The winter flu season features two types of influenza. Here's what you need to know about them and how they differ.

Data from the Centers for Disease Control and Prevention shows seasonal flu activity continues to increase across the country ...

While we often refer to it as "the flu," the influenza virus has several strains. Here's what to know about the two most ...

The flu can also cause a general feeling of fatigue or malaise, Ray says, as well as gastrointestinal issues like diarrhea ...

A new study says the flu A viral strain can adapt shape to stay infectious. Infectious disease doctors break down what this ...

Flu A and flu B are two different strains of influenza, explains Thomas Russo, M.D., professor and chief of infectious ...

Influenza, commonly known as the flu, is a contagious respiratory illness caused by influenza viruses. It can range from mild ...

Each year, flu experts from around the world gather to map out recommendations for next winter's flu vaccine. This year, it's ...

Flu deaths have surpassed COVID-19 in California for the first time since the pandemic, with concerns over low vaccination rates and a likely severe flu season.

While we often refer to it as "the flu," the influenza virus has several strains, with flu A and flu B considered the most ...

But not all influenza is the same. There are some notable differences between flu A and flu B strains. On the heels of a post-holiday COVID-19 surge, flu cases and hospitalizations are ticking ...