To most people on the planet, the Covid-19 pandemic is over. But for many scientists who have been tracking the largest global infectious disease event in the era of molecular biology, there is still ...

In a new JAMA study, researchers found that people who had healthy sleep patterns prior to a Covid infection — both before and after the Covid-19 pandemic began — may have a lower risk of suffering ...

Editor's note: Find the latest COVID-19 news and guidance in Medscape's Coronavirus Resource Center. The study covered in this summary was published on BioRxiv.org as a preprint and has not yet been ...

In the depths of the Covid-19 pandemic, something strange happened: For a year or two, illnesses that used to emerge like clockwork when fall and winter arrived — flu, RSV, and the myriad viruses that ...

In-depth analysis uncovers north-south oscillations in COVID-19 cases, revealing how regional waves shape the pandemic across the U.S. and providing key insights for future health interventions. Study ...

Patients with COVID-19 can show several different antiviral immune response patterns, which may influence how the disease ...

Long COVID has challenged clinicians since the early months of the pandemic. Fatigue, cognitive issues, and post-exertional symptom flare-ups are now well-recognized, but why people recover at ...

Doctors say they're finding it increasingly difficult to distinguish Covid from allergies or the common cold, even as hospitalizations tick up. The illness' past hallmarks, such as a dry cough or the ...

Two health care workers get COVID-19 vaccinations on the same day. Both show strong antibody responses initially, but six months later one stays healthy while the other contracts the virus. A new ...