How long are you contagious with the flu? Experts say you can spread the virus for five to seven days after symptoms start, ...
A surprising flu experiment shows that good airflow and fewer coughs can stop the virus from spreading, even up close.
A group of volunteers spent days locked in a small hotel room with people actively infected with flu. They played games, ...
By Hugo Francisco de Souza A rare human challenge-style trial shows that even with poor ventilation and prolonged exposure, ...
As North Carolina illness rates spike post-holidays, here's what to know about the spread of flu, stomach flu and COVID-19.
Cases across the country had appeared to decline before new public health data showed upticks in infections.