access to internationally produced vaccines was nearly impossible due to the U.S. blockade. Its decision to make its own vaccines stands to pay off handsomely.
As climate change drives pollen counts upward, that could potentially result in greater human susceptibility to other viruses, as well.
As the world has focused on the COVID-19 pandemic, other microbial foes are waging war on humans. Antibiotic-resistant bacteria pose a growing threat. But viruses may defeat them.
With the vaccines now being administered at sites around the US, it is important to address misinformation surrounding the effort.
‘Long COVID’ – in which people have symptoms lasting more than a few weeks – is turning out to be very common. People hospitalized for COVID-19 are at highest risk, but they aren’t alone.
Occasionally, a mutation will give the virus a better chance of surviving and reproducing itself, and will result in a new population (known as a new lineage)
The pandemic will not end for anyone, anywhere until it is controlled in every country. Tanzania’s approach will make it that much harder for normality to return.
The results indicate that the vaccine efficacy in the UK was 89% for individuals who received at least two doses of vaccine. In South Africa, the vaccine efficacy was 60% in people without HIV.
Top contributors
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Lecturer in Virology, Queen's University Belfast
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Professor Emerita of Biology, Indiana University
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Research Scientist and Principal Investigator at the Vaccine and Infectious Disease Organization, University of Saskatchewan
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Adjunct Associate Professor, Faculty of Medicine, The University of Queensland
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Senior Lecturer in Clinical Microbiology, University of Leicester
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Associate Professor of Public Policy, University of Maryland, Baltimore County
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Associate Director of Microbiology, University of California, San Diego
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Regents' Professor & Chair, Medical Laboratory Science, Texas State University
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Senior Lecturer in Microbiology, University of Sussex
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Professor of Medicine and Vice President, Research, McMaster University
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Professor, Discipline of Paediatrics and Child Health, University of Sydney
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Director, The Peter Doherty Institute for Infection and Immunity, The University of Melbourne and Royal Melbourne Hospital and Consultant Physician, Department of Infectious Diseases, Alfred Hospital and Monash University, The Peter Doherty Institute for Infection and Immunity
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Professor of Medicine, University of Virginia
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Professor of Medicine, University of East Anglia
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Virologist, The University of Queensland
