Differing strains of the coronavirus continue to appear around the world and a new COVID-19 variant, the so-called "Delta" variant, has health experts concerned. The variant, otherwise known as B.1617 ...

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, delivering a ...

The timing of symptom onset depends on lots of factors, including the amount of virus to which someone was exposed, Hotez says. Their level of pre-existing immunity may also affect the likelihood or ...

Add Yahoo as a preferred source to see more of our stories on Google. "When COVID first appeared, we saw the lower respiratory tract manifestation, that is pneumonia. We don't see that anymore," Dr.

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

(NEXSTAR) – It’s that time of year again. The coughing, sneezing and sniffling is all around us, as both influenza and COVID-19 start to spread. When you start to feel sick, it can be hard to tell ...

More than half of the U.S. population has received at least one dose of the coronavirus vaccine. But based on a new scenario model by Johns Hopkins the next three months are crucial if we want to ...

Even a mild case of COVID-19 or the flu can impact the body long after the fever and cough fade, according to new Tulane University research that may help explain why some people struggle to feel ...

Add Yahoo as a preferred source to see more of our stories on Google. What are the most common COVID-19 symptoms doctors are seeing in October 2025? Read on to find out what to look out for, how to ...