It's not easy to tell these health conditions apart based on their symptoms alone. Find out about the differences between these illnesses.

Add Yahoo as a preferred source to see more of our stories on Google. Sneezing? Feeling congested? Coughing? Are these signs of flu season, a cold or allergies, or are they symptoms of COVID-19? What ...

Do you have a sore throat, a runny nose and muscle aches? It could be a common cold, a case of the flu -- or COVID-19. The illnesses all share similar symptoms, sometimes making it hard to distinguish ...

What used to be a predictable “cold and flu season” has evolved into a formidable “triple threat” of the flu, RSV, and COVID-19—and now, the highly contagious norovirus is joining the headlines. For ...

The spread of coronavirus in the U.S. has plenty of people worried. But, as freaky as it is to to hear words like "pandemic" thrown around, the data shows that most people who contract the virus have ...

The common cold and COVID-19 are viral illnesses with similar symptoms. Colds are upper respiratory infections that may cause mild symptoms like sneezing, nasal congestion, sore throat, and a low ...

With measles outbreaks, flu spikes, and COVID as a seasonal threat, learn key differences between these contagious diseases, symptoms, vaccine advice.

The novel coronavirus that causes COVID-19 has spread globally, killing hundreds of thousands of people and infecting millions more. The pandemic has upended life around the world, crippling the ...

With flu rates skyrocketing across the United States and elsewhere, you might be wondering if your sniffles are the flu or whether it’s something else. It can be hard to know, without testing, what is ...