Flu cases and hospitalizations are surging, already breaking last season's records. Here's where activity is highest, what ...

Respiratory viruses are usually most active from October through March, health officials say.

Like the flu and COVID, the symptoms of a cold are often coughing, a sore throat, tiredness and sometimes a fever. However, ...

Long COVID affects an estimated 65 million people worldwide and can damage the brain, heart, blood vessels, and immune system long after infection. Researchers now link symptoms to lingering virus, ...

A new flu variant fueling a fast-paced rise in cases across the state has brought with it some symptoms unlike those many have come to associate with the virus.

Discover how UCSF is leading the charge in Long COVID research, uncovering key findings that advance our understanding of the condition. UCSF researchers have adapted innovative tools and ...

When the coronavirus outbreak began, the Centers for Disease Control and Prevention listed cough, shortness of breath and fever as possible symptoms for the newly-discovered virus. Now, the ...

Some people who get sick with COVID-19 don't feel any symptoms of the disease, but what does an asymptomatic COVID-19 ...

Can you catch COVID on top of COVID? A doctor explains why it is, unfortunately, a possible scenario and what you can do to ...

In a new study, researchers report that even those who improve continue to see ups and downs that impact their quality of ...