Speech-generated droplets and COVID-19 transmission

Children and adolescents were twice as likely to experience long Covid after contracting Covid for the second time, compared to their peers with a single previous infection.

The results show that childhood cancer survivors had a lower risk of contracting COVID 19, but were 58 per cent more likely to develop severe disease if they did become infected.

Gut bacteria are considered to be a key factor in many health-related issues. However, the number and variety of them are vast, as are the ways in which they interact with the body's chemistry and each other.

Using a newly devised, three-dimensional model to study the regeneration of nerve tissue in the nose, researchers at Tufts University School of Medicine and the Graduate School of Biomedical Sciences (GSBS) and colleagues have discovered that one type of stem cell thought to be dormant may play a more significant role in preserving the sense of smell than originally believed.

A new type of mRNA vaccine is more scalable and adaptable to continuously evolving viruses such as SARS-CoV-2 and H5N1, according to a study by researchers at the University of Pittsburgh School of Public Health and the Pennsylvania State University.

People's immune systems deteriorate as they age, making cancer therapies that rely on immune cells difficult to implement. In a new study, researchers from the University of Lausanne (UNIL), the Lausanne University Hospital (CHUV), the Geneva University Hospitals (HUG), and the Ecole Polytechnique Federale de Lausanne (EPFL) show that age-related immune decline has a measurable impact on CAR-T cell therapy, one of the most advanced forms of cancer immunotherapy.

People with excess weight are more likely to experience long-term neurological and mental health symptoms after Covid-19, including headache, vertigo, smell and taste disorders, sleep disturbance, and depression.

An international team of scientists led by the University of Bath studied evolutionary differences between mammal species and found that those with bigger brains and longer lifespans tend to invest more heavily in immune-related genes.

Antidepressants, such as Prozac, are routinely used to treat mental health issues, but recent research reveals they may also protect against major infections and life-threatening sepsis. Scientists at the Salk Institute have now discovered how medications regulate the immune system and protect against infectious disease, providing insights that could lead to a new generation of life-saving treatments and improve global readiness for future pandemics.

A Covid-19 diagnosis is no longer as frightening as it used to be, thanks to developments in treatment choices. However, a new study reveals that leukocyte (white blood cell) count may now be used to identify who is more likely to develop more significant disease symptoms.