Patients with blood cancer undergoing stem cell transplantation have a high risk of complications. The bacteria in their gut, however, can help their immune system recover and fight infections.
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Articles on T cells
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While the immune system naturally gets weaker with age, social stressors like trauma and discrimination can hasten immunosenescence.
One promising cancer treatment has been in the works for decades, but severe side effects have kept it out of the clinic. A reengineered version may offer a way to safely harness its potent effects.
Infection seems to add a boost to immunity – but vaccination is still vital and breakthrough infections should be avoided as much as possible.
Some of the omicron variant’s unique properties – such as its ability to spread rapidly while causing milder COVID-19 infections – could usher in a new phase of the pandemic.
DNA and mRNA vaccines produce a different kind of immune response than traditional vaccines, allowing researchers to tackle some previously unsolvable problems in medicine.
Having a range of immune cells that target different parts of the virus appears to make disease milder and could protect against future variants.
We won’t know whether Omicron evades COVID vaccines for another few weeks. Here’s why.
There’s not enough evidence yet to support the AstraZeneca CEO’s statement. But it is theoretically plausible.
But the immune cells that vaccination spurs do last a long time.
People with HIV need to take daily medication to keep the virus at bay. A study has found that a new treatment combination could boost immunity and control virus levels even after stopping medication.
It’s unclear whether the patients were already predisposed to these diseases, or the infection unmasked a process that had already begun. Or perhaps the infection triggered a completely new illness.
People with weakened immune systems are at a high risk of severe and prolonged COVID-19 infections. An extra vaccine dose can bolster protection.
If you’ve already had the coronavirus and recovered, you might be tempted to give the vaccine a pass. A scientist explains why the shot offers the best protection against future infection.
Our study found lower levels of one type of immune cell – which may even be seen years before a person develops the disease.
Until now, researchers haven’t quite known why the immune systems of breastfed babies are better equipped.
Long-term protection will depend on the ‘memory response’ developed by our immune systems – and the initial signs are promising.
Antibody levels naturally fade – the key question is whether infected people sustain adequate levels of T cells and B cells.
Vaccines work by teaching your immune system about new viruses. Your immune cells are very clever – they will remember what they learnt, and protect you if you encounter that virus in the future.
Older coronavirus patients face grimmer outlooks. A virologist explains the aging-related changes in how immune systems work that are to blame.
Top contributors
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Professor in Biomedical Sciences, University of Manchester
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Professor of Immunology and Pro Vice-Chancellor, Research Partnerships, Victoria University
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Senior Lecturer; MD, Victoria University
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Professor of Immunology, RMIT University
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Postdoctoral research scientist, Columbia University
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Professor of Virology & Infectious Diseases, University of Liverpool
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Professor of Immunopharmacology, Queen Mary University of London
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Lecturer in Biomedical Science (Cancer biology), University of East London
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Professor of Immunology, University of Connecticut
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Consultant Neonatologist, University of Birmingham
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Laboratory Head, Walter and Eliza Hall Institute
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Reader in Neurology and Neuroepidemiology, Queen Mary University of London
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Associate Professor of Microbiology, Immunology & Pathology, Colorado State University
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Research Fellow, Institute for Molecular Bioscience, The University of Queensland
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Vice-Chancellor's Research Fellow, School of Health and Biomedical Sciences, RMIT University
