It's summer, and RSV and flu have come and gone. But, as ever, COVID-19 is different. Even though the pandemic may be behind us, the virus is once again surging in the U.S. Here's what to know about ...

The COVID-19 virus can persist in the blood and tissue of patients for more than a year after the acute phase of the illness has ended, according to new research from UC San Francisco that offers ...

Ziyad Al-Aly is chief of research and development at VA St. Louis Health Care System and a clinical epidemiologist at Washington University in St. Louis. Since 2020, the condition known as long ...

The Covid-19 pandemic has been perceived mainly as a dangerous acute outbreak of infection that killed more than a million people in the United States and 7 million worldwide. 1,2 However, in the ...

COVID-19 vaccines saved lives, did not cause 17 million deaths If Your Time is short The 17 million figure comes from research that experts have said is flawed because it counts excess deaths during ...

A sweeping new definition of long COVID could help affected people get recognition of their condition and improve diagnosis and treatment. The U.S. National Academies of Sciences, Engineering and ...

Ziyad Al-Aly is chief of research and development at VA St. Louis Health Care System and a clinical epidemiologist at Washington University in St. Louis. From the very early days of the pandemic, ...

Yearly Covid-19 Booster Recommendations in Canada, Europe, and Australia. Although the rapid development of multiple Covid-19 vaccines in 2020 represents a major scientific, medical, and regulatory ...

The most common respiratory viruses that cause flu, colds, and RSV tend to cluster in the fall and winter months. Though that means months of elevated risk for sickness, "cold and flu season" is a ...

With cases of COVID-19 on the rise again this winter thanks in part to the new JN.1 variant of the virus, now is probably a good time to take stock of the tests you may have at home. According to data ...

COVID rebound is when COVID-19 symptoms return soon after they go away or a person registers a positive COVID-19 test result after testing negative for several days. COVID rebound can happen in people ...